$$ f $$ Unit $$ \mathrm{Hz} = \frac{ 1 }{ \mathrm{s} } $$

Frequency of the used light. The greater the frequency, the greater the energy of one mole of photons.

Avogadro constant

$$ N_{\text A} $$ Unit $$ \frac{1}{\mathrm{mol}} $$

The Avogadro constant is a physical constant with the value \( N_{\text A} ~=~ 6 \cdot 10^{23} \, \frac{1}{\mathrm{mol}} \) and represents the number of photons that are in one mole.

$$ h $$ Unit $$ \mathrm{Js} = \frac{ \mathrm{kg} \, \mathrm{m}^2 }{ \mathrm{s} } $$

Planck's constant is a physical constant from quantum mechanics and has the value:$$ h ~=~ 6.626 \, 070 \, 15 \,\cdot\, 10^{-34} \, \mathrm{Js} $$

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