I want to know the answer to the following question:
In what year was the value E associated by Einstein with quantum theories of energy?
All the background I'm provided with is that "First recognized in 1900 by Max Planck, it was originally the proportionality constant between the minimal increment of energy, E, of a hypothetical electrically charged oscillator in a cavity that contained black body radiation, and the frequency, f, of its associated electromagnetic wave.". Is that enough to answer the question?
Answer: no