The Planck–Einstein relation describes the energy of each photon in terms of the photon's frequency.

普朗克—爱因斯坦关系式用光子的频率来描述每个光子的能量。

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What Einstein then clarified for us was that we could also be talking about energies, and he described the relationship between frequency and energy that they're proportional, if you want to know the energy, you just multiply the frequency by Planck's constant.

爱因斯坦阐述的是我们,也可以从能量的角度来谈论，他描述频率和能量之间的关系,是成比例的，如果希望知道能量值，你用普朗克常数乘以频率就可以了。

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