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What is Visible light wavelength?

Posted By: Admin on January 14, 2010 in Actual Praxis Biology Question, Practice Exam 1 - Comments: 2 Comments »

Visible light wavelengths are between 400 and 700 nanometers.

Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light.

When white light shines through a prism, the white light is broken apart into the colors of the visible light spectrum. Water vapor in the atmosphere can also break apart wavelengths creating a rainbow.

 

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  1. SchoolTeacher35 says:
    January 22, 2010 at 2:58 pm

    Yup its about 400 and 700 nanometers. Nanometer is how long ? well it very small… take this for example: 1 nanometer = 1.0 × 10-9 meters

  2. DianaRampersaud says:
    January 22, 2010 at 2:59 pm

    Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum labeled “visible light”. This “visible light” corresponds to a wavelength range of 400 – 700 nanometers (nm) and a color range of violet through red. The human eye is not capable of “seeing” radiation with wavelengths outside the visible spectrum. The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red. Ultraviolet radiation has a shorter wavelength than the visible violet light. Infrared radiation has a longer wavelength than visible red light. The white light is a mixture of the colors of the visible spectrum. Black is a total absence of light.

    Earth’s most important energy source is the Sun. Sunlight consists of the entire electromagnetic spectrum.

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