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en.wikipedia.org/wiki/Visible_spectrum

Bees' visible spectrum ends at about 590 nm, just before the orange wavelengths start. Birds can see some red wavelengths, although not as far into the light spectrum as humans. [13] The popular belief that the common goldfish is the only animal that can see both infrared and ultraviolet light [14] is incorrect, because goldfish cannot see ...

en.wikipedia.org/wiki/Color

The RGB color space for instance is a color space corresponding to human trichromacy and to the three cone cell types that respond to three bands of light: long wavelengths, peaking near 564–580 nm (red); medium-wavelength, peaking near 534–545 nm (green); and short-wavelength light, near 420–440 nm (blue).

www.asu.edu/courses/phs208/patternsbb/PiN/rdg/color/color.shtml

Violet light is electromagnetic radiation with wavelengths of 410 nanometers and red light has a wavelength of 680 nanometers. The nanometer is a unit of distance in the metric scale and is abbreviated as nm. One nanometer (nm) equals one thousand millionths of a meter (m) or 1 nm = 10-9 m. One nanometer is a distance too small to be resolved ...

www.reference.com/science/wavelength-red-light-6ca248f148d9601f

In the visible light spectrum, the wavelength of red light ranges from 622 to 780 nanometers. Red light has the longest wavelength and the shortest frequency. Violet light, which has the shortest wavelength, is at the other end of the visible spectrum.

www.physlink.com/Education/AskExperts/ae2.cfm

What are the wavelengths of the basic colors (Red, Orange, Yellow, Green, Blue, Violet) in the color spectrum? ... Answer Here are the wavelengts of the colors you requested: Red: 780 to 622 nm: Orange: 622 to 597 nm: Yellow: 597 to 577 nm: Green: 577 to 492 nm: Blue: 492 to 455 nm: Violet: 455 to 390 nm: Note: 1 nm (nanometer) = 10-9 m ...

redlighttherapy.lighttherapyoptions.com/infrared-light-therapy

Near infrared light therapy is an every-day term for the science of photobiomodulation. It uses invisible, near infrared wavelengths between 700 and 1200 nm to deliver energy to the cells, stimulating healing and relieving pain.

redlightman.com/light-therapy/red

Most red light devices on the market are weak and will only penetrate 2 – 3mm of skin tissue. Stronger devices such as 100mW/cm²+ LED light devices can reach through the entire skin layer, healing from the bottom up. The Wavelengths of Red Light Therapy. Red light therapy uses any wavelength between 610 nm and 700 nm.

www.livephysics.com/physical-constants/optics-pc/wavelength-colors

The order of colors in light, arranged from shortest wavelength to longest, is called the visible spectrum of light. The image below shows light's visible spectrum, which runs from violet to red. You might recognize the spectrum as the order of colors in a rainbow.

www.rs-online.com/designspark/led-wavelength-vs-led-colour

The secret often lies in the terminology, such as “True”, “Deep” and “Hyper”, but that isn’t always the best thing to go by. Take the wavelength value given in nanometres (nm) and compare it against a colour chart: The wavelength will tell you the colour of the LED light, but I would still take the “try before you buy” approach.

www.theledlight.com/color_chart.html

Led Color Chart - help yourself to choose your next LED or CFL bulb using led color chart. This chart will give you basic idea about what does nM (nanometers) or wavelength mean with respect to the color of LEDs.