00:02
Photons are individual particles that are bundles of energy that make up an electromagnetic wave.
00:09
Here we have a photon with a wavelength of 520 times 10 to the minus 9 meters.
00:19
And we are first going to deal with some of the wave properties of a photon.
00:26
So photons travel at the speed of light, c, and that, that is the product of the frequency of the oscillating wave times the wavelength of the wave.
00:40
So using the wavelength of this photon and the speed of light, we can calculate the frequency of the wave associated with the photon.
00:56
And that frequency is c over lambda.
01:01
The speed of light will use 3 .0 times 10 to the 8th.
01:06
Meters per second, and we have the wavelength in 10 to the minus 9 meters.
01:17
So we get a frequency of 5 .77 times 10 to the 14th hertz.
01:28
Hertz is the same as cycles per second.
01:37
Now, in terms of the particle, particle property would be momentum, and we can calculate that from the wavelength using the relationship plank's constant over wavelength equals momentum.
01:59
Plank's constant is 6 .63 times 10 to the minus 34, joules times seconds, and the wavelength is 520 nanometers, and a jewel divided by a meter is the same as a newton.
02:23
So our final result is 1 .28 times 10 to the minus 27 newton's times seconds.
02:37
And momentum of a photon is an interesting thing.
02:44
It says that photons within an electromagnetic wave act like little tiny bullets that can deposit their momentum in a collision and their energy...