What is the correct equation for calculating the frequency of red light in air?

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In summary, the frequency of red light in air is approximately 4.3×10^14 Hz and can be measured using a spectrophotometer. It can change at different altitudes due to variations in air density and temperature and can be affected by factors such as the medium it is traveling through, as well as temperature and pressure. The frequency of red light in air is also directly proportional to its energy.
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If the wavelength of red light in air is 816 nm, What is it's frequency? If I use the equation F=c/wavelegth -> with c being 3 x 10^8m/s, why can't I get the right answer? I even converted the 816 nm to 8.16 x 10 ^ 11 m. :confused:
 
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You need to be more careful with your units:

816 nm = 816 * 10^(-9) m = 8.16 * 10^(-7) m
 
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The frequency of red light in air can be calculated using the equation F=c/λ, where F is the frequency, c is the speed of light (3 x 10^8 m/s), and λ is the wavelength. In this case, the frequency would be 3.68 x 10^14 Hz.

It is important to note that the wavelength given in the question (816 nm) is already in nanometers, so there is no need to convert it to meters. Additionally, when converting to meters, the correct conversion would be 8.16 x 10^-7 m, not 8.16 x 10^11 m.

If you are still not getting the correct answer, it is important to check your calculations and make sure you are using the correct units. It is also possible that there may be a typo in the given wavelength or in the equation being used.
 

1. What is the frequency of red light in air?

The frequency of red light in air is approximately 4.3×10^14 Hz.

2. How is the frequency of red light in air measured?

The frequency of red light in air is typically measured using a device called a spectrophotometer, which detects and measures the wavelengths of light.

3. Does the frequency of red light in air change at different altitudes?

Yes, the frequency of red light in air can change at different altitudes due to variations in air density and temperature.

4. What factors can affect the frequency of red light in air?

The frequency of red light in air can be affected by the medium it is traveling through, such as air or water, as well as external factors such as temperature and pressure.

5. How does the frequency of red light in air relate to its energy?

The frequency of red light in air is directly proportional to its energy. This means that as the frequency increases, so does the energy of the light.

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