CHROMA THERAPY LIGHT
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  • Home
  • Color & Perception
    • CHROMA Topics
    • Color Spectrum - Light is Energy
    • Color in Light
    • Color in Nature
    • Color in Paint
    • Why does paint fade?
    • Color Names & Meanings
    • Color Phenomena
    • Color Perception is Individual
    • Color In Fashion
    • Color for your home
    • Color in Space
    • Color Blindness
    • Color Blind Interview
    • Synesthesia
    • Synesthete Deborah Borrowdale-Cox
    • Synesthete Stephen Orr, BH&G Editor
  • Circadian & Light for Health
    • Circadian & THERAPY Topics
    • Circadian Explained
    • Circadian Ganglion Cells
    • Circadian Melatonin
    • Circadian Animals
    • Circadian Research
    • Autism & Lighting for the Spectrum
    • Blue Light Dimming Apps
    • Red Night Lights
    • Vitamin D & Light
    • SAD - Seasonal Affective Disorder
    • Alzheimers and Light Therapy
    • Photosensitivity - Light Sensitive Drugs
    • Red Light Therapy
    • Sleep & Lighting
    • Dreams and Second Sleep
    • NASA - Lighting in Space & Undersea
    • Jet Lag
    • Sunglasses
    • Chakras
    • Crystals, Minerals, & Gemstones
  • Lighting Design
    • LIGHTing Design Topics
    • UV Germicidal Disinfection Light
    • LED Lighting Facts Card
    • CRI - Color Rendering Index
    • LED TM-30
    • LED Kelvin Color
    • LED LPW
    • LED Flicker
    • LED Glare
    • OLED - Organic LED
    • Human Centric Lighting
    • Lighting with Daylighting
    • Lighting for Healthy Buildings & Zero Net Energy
    • Lighting for Healthcare
    • Lighting for Horticulture
    • Lighting for Hospitality & LED Retrofits
    • Lighting for Museums
    • Lighting for Seniors & Low Vision
    • Lighting Design Tips & Codes
    • Parking Lot Lighting
    • Solar Lighting for Humanity & World Health
  • Dark Sky Topics
    • Dark Sky & Light Pollution
    • Dark Sky - Ecology of Night Lighting
    • Dark Sky - Turtle Safe Lighting
    • Landscape Lighting
    • LED Street Lighting Retrofit in Davis
    • Dark Sky Ordinances
    • Dark Sky & Astronomy
    • Dark Sky Reserves
  • Lighting Research & Books
    • Lighting Research
    • Lighting Publications
    • Lighting Education
  • ABOUT ChromaTherapyLight
    • About Topics
    • About Trish
    • Contact & Disclaimer
    • Social Media
    • Newsletter
    • Guidelines for Guest Writers
    • Site Map
  • Davis Insectary Garden
  • Santa Barbara Mesa Insectary Garden
How we measure color in light.

Color  in  Light
Not intended for medical advice, consult your doctor  Disclaimer

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ChromaTherapyLight

Color and Light

Color in Light

How we measure color in light? A part of the Electromagnetic Spectrum called Visible Light is measured in nanometers, nm.   This information is useful when understanding the color rendering ability and color bias of various light sources when compared to daylight.

The primary colors in light; red + blue-violet + green combine to make white light. The shadows in pure color light make the complimentary colors, found opposite on the color wheel,  magenta, turquoise, yellow.

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Tri colors forming white light.

Complimentary Shadows

This photo illustrates how complimentary shadows can be seen in color when a three primary light colors from white light, shining from different angles. Notice the light on her face shows natural color illuminated with white light; however, the shadows are bright Turquoise, Magenta, and Yellow.

The difficulty in performing this experiment is finding pure primary light sources, in the old days we used dicro PAR lamps, or theatrical filters, today we can use Monocrhomatic or tunable LED sources.
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Color Vision in Insects and animals

Animals have vision that differs from humans, bees and butterflies see colors we cannot see, more Ultra Violet wavelengths, guiding them to the patterns in flowers.  Dogs and cats mostly see."... greys and some blues and yellows." [1]
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Electromagnetic Spectrum & Visible Light

Visible light is only part of the Electromagnetic Spectrum surrounding us, X rays;, Ultra Violet Light, UV, Visible Light, Infa Red Light, Microwaves, Radio Waves, and Long waves.

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Visible Spectrum

390 to 700 Nanometers, nm, describes the wavelengths visible to the human eye.
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Footnotes

  1. http://www.colormatters.com/color-matters-for-kids/how-animals-see-color

Photo Credits

Flower Insect Vision by Tess Watson

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Learn More

Color Blindness, Theatrical Lighting, Light Sources, Color in Paint - Why it fades?

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  • Home
  • Color & Perception
    • CHROMA Topics
    • Color Spectrum - Light is Energy
    • Color in Light
    • Color in Nature
    • Color in Paint
    • Why does paint fade?
    • Color Names & Meanings
    • Color Phenomena
    • Color Perception is Individual
    • Color In Fashion
    • Color for your home
    • Color in Space
    • Color Blindness
    • Color Blind Interview
    • Synesthesia
    • Synesthete Deborah Borrowdale-Cox
    • Synesthete Stephen Orr, BH&G Editor
  • Circadian & Light for Health
    • Circadian & THERAPY Topics
    • Circadian Explained
    • Circadian Ganglion Cells
    • Circadian Melatonin
    • Circadian Animals
    • Circadian Research
    • Autism & Lighting for the Spectrum
    • Blue Light Dimming Apps
    • Red Night Lights
    • Vitamin D & Light
    • SAD - Seasonal Affective Disorder
    • Alzheimers and Light Therapy
    • Photosensitivity - Light Sensitive Drugs
    • Red Light Therapy
    • Sleep & Lighting
    • Dreams and Second Sleep
    • NASA - Lighting in Space & Undersea
    • Jet Lag
    • Sunglasses
    • Chakras
    • Crystals, Minerals, & Gemstones
  • Lighting Design
    • LIGHTing Design Topics
    • UV Germicidal Disinfection Light
    • LED Lighting Facts Card
    • CRI - Color Rendering Index
    • LED TM-30
    • LED Kelvin Color
    • LED LPW
    • LED Flicker
    • LED Glare
    • OLED - Organic LED
    • Human Centric Lighting
    • Lighting with Daylighting
    • Lighting for Healthy Buildings & Zero Net Energy
    • Lighting for Healthcare
    • Lighting for Horticulture
    • Lighting for Hospitality & LED Retrofits
    • Lighting for Museums
    • Lighting for Seniors & Low Vision
    • Lighting Design Tips & Codes
    • Parking Lot Lighting
    • Solar Lighting for Humanity & World Health
  • Dark Sky Topics
    • Dark Sky & Light Pollution
    • Dark Sky - Ecology of Night Lighting
    • Dark Sky - Turtle Safe Lighting
    • Landscape Lighting
    • LED Street Lighting Retrofit in Davis
    • Dark Sky Ordinances
    • Dark Sky & Astronomy
    • Dark Sky Reserves
  • Lighting Research & Books
    • Lighting Research
    • Lighting Publications
    • Lighting Education
  • ABOUT ChromaTherapyLight
    • About Topics
    • About Trish
    • Contact & Disclaimer
    • Social Media
    • Newsletter
    • Guidelines for Guest Writers
    • Site Map
  • Davis Insectary Garden
  • Santa Barbara Mesa Insectary Garden