Electron Volt (eV) 3
Electron Volt (eV) 3 : The electron volt is the energy that we would give an electron if it were accelerated by a one volt potential difference. 1 eV = 1.602 x 10-19?J. This term is most often used by physicists and electrochemists. For the budding scientist: Here are the two relationships that relate energy, frequency and wavelength. The first is c = ?? where c = the speed of light in vacuum (3.00 x 108?m/s), ? = frequency and ? is wavelength. The second is E = h? where E = energy, h is a special constant called Planck's constant (6.63 x 10-34J.s) and ? is again frequency. The second equation tells us that frequency is proportional to energy. Combining the two, we find that frequency and energy are inversely proportional to wavelength
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