measuring the energy of the very small 

An electron volt is a unit of energy, but how is it derived and determined?
In this video I quickly review how energy is increased in fields, starting with a familiar gravitational field situation and then discuss an electron in an electric field. Quickly discussing the mathematics involved in energy of the electron, I show that relationship between the joule and the electron volt.
See www.physicshigh.com for all my videos and other resources.
If you like this video, please press the LIKE and SHARE with your peers. And please add a COMMENT to let me know I have helped you.
Follow me
facebook: @physicshigh
twitter: @physicshigh
Support me at Patreon: www.patreon.com/highschoolphysicsexplained
For a one off support please consider PayPal: pelooyen@gmail.com