Red light corresponds to a range of wavelengths in the visible spectrum. The specific wavelength of red light can vary, but it is typically considered to be in the range of approximately 620 to 750 nanometers (nm).
Planck's constant (denoted by h) is a fundamental constant in quantum physics that relates the energy of a photon to its frequency. The equation that connects the energy (E) of a photon to its frequency (ν) is given by E = hν. In this equation, Planck's constant acts as the proportionality constant between energy and frequency.
To calculate the wavelength of red light using Planck's constant, we can use the equation c = νλ, where c is the speed of light, ν is the frequency, and λ is the wavelength.
Rearranging the equation, we get:
λ = c/ν
Since the speed of light in a vacuum is a known constant (approximately 3 x 10^8 meters per second), we can use this value along with the frequency of red light to calculate the corresponding wavelength.
For example, if we consider red light with a frequency of 4.84 x 10^14 Hz (corresponding to a wavelength of approximately 620 nm), we can calculate the wavelength as follows:
λ = (3 x 10^8 m/s) / (4.84 x 10^14 Hz) = 6.2 x 10^-7 m = 620 nm
By using Planck's constant in conjunction with the speed of light, we can relate the frequency and wavelength of light.