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The formula for frequency is f = c/lambda, where c is the speed of light in a vacuum, lambda is the wavelength in meters, and f is frequency in cycles per second. So, if the wavelength is 700.5 nm, the frequency is 4.28 E14 hertz.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoYou mean the energy content of photon.
E = h c / L
Here h is Planck's constant = 6.626 * 10^-34 Js
c = speed of light = 3 * 10^8 m/s
And L = wavelength = 700 nm ie 7 * 10^-7 m
Plug and you get the energy of photon in Joule.
To convert the same in eV, we have to divide it by 1.602 * 10^-19
So required energy of each red photon = 1.773 eV
Wiki User
∙ 14y ago750 nm would be a very deep red, as it is right on the border between visible and infrared.
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∙ 12y agobrown sh**
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∙ 14y agored
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Which colour has the shortest wavelength?
Shortest wavelength means the highest frequency, meaning the photons have the highest energy. That is color violet. The violet light colors the skin brown. Red light with lower energy photons cannot do that.
True or false visibe light with the shortest wavelength is red light?
No, red is the longest wavelength of visible light, with the lowest frequency and the least energy. Violet light has the shortest wavelenght, with the highest frequency and the most energy (of visible light).
How do the wavelength and frequency of red light compare to the wavelength and frequency of blue light?
very nice answer.
Why emulsions are white in colour?
Because of the differences in droplets sizes in which each size scatters specific wavelength of light which leads to scattering of all visible spetrume or what we see as a white color
What is the wavelength of sodium light?
5890
What is the wavelenght of red light?
it is short wavelength
Wavelengths in this range of light are those that humans can see?
If it is between 390 and 700nm (nano meter) then yes.
What range of wavelengths does UV radiation have?
Visible light has a wavelength of 400nm-700nm (from violet to red). Ultraviolet rays which starts immediately after the violet region of visible light have their wavelength from 10nm-400nm.(where nm means nano-meter)
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.
If a certain star has a peak wavelength of 700NM then its surface temperature is about?
4200K
What colour is the shortest wavelength of light?
Violet.
What colour light has the lowest wavelength?
In the "visible" light it is violet.
If the star Antares has a peak wavelength of 700NM then its surface temperature is about?
4200 K
What wavelength is absorbed in photosynthesis?
PAR- Photosynthetically Active Radiation- 400-700nm
Which colour have longest wavelength in the visible spectrum?
Red light has the longest wavelength.
How does wavelength affect visible light?
It alters the energy and colour of the light.
What is the weakness color of the light?
Your question is meaningless. Light is electromagnetic radiation and the colour of light depends on the wavelength of this radiation. There is no such thing as a "weak" wavelength.
