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The prefix n in the metric system refers to a nanometer, which is .000000001 meters. So 400 nm is equal to 4.00 E(-7) meters.
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What are some positive and negative things about ultraviolet light?
UV rays are electromagnetic waves have shorter wavelength than that of visible light(10nm to 400nm) It can cause chemical changes, hence causes many substance to glow It is non ionizing radiation It can cause damage to living beings(harmful to humans) and is blocked by ozone layer It may leads to cancer It produces heat in surface of earth Used to prevent counterfeiting UV rays are used for wireless communication also
What is a wavelength measured in?
By an equation. E=MC^2, or energy of a particle equals its mass times the speed of light squared. V=C/(lambda), or frequency equals the speed of light divided by wavelength. The easiest way is using Planck's constant, which allows you to find frequency and then, by the equations above, wavelength, based on energy calculated by any means.
How much of the electromagnetic spectrum is occupied by visible light?
Between 400nm and 700nm
How big is one tetanus germ?
Tetanus is a virus and it is anywhere from 10 - 400nm in diameter.
What are the waves of visible light?
Anything from 700nm (red)-400nm (violet) is the visible light spectrum.
What wavelength of light is not visible to the human eye?
Any that is shorter than about 400nm or longer than about 750nm isn't.
What is the frequency of all 7 electromagnetic waves in order?
radio wave 30cm> microwave 1nm-30cm infrared 700nm-1nm visible light 400nm-700nm the only wave that can be seen by human eyes ultraviolet 60nm-400nm x rays 0.001nm-60nm gamma rays >0.1nm
What are the wavelength limits for visible spectrum?
The range of visible spectrum is 400nm(Violet) to 700nm(Red).. (1nm = 10-9m)
What is the differences between visible and invible radiation?
Radiations within the range of 200 - 400nm are Visible Radiations. And others out of this range are invisible radiations.
What is the wave length of UV?
The wave of UV is shorter then visible light but longer then x-ray waves. It ranges between 400nm and 10nm.
What is the frequency opf UV?
UV has a wavelenght of 400nm and less you can calculate the frequency with this formula V (frequency) = c (speed of light) / λ (wavelenght)
What is the wave length of uv waves?
The wave of UV is shorter then visible light but longer then x-ray waves. It ranges between 400nm and 10nm.
Why is the shortest wavelength of visible light 400nm?
Because the average human being has no receptors on the retinas of his eyes that respond to electromagnetic waves that are shorter than that.
Do light wave frequencies determine what color you see?
No, the wavelength determines the color of the light. 700nm corresponds to red, 400nm to about purple, and in between are the rest of the visible colours.
