Thursday, November 7, 2019

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Light and Nature - a valuable element for humans


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In the last thirty years, a small movement has developed that praises nature, which has a very positive impact on human beings. Of course, all of this makes sense, but the western medical world has not yet weighed enough on the issue. Currently, most researchers are preparing to produce relevant documents on regenerative benefits. Nevertheless, not enough steps have been taken to establish the relationship between light, nature and human interaction. However, for me, it is reason enough to rejoice that there will be efforts in this direction in the future.

Sun dawning. With every birth, I see a new light of hope for lighting design. As lighting designers, we are better off than ever before in opening the path to human health, creating credibility and presenting research results. Since the eighties, a small group of experts have been studying health questions and how nature relates to human needs. Now we use the term “biophilia için for this. Science gradually began to address this issue. This article aims to provide information about biophilia and discuss the validity of biophilia. The applications mentioned in the article will be interesting and add information not only for my own business area but for everyone. Whether you work indoors or outdoors, the important thing is that the light that is designed in a space has an effect on human emotion.

Nature offers us great experiences to learn from. Our vision is a blessing in itself. This allows us to understand the simple differences in light in natural environments. There is no good teacher except sun and nature. Otherwise, where would we get such information or experiences so effectively? We can only see, experience what we perceive optically. The ability to understand emotions is a great gift for life. We never forget emotions, and we can actually benefit from it. By providing unforgettable experiences, our work gains validity, fairness and value.

Light is an impressive tool that connects us emotionally. It has natural and positive effects. Gives warmth, comfort, safety and energy. It is important how and why we illuminate a space. And that's where we can put all our skills.

Light as a support for treatment
Unfortunately, the scientific community does not yet have research results that will gain weight in light and the therapeutic elements of nature. As mentioned earlier, this is an exciting chance for all of us. Since we all need to relax and rest after our daily stressful environments, I can imagine creating extraordinary opportunities for hospitals, spas, working environments, public parks, residences and similar places. We are obliged to provide all these comfort and conditions to support the treatment processes.

If we take into consideration the dark hours of the day and our night environments, relaxing lighting designs can be applied in these areas, which will have an impact against possible negative emotions. Think about it: You are a nurse and you are faced with pain, illness and death every day. Such a situation is naturally an excessive burden on one's thoughts about life, psychological health or condition. So it doesn't make sense to give short breathing intervals on a regular basis and to be in other, more relaxed and calm environments? I admit, not everyone works under these conditions. However, many of us are experiencing stress in meetings, dates for completion of the work and meeting the demands of building owners and are also physically and psychologically affected.

In terms of people-oriented lighting design, we spend 90% of our time indoors. 87% of the information we perceive occurs through our eyes. 50% of human brain activity is about vision. Such values ​​determine how our visual perception is fundamentally how we live and work. If this is the case, we can start with the idea that visual stimuli have an impact on our health. Light affects us in two ways: visual (our visual performance and visual experience) and non-visual (endocrine system and circadian rhythm).

Inadequate light conditions due to poorly designed light and daylight were often given as the main causes of health problems at different times of the day. These problems include stress, loss of memory and concentration, weakening of the immune system, wrong medication use, cardiovascular diseases, hyperactivity, depression and insomnia. Some of these health disorders may also be caused by excessive light at night: use of computers, smartphones or poor indoor lighting. In addition, color and colored light can have profound effects on the physical, mental and mental health of a person.

Relevant information on the subject
I often ask myself when or by whom the beauty of light in nature is the first time. By Adam and Eve in the garden of paradise? Or by a Neanderthals or Denisova people who watch the light of nature in the light of an open flame? In the last decade of the 20th century, some people began to work on light and nature. There are several key people who have contributed to these developments.

Landscape lighting designer Frank B. Nightingale (1885-1965) was the first to develop landscape lighting as a specialty. He published two books on this topic: Lighting Garden Lighting ”(1958) and as Light as an Art 19 (1962), and since he was also a magician: for Magic for Magicians” (1964).

For the first time, he was the one who worked on bringing nature and lighting together, as he intended to consciously design the external environment. In addition, he developed many lamps that mimic plants and are specifically designed to adapt to the natural environment. Frank B. Nightingale was known as the person who portrayed the landscaped landscapes and the light as art and, in doing so, combined the lighted scenes with which he was choreographed with music. During a demonstration, it was determined when the lighting would be switched on and off.

In terms of creating a perception that nature has benefits for human health, the following people have become pioneers:

≥ Dr. Robert S. Ulrich - Director of the Department of Architecture, Health Systems and Design Center, University of Texas A&M and Head of the Architecture Department of Health Care at TU Chalmeers in Sweden (the most cited in the international community among evidences in the field of health). Published by: „ViewThrough a Window“ (1984); Urban Scenes “(1981).

≥ Rachel and Stephen Kaplan: Her specialties are Environmental Psychology, Professor of Psychology at the University of Michigan. Both are known for their research on the effects of nature on human relationships and health. Their published works include „The Experience of Nature 1989 (1989),„ With People in Mind “(1998); „Restorative Environments“
(1988).

Edward Osborne Wilson (E.O. Wilson) (retired honorary research professor at Harvard University) describes his theory of the advantages of nature over human health in his 1986 book, "Biophilia."

≥ Edwin D. Babbitt (1828-1905) is considered a pioneer in the field of chemotherapy with his book “Principles of Light and Color” (1878), which describes the therapeutic use of colored light.

≥ Clare Cooper-Marcus (Professor of Architecture and Landscape Architecture at the University of California, Berkeley) and Marni Barnes (Psychotherapist and Landscape Architect at the Academy of Arts, University of San Francisco) co-authored “Healing Gardens” (1999). The book explains how gardens can cure the soul and body.

≥ Dr. Maja Petric specializes in how people perceive spaces and perceive them emotionally. It is a worldwide pioneer in this field. Her research focuses on the complementary potential of light and art to create transformable experiences in man. Her published works on this subject are „Light, Art and Biophilia“ (2016) and History The History of Light in Art “(2017).

My own experiences
I have been working on landscape lighting design since 1999. I learned a lot about this and I was able to work on unique projects. With the help of existing plant material, structures and garden art, I created illuminated emotional spaces. It is very important for me to have a positive effect on the psychology of man. I aim to give a message with every garden I design. The person watching such a garden should leave him / her to experience and feel the inspiration, magic, magic or respect or calmness, retreat, comfort or relaxation. While most customers demand environments that bring joy and fun, some decide for mysterious, exciting or spooky environments. The advantage of being a lighting designer is here: We have the capacity to apply light to create the desired effect. It's good to know that the customer really appreciates my work. One of my clients stated that sitting on his balcony after coming from work and looking at his quiet garden made him feel very comfortable. When I see deer grazing in my meadow, I find peace and I feel comfortable. ”Take a moment to stop what you're doing and think of these images and think about how you feel.

The first time a female client saw her lit garden, she started to cry. I'm very impressed. Fortunately, all these feelings of floods had been at the beginning of my career. Thus, I was motivated to perform my profession more passionately. All these examples show that when we combine light and nature with human interaction, something deeply happens.

I understood that it was very simple to see this profession as a technical job. It's all about a process. The tool for the purpose, not a tool to get the job bir a tool to perform the application… And then, late to the next project. We should always ask ourselves: “Why?” Why do we do what we define? In fact, what we need to do is not to “improve yaş our lives? Does our actions have something to do with feeling comfortable and psychological effects? We must agree on a strategy and a main objective consistent with a common message within the lighting design community and assess what our ultimate goal is.


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Virtual Reality research by Zumtobel: The effect of light on psychology in city buildings


Whether we are in the Grand Canyon or in a crowded city center, our environment has a significant impact on our thoughts, emotions and psychological reactions. From there, Colin Ellard, Neuroscientist and Director of the University of Waterloo Urban Facts Laboratory, named his most recent book “Places of the Heart Ever.

Inspired by Ellard's experience, Zumtobel tested the future-oriented virtual reality method for psychological light application research in the outer space. To this end, the company's products in the new outdoor luminaire portfolio have been integrated into the Ludwig square in the center of Darmstadt, Germany. The validity of this experiential attempt has been proved. According to the data obtained, human beings can be psychologically supported at night by light and design compositions.

The dynamism, intensity, distribution and color of the light affect our emotions and behavior in every aspect of life. Therefore, lighting design in the city requires interdisciplinary studies, especially considering the factors that will affect psychologically. From the German Geological Research Center in Potsdam Christopher Kyba criticizes the way many science disciplines work on their own and demands the introduction of a “Night Institute“.

Introducing its new outdoor product portfolio, Zumtobel always follows a single goal through Human Scale Lighting: The measure of lighting is human! At night, with the help of light creates a filter effect that people perceive their environment. This filter moves between the individual and the reality of the night. However, lighting design for the night is often made according to technical possibilities or economic considerations. On the one hand, scenarios are based on the theory that olursa the more the better,, and on the other side, there are increasing ideas of creating lighting that will prevent light pollution. In both groups, it leads to lighting solutions that alienate the environment in urban areas and cannot find the balance between nature and human. Such light solutions are far from our needs, interaction and expectations. The history, social relationship and identity of the place to be illuminated are also ignored.

Light and other design parameters affect emotions. Emotions affect the quality or duration of being in the urban environment. Based on these assumptions, Zumtobel made observations according to the objectives of “Human Scale Lighting ve and investigated the effect of light on people's emotions at the virtual Ludwig square in Darmstadt. Psychological factors were based on the opposite pair of adjectives (Semantic Difference).

The idea of ​​research on the display of light in the urban outdoor area

Dr. Zumtobel is an expert in the field of light simulations for the idea and implementation of the research study. He convinced Roland Greule (Lichtplanungsburo Greule, Hamburg / Germany). Greule's Media Technique, HAW Hamburg, DMI Faculty also set up the screening. He also took charge of the experiment. Other areas of expertise for the project were the support of a Master's Psychologist, Torsten Braun's lighting design office and lighting designers from Limburg, Germany.

An element of the design of urban structures is the orientation and order associated with selectivity in perception and the formation of a hierarchy of perception. According to Kevin Lynch, the city planner, he creates five images of a city: roads, borders, focal points, icons and spaces. Pedestrian zones or central locations are important for cognitive perceived maps of a city. For this reason, Ludwigs Square was chosen in Darmstadt for psychological studies on perception of 21 subjects. Professor from the Technical University After a study with Annett-Maud Joppien, it was decided to take this part of the city. As part of a workshop, the professor's graduate students in architecture, construction and design developed night light scenarios under the direction of experts and created footage related to the field via Photoshop software. The mentioned procedures were the first step in VR images in the research. The review was aimed at the following goal:

1. Outdoor light research at night, in particular the accuracy of the Virtual Reality Method to understand the effect of light on human psychology.

2. Planning recommendations for lighting design and examination of other architectural influences in central urban areas: In addition to light intensity planning for perception and emotional support, measures for urban construction such as integration of urban furniture were also considered. In addition, the new Zumtobel luminaire family “Supersystem outdoor” and “Nightsight” products have been evaluated for the effect of luminaire design and light distribution.

3. Two-stage research imaging: In the first part of the research, two-dimensional projections with different quality categories were compared (Photoshop, Relux Suite and Unity 3D). It was seen that more laborious visualizations gave more qualified evaluation.

In the immediate follow-up of the main experiment, the Oculus Rift goggles were used to determine the psychological values ​​of the nine light scenes with up to three perspectives. Free movement of persons was not possible in this installation.

Bringing abstract values ​​to measurable values ​​for psychological light and perception assessment

In the stage of making light scenes measurable through VR (Virtual Reality), Lam and Flynn's psychological light evaluation results were taken as a basis. Lam described the criteria for a psychologically successful lighting design to meet human needs. For example, spatial or temporal orientation criterion, consistency, focus on specific activities, connection with daylight. Added some complementary thoughts to the outside area. He stated that criteria such as safe acting, orientation, security, pleasure, rest and warning would support the selection of environmental information. In the light of day, the environment is perceived very easily, especially if the detection process is included in the design concept. On the other hand, lack of information occurs at night due to physical, ecological and financial constraints. Therefore, according to Lam, the main task of artificial light at night is to reinforce valid information and to cover invalid information. At this stage, luminance planning is achieved by fine-tuning a foreground and background. According to Lam's results, façades, ie backgrounds, should be reasonably illuminated according to basic needs such as safe road lighting. On the other hand, the architectural elements on the front are important for a city to show itself. Therefore, for example, the central points or special meeting points for orientation must be appropriately highlighted.

Lighting designers often refer to a “classic ındaki in the 70s of the last century in psychological indicators of the effect of light. Professor of Kent State University. John Flynn argued that psychological methodology should be studied interdisciplinary. For example, he used Semantic Differential related to multidimensional scaling. Flynn's research ideas on assessing the effect of light show her expertise in light and psychology. After a factor analysis, the results of the psychological effects of light can be interpreted in three areas: u Evaluative Impressions / Pleasantness örneğin (eg relaxing / disturbing, beautiful / ugly, interesting / monotonous), “Perceptual Clarity” (eg light / dark, clear / and "Spaciousness" (for example, large / small, large / narrow).

The Bartlett School of Architecture later re-evaluated the results of a research group from University College London. However, Hawkes evaluated only two independent dimensions, which he called brightness and interest (nonconformity).
Canadian light researcher Jennifer Veitch still appreciates Flynn's creative work, which is an integral part of the IESNA Lighting Handbook. However, it also points to the methodical shortcomings of his research.

The psychological effect of light in the virtual outdoor space was measured by deriving from the results shown for the Zumtobel research. A reliability analysis proved that the scheme of bringing these abstract values ​​into measurable values ​​is a reliable basis for the establishment of future VR research. However, the resuscitation was incomplete. This deficiency coincides with the expression of subjects who often use words that contradict their sedative / revitalizing qualities in nighttime perception assessment. The subjects point out that both adjectives can find positive responses and do not form extremes. In research, the resuscitation indicator can be detected from time to time by a controllable study and a significantly reliable neuro-psychological measurement method. This is reflected in recent research initiatives on the effect of light.

Evaluation of light scenes through virtual reality (VR)

Six different light scenes were used for the virtual reality master experiment. For reference, Zumtobel's ers Supersystem outdoor ”luminaire product line and other light building blocks were used. A holistic composition was formed. The composition included illuminated fountains, trees and cubes as seating furniture, as well as a low level of facade lighting in the reference case. In all subsequent test scenes, a component was changed according to the reference state. For example, seating cubes were not illuminated or the facade was made brighter. An alternative product from the “Supersystem outdoor” or “Nightsight” luminaire family was used for basic lighting. The lighting design on the images remained in the background. Therefore, there were no significant differences in the assessment of the height of the luminaire or comparative luminaire for light scenes or the appearance of the luminaire product group.

Results of category types for psychological perception assessment

- Luminous Size
The problems of the sedative / stimulating factor pair have been mentioned previously. The bright reality virtual reality scene, as expected from a reference scene, has a significantly more refreshing effect. In addition, the staging of cubes, trees and fountains has a revitalizing effect. These design elements have the role of stage builder and building builder in the context of urban buildings at night as well as at night. Urban outdoor lighting design focuses mainly on lighting power / luminous intensity and equal illumination of horizontal surfaces. However, nightly perceived staging components need to be added to evaluate the brightness of an entire image. According to the experience gained from this research, urban environments can be considered as well-lit only when a design idea that covers a wide range of components is applied. In general, if the composition is enriched with a small spot of light, such as the statue of Bismarck in the fountain in our example, the squares receive a better assessment. This also applies to the illumination of building facades. In fact, the scene seen, the perceptible components of urban design, or the orientation or configuration (sitting cubes, trees, fountain) give a more matte appearance.

- Interesting degree size
A holistic composition of light creates an intimate effect and provides an advantage for emotional impact in almost all elements. In addition, an even distribution of light intensity creates a positive effect by placing it on the ground relative to the light / dark areas applied horizontally. When the additional components (sitting cubes, fountains, trees) that make up the image are not opened to perception, an uncomfortable atmosphere is created.

An unrealized tree and a virtual reality scene without an orientation point (fountain) in the center are considered ugly or negative.

An integrated image with light, a VR scene that creates a reference scene and emphasizes the figure in the fountain with light, has an immediate positive effect. There is no significant difference in the assessment of the degree of innovation. In the ranking of all the reviews, Bismarck's face, shown in an extraordinarily beautiful light, goes up in the ranking.

Scenes with illuminated sculptures and the idea of ​​a holistic lighting design were considered relaxing. However, the high radiation intensity on the building facades has a negative effect. This test scene was evaluated as uncomfortable. In contrast, bright vertical areas were necessary for the “order” indication. They gave information that the environment was designed. The designed / un-designed expression pair provides indirect information about direction in the urban environment. The illumination of the whole Bismarck statue was perceived as a well-designed environment.

When the fountain disappears in the dark, there is a tendency to think that the environment is not designed (last row). The stage with the dimmed seating cubes also creates an undesirable feeling.
A well-structured environment does not require high radiation intensity differences on the roads. The “Supersystem outdoor” luminaire family of the company was an important part of this research. The product meets various design requirements very well, because the up and down tubes allow flexible distribution of light on other staging components, as well as horizontal and vertical areas. In this way, the sensing process starts and the environment is enhanced by contrasts. Important orientation points, such as the monument, can be highlighted by the innovative family of luminaires and precise light guidance, which allows for the desired intensity of radiation or detection planning.

Results and Forecasting

The VR study showed that a holistic light composition, which brought a wide range of perception effects, positively contributed to the formation of emotions related to a square and thus promoted the quality of presence and direction in the urban environment. Another finding showed that psychological constructs used for perception assessment in urban environment through VR were working reliably. In interdisciplinary studies with city planners, a future-oriented city can be researched. For the sense of identity, direction and security, the addition of seating furniture to the city's night view, the integration of trees and the illumination of icons are very important. Based on these results, city planners are investigating whether human-like sculptures in the public sphere affect emotions and behaviors during the night-time process. Such stone figures can be perceived as a guard or a sculpture can reduce the sense of loneliness.

The answer to this kind of question was obtained from a research on virtual reality scenes with a combination of psychological evaluation. It is possible to plan the quality of a square through the VR and thus determine in advance. In the study, subjects immediately perceived light quality and good light technique. Simple light design ideas gave bad psychological values. Visible and important areas and objects need to remain detectable in the dark. This aims to preserve the identity of the place. Environmental psychologists are talking about a setting here. The subject here is the objective assessment of the mobile person, their physical environment and the personal assessment of their actions in a particular environment.

Use of Virtual Reality research in light and perception research

The advantage of virtual reality research over a field survey is that it can be performed immediately and can be set up effectively. In addition, interfering variables such as weather, temperature, crowd of people or length of day can be eliminated. The statements obtained through this virtual reality research invite other uses of architecture to reflect. For example creating real and virtual light showrooms. Pattern creation can be reduced with Virtual Reality (VR). Now, every sector presents three-dimensional images of their new products in a VR room. The virtual room is an exciting area in the future that can show how the environment affects emotions, especially in the context of architectural psychology, and how to improve human experiences and behavior. New technology and measurement methods offer the chance to improve people's quality of life with the impact of nature and successful optimization of the structured environment. With VR and other imaging software, the common language of different disciplines becomes easier. This is the only way to create a ’Places of the Heart Coll (Collin Ellard) light from Lux or Lumen.


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Psychological Effects of Color and Light Investigated


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Mugla Sıtkı Koçman University Faculty of Technology Department of Woodworking Industrial Engineering Assoc.Prof.

Mugla Sıtkı Koçman University Faculty of Technology Department of Woodworking Industrial Engineering Assoc. Dr. Within the scope of scientific research projects conducted by Ali Kasal, "Psychological and Physiological Effects of Living Spaces Organized by Different Color and Light Combinations on Human" were investigated.

Asserting that very different atmospheres can be created thanks to elements such as colors, shapes, textures and lighting in interior arrangements and furniture design Assoc. Dr. Ali Kasal, "It is known that each of the designed atmosphere and furniture has different psychological effects on people who take action in that living space. This situation clearly shows that there are many design elements in the hands of the designers who design interiors and furniture that can change the atmospheres and visual perception of the interiors." said.

In this study, it is aimed to determine the psychological effects and physiological changes created by the atmospheres created in the living spaces designed with different color and light combinations, and the physiological changes that occur in the people who will perform the action in that place, "By investigating only the psychological and physiological effects of color and light combinations within the scope of the study, In order to determine psychological and physiological changes, real living spaces and fittings were designed by designing 1/1 scale, 4 different living spaces, 2 different color combinations (warm colors, cold colors) and Lighting was made with 2 different light source colors (white light, yellow light). 0 subjects were allowed to spend a certain time one by one, and the heart rates (pulse) and blood pressure (blood pressure) values ​​of the subjects were measured separately in each place. In the light of these values, the psychological responses of the subjects according to their places were interpreted. In addition, in order to determine psychological effects, a questionnaire was used to measure the emotions evoked by living spaces in the subjects by using perceptual measurement method. The results of the survey were evaluated statistically and the emotions and degrees of the people were determined according to the places. Subjects were also subjected to two tests, one for general anxiety and the other for instant anxiety in psychiatry. Thus, the levels of anxiety caused by the spaces arranged with different color and light combinations were determined. "

LADIES ARE MORE SENSITIVE TO COLOR AND LIGHT FOR MEN

As a result of the study, warm color combination of living spaces arranged temperature, regularity, vitality, energy and positive emotions such as dominant, positivity, revitalization and attractiveness, such as feelings that are felt distinctly Assoc. Dr. Kasal, "the living spaces arranged in cold colors, the sense of coldness is dominant, and hardness sense is felt clearly. According to the results of anxiety (distress), women feel themselves the most comfortable space, arranged with warm colors and illuminated with white light source, the most distressed In the general sense, white light increased instantaneous anxiety values ​​by 4% and yellow light increased by 14%. In gentlemen, space color combination and light source color did not affect anxiety values, gentlemen were affected by light source color rather than color combination, and momentary anxiety levels were compared to white light in yellow light. Another result is that women are much more sensitive than gentlemen in terms of being affected by colors and light (sensitivity to visual environment). "


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Interesting effects of colors on people


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Did you know that colors greatly affect people's soul? To give an example of this, people often feel unhappy in closed and black weather, but they feel happier on sunny and light days. Colors have many effects on a person similar to this.

Navy blue
Interesting effects of colors on humans Dark blue is the color of success and power. Many famous business men wear navy blue clothes to look charismatic and strong, and many famous logos use navy blue to attract attention. Those who do not want to attract much attention in the environment they enter generally prefer navy blue. Dark blue also affects people's easy decision making and enhances memory. According to research people in pajamas dark blue, wakes up from sleep better remember their dreams. Navy blue is also preferred for the treatment of people with psychological disorders.

Orange
Interesting effects of colors on humansIt is a bright color and often represents vividness. This is why orange is preferred in prisons abroad. It's a color that moves people. It is also good for people with rheumatism for therapeutic purposes. The orange color is recommended for use in children's rooms or bedrooms. It is not correct to use in libraries or lecture rooms.

Pink
Interesting effects of colors on people The pink color represents happiness and joy. It is preferred in psychological treatment centers because it is thought to calm people. Also known as the color of love. An environment decorated with pink decors allows one to calm down and sleep more peacefully.
Brown
Interesting effects of colors on people Brown is a symbol of friendship and sincerity. People wearing brown do not attract attention in society, but give people a great sense of comfort. Browning is another important feature.
Purple
Interesting effects of colors on peopleIf you are interested in art and expect inspiration, immerse yourself in a room where purple colors predominate. Purple is the color of luxury and nobility. It affects people's concentration positively and gives direction in this direction. Dark purple hues are a bit more negative. Many suicides love their dark purple hues.

Yellow
Interesting effects of colors on people Chirping is a color that gives peace to people. It adds vitality to the people and also outweighs the inspiration. Affects mind activities positively.
White
Interesting effects of colors on humans As we all know, white is representative of purity and cleanliness. White color is preferred in hospitals, pharmacies and toilets because it represents cleanliness. White has a shade that opens up the inside of the human being.
blue
Interesting effects of colors on people People who love blue are often successful and self-confident. We will be happy to see a clear blue sky when we go out. Especially light blue has a positive effect on human beings.
Green
Interesting effects of colors on peopleGreen is a color that represents commitment to life. It takes this feature from the green tones of nature. It represents hope, innovation and beauty.
Red
Interesting effects of colors on humans Red, known as the color of passion and romance, also has important health implications. Accelerates blood flow and stimulates appetite. Usually in places where red is intense, people don't understand how time passes. This is why it is often preferred in bar-style places.


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What are the effects of lighting on human health?


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Misuse of light invites many health problems from cardiovascular diseases to diabetes, from cancer to hormone disorders…

He is one of the founders of ZEVE Lighting Design Studio, which has won many international awards for architectural lighting projects and has also designed the lighting design of the Presidential Complex. Fikret Talu emphasized that faulty approaches in indoor and outdoor lighting negatively affect human psychology and physiology.

He has been the founder partner of the Design Studio where he has been conducting research and practice on the physical and psychological effects of lighting on human health and the social impacts of urban living spaces. Fikret Talu says that lighting that is not applied correctly in indoor and outdoor environments disturbs the human body's biological clock due to negative effects such as excessive light exposure and wrong color choices.

The deterioration of the biological clock can lead to many health problems from cardiovascular diseases to diabetes, from poor sleep performance to poor performance, especially from increased risk to certain types of cancer.

Araştır Research has revealed that our eyes are not only gates to the world, but also our sensory organs that are closely related to our psychology and physiology, and that affect it in depth ”. Fikret Talu adds:

Dışında In addition to photoreceptors that provide vision in our eyes, new photoreceptors (ipRGC) have been identified that affect the circadian rhythm, neuroendocrine and neurobehavioral systems of the body, called light-sensitive retinal ganglion cells. Together with these studies, the effects of illumination on human psychology and physiology have been proved. In other words, indoor and outdoor lighting directly affects our physical and mental health. ”

“New generation lighting should be people-oriented…”

As with all living things on Earth, almost all physiological and behavioral parameters have a certain order in humans. The synchronization between the surrounding light and the biological clock is crucial to the effective and convenient functions of the body.

If the circadian rhythm is disturbed, many disorders may occur, such as impaired sleep patterns, poor performance, cardiovascular diseases, diabetes, changes in hormone levels, changes in body temperature, blood pressure and increased risk to certain types of cancer.

Stating that we experienced not only the lighting we use in our homes and offices, but also the outdoor lighting used in contemporary and historical architectural buildings, Fikret Talu emphasizes that all these developments lead to the concept of “people-oriented lighting::

“Human-oriented lighting explains the link between health and comfort and meets the visual and emotional needs while balancing the physiological needs of users in accordance with the circadian rhythm. That's why we, as Zeve, carry out all our lighting projects with the principle of human-oriented lighting. ”

“This makes it increasingly complicated to design a good lighting environment, but it also puts us at the center of lighting design, Dr. said Dr. Larsen. Fikret Talu continues his statements with the following words:

“Traditional architectural lighting focuses on visual perception of space / structure, brightness and glare control, color reclaim, safety, light pollution and energy efficiency. However, the invisible effects of illumination, such as biological clock and wakefulness, have different measurement targets. This forces lighting designers to set a different measurement method and target than traditional architectural lighting design. ”

Light and mood are proportional…
Stating that the Lighting Research Center (LRC) at the Rensselaer Polytechnic Institute (LRC) in the United States, which is working to develop measurements and tools for understanding and applying circadian light in real environments for lighting designers, has developed the Circadian Stimulus (CS) measure, which plays an important role in healthy building lighting design Dr. Fikret Talu concludes by emphasizing that CS measurements are graded between 0.1 and 0.7, taking into consideration the light level, color, timing, exposure time and previously exposure to light in the CS definition that should be in the environment:

“When the CS value is greater than 0.3, it is determined that the stimulation of the circadian system is most effective. In studies conducted with Alzheimer's patients, office workers, young people and healthy elderly people, exposure to 0.3 or more CS for one hour in the eye early in the morning is effective in stimulating the circadian system and shows us that light is associated with sleep, behavior and mood. ”


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What are the effects of light on our body?


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A new map was created showing the areas most affected by artificial light pollution. The experts assess the effects of this light on our mental and physical health.
A very comprehensive map called 'World Atlas of Artificial Light Brightness in the Night Sky' was published this month in Science Advances. The satellite atlas of the first atlas in 2001 was not as advanced as it is today. The new atlas therefore contains a much clearer image.

Atlas measures the 'sparkle of artificial sky' that is reflected in the atmosphere from the electric light on earth at night. The glow is caused by light pollution. And what is the extent of this pollution?

Fabio Falchi, an Italian scientist at the head of the Atlas team, says that due to light pollution, one-third of people can no longer see the Milky Way galaxy, and the greatest loss is in industrialized areas. 60% of Europeans and 80% of North Americans cannot see the Milky Way galaxy at night.

But the problem with light pollution is not only about seeing stars, of course. Falchi and his team say that this pollution also affects the environment and public health.

Where is the most intense light pollution?
The satellite performs measurements and travels on poles at an altitude of 800 km from the ground, taking pictures of Earth at night. The location and intensity of the light are determined. These measurements are then converted into maps.

The brighter the sky on the map, the harder it is to see the stars at night. For example, you can see only a few stars in the night sky on Times Square in New York.

Singapur Singapore is the most heavily polluted country. So much so that the eyes of the people here cannot use their ability to adapt to night vision, Fal says Falchi.

In major metropolises in Europe, America and Asia, the level of light on the streets prevents or delays our body from shifting to night-time as it should be.

In developed countries, electric light is widely used and this causes a serious change in the environment.

Light pollution is not only a big city problem. For example, the light emitted from Las Vegas and Los Angeles also affects Death Valley National Park.

Body clock
Like other living things in the world, people have a body clock, and this clock rhythmically regulates sleep and wake patterns, hunger, activity, hormone production, body temperature and many other psychological processes. This clock, which runs every 24 hours, depends on important signals such as daylight and darkness.

The light pollution shown in the atlas is not alone and at a level that directly affects our body clock. This measurement is made by determining the extent to which melatonin is suppressed.

The light pollution measured by the Atlas is based on the reflection of the electric light in the atmosphere. These lights in our homes, workplaces and streets often have a disturbing effect on the body clock.

The shaping of the physiological structure according to the body clock emerged as a result of billions of years of evolution. The introduction of electricity into people's lives has been in question since the end of the 19th century and its spread since the 20th century. So this time is a tiny drop in the ocean in terms of evolution.

Lately, doubts have arisen that disruption of the body clock causes problems such as sleep problems, obesity, diabetes, some cancers and mood disorders! The most important factor is the electric light exposed at night.

Light pollution also causes ecological problems such as migratory birds and the death of marine mammals.

What light?
He is seriously investigating what kind of lights are more harmful to the body clock at what times of day ...

Accordingly, a bright light with high blue content during the day (fluorescent), dim light with low blue content at night is recommended. It is also advisable to stay away from the bright blue screen tablets and smartphones in the evening.

The most important data that will be revealed by these studies will be the application of the least harmful light in street lamps. In Los Angeles and New York, the fact that street lights have been completely transformed into 'white' LED lights is highly criticized. Because this light contains the blue wavelength that is most damaging to human in terms of body clock rhythm and night physiology.


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Indoor Lighting and Effects on Emotions


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Lighting levels have an impact on human performance at many points, including vision, understanding, and mood. Therefore, it cannot be ignored that lighting affects the productivity of employees in a workplace or the learning situation of students in a classroom.

Researcher Alison Jing Xu says that the effect of a bright light on our emotional structure stems from the heat perception of the light and the heat perception stimulates the emotions. According to Alisaon Jing Xu's research, lighting a room affects decision-making and bright light acts as a catalyst for more intense emotions.

Light affects human behavior such as sleep order and mindfulness in a wide range. Research has shown an increase in the performance of students working in natural daylight. Natural light is always a plus; however, it may not always be available in places such as a classroom or business environment.

Natural light should be preferred as much as possible because it affects positively the mood of employees and students.

Due to the fact that we spend most of our time indoors, the amount and quality of light during the day varies according to the work we do. Illumination can affect our overall health and happiness depending on our eye comfort. It is quite common for eye fatigue to occur due to lighting or lack of lighting. Insufficient lighting, glare, flicker etc. situations may cause this. Eye fatigue can lead to general health problems such as headache, restlessness, fatigue and feeling unhealthy.

As in many areas of life, lighting should be in an appropriate balance where people work, spend their time or rest. Achieving the desired distribution of lighting is closely related to the light source and luminaires.

Fluorescent lamps are the most suitable form of lighting for the wide distribution of public areas such as meetings and classrooms. Low-voltage incandescent light sources and LED luminaires are suitable for narrow spaces such as corridors and staircases.

To achieve the right balance, different lighting levels in industrial or academic areas or residential areas need to be assessed by business managers. It should be remembered that a low level of light can cause sleep and an extremely bright light can cause emotional arousal. Therefore, a proper balance should be considered.


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