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Look carefully the picture a...

Look carefully the picture and guess the name of movie director.

Correct answers: 56

The first user who solved this task is Djordje Timotijevic.

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April Fool's Day - Moldy sandwich

Send your kid to school with a moldy sandwich. The sandwich is fine, of course. It’s the sandwich bag that has green markings on it.

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Photon

In 1926, in a letter published in Nature, G.N. Lewis coined the word "photon" when he suggested that it "would seem inappropriate to speak of one of these hypothetical entities as a particle of light, a corpuscle of light, a light quantum, or a light quant, if we are to assume that it spends only a minute fraction of its existence as a carrier of radiant energy, while the rest of the time it remains as an important structural element within the atom. It would also cause confusion to call it merely a quantum, for later it will be necessary to distinguish between the number of these entities present in an atom and the so-called quantum number. I therefore [propose for this] which is not light but plays an essential part in every process of radiation, the name photon.

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