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sciencestruck.com/color-spectrum-chart

The frequency of wavelength range for indigo is around 425-450 nm and frequency of 670-700 THz. In the above color spectrum chart, indigo is made a subset of violet color. The low range of the color explains why it is difficult to distinguish this color in the spectral band.

www.thoughtco.com/the-visible-light-spectrum-2699036

The visible light spectrum is the section of the electromagnetic radiation spectrum that is visible to the human eye. Essentially, that equates to the colors the human eye can see. It ranges in wavelength from approximately 400 nanometers (4 x 10 -7 m, which is violet) to 700 nm (7 x 10-7 m, which is red). It is also known as the optical spectrum of light or the spectrum of white light.

www.keyword-suggest-tool.com/search/nm+wavelength+chart

Visible Light Spectrum Overview and Chart. Thoughtco.com The visible light spectrum is the section of the electromagnetic radiation spectrum that is visible to the human eye. Essentially, that equates to the colors the human eye can see. It ranges in wavelength from approximately 400 nanometers (4 x 10 -7 m, which is violet) to 700 nm (7 x 10-7 m, which is red).

en.wikipedia.org/wiki/Visible_spectrum

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light.A typical human eye will respond to wavelengths from about 380 to 740 nanometers. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.

en.wikipedia.org/wiki/Electromagnetic_spectrum

Electromagnetic radiation with a wavelength between 380 nm and 760 nm (400–790 terahertz) is detected by the human eye and perceived as visible light. Other wavelengths, especially near infrared (longer than 760 nm) and ultraviolet (shorter than 380 nm) are also sometimes referred to as light, especially when the visibility to humans is not ...

en.wikipedia.org/wiki/List_of_laser_types

Laser gain medium and type Operation wavelength(s) Pump source Applications and notes Dye lasers: 390-435 nm (), 460-515 nm (coumarin 102), 570-640 nm (rhodamine 6G), many others Other laser, flashlamp Research, laser medicine, spectroscopy, birthmark removal, isotope separation.The tuning range of the laser depends on which dye is used.

www.waveformlighting.com/tech/what-is-the-difference-between-365-nm-and-395-nm...

Of course, the 395 nm LED also emits at wavelengths below 395 nm as well, and the light energy at these wavelengths are very effective at creating fluorescence effects or initiating UV-A reactions. But, as the chart shows, it is important to notice that a significant portion of the light energy is being emitted in the visible, violet region.

www.vaughns-1-pagers.com/science/uv-spectrum.htm

The UV portion of the chart has been expanded to show UV frequency bands and nomenclature.. - This chart is intended for those who want to have a better grasp of the UV wavelengths. The UV bands are defined by wavelength. Band Nanometers UVA - - - 320-400 nm UVB - - - 290-320 nm UVC - - - 220-290 nm

www.hottconsultants.com/techtips/freq-wavelength.html

For 1/2 wavelength, multiple the 1/4 wavelength number by two. For 1/10 wavelength, multiple the 1/20 wavelength number by two. For 1/50 wavelength, multiple the 1/100 wavelength number by two. To convert meters to inches multiply by 39.37. To convert cm to inches divide by 2.54. To convert mm to inches divide by 25.4.

www.thefoa.org/tech/wavelength.htm

The wavelengths we use for transmission must be the wavelengths we test for losses in our cable plants. Our power meters are calibrated at those wavelengths so we can test the networking equipment we install. The three prime wavelengths for fiber optics, 850, 1300 and 1550 nm drive everything we design or test.