1. All black body radiations,
All the spectrum variations,
All atomic oscillations
Vary as “h v.”

2. Ultraviolet vibrations,
X- and gamma-ray pulsations,
Ordinary light sensations
All obey “h v.”

Chorus:
Here’s the right relation
Governs radiation,
Here’s the new,
And only true,
Electrodynamical equation;
Never mind your d/dt^{2},
V times e or half mv^{2}
(If you watch the factor “c^{2}”)
E equals “h v.”

3. Even matters calorific,
Such things as the heat specific
Yield to treatment scientific
If you use “h v.”

4. In all questions energetic
Whether static or kinetic,
Or electric, or magnetic,
You must use “h v.”

(Chorus)

5. There would be a mighty clearance,
We should all be Planck’s adherents
Were it not that interference
Still defies “h v.”

Max
Planck
"I knew the formula that reproduces
the energy distribution in the normal spectrum; a theoretical
interpretation had to be found at any cost, no matter how high."