I'm studying quantum physics.
I'm given a wavelength and asked what the work function is in electron volts.
The answer requires that I take the equation:
where h is planck's constant and f is frequency.
Next step is to change this equation to:
It is this conversion of equations that is confusing me.
How and why is this done. What is the relationship between them. And, is this anything to do with f=1/T? And, why is the universe exponentially more interesting the more you study it?