from The American Heritage® Dictionary of the English Language, 4th Edition

  • Planck, Max Karl Ernst Ludwig 1858-1947. German physicist. He won a 1918 Nobel Prize for discoveries in connection with quantum theory.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The units of measure eponymous of Max Planck.
  • proper n. A German surname.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. German physicist whose explanation of blackbody radiation in the context of quantized energy emissions initiated quantum theory (1858-1947)


Sorry, no etymologies found.


  • If space-time is a grainy hologram, then you can think of the universe as a sphere whose outer surface is papered in Planck length-sized squares, each containing one bit of information. Shadows on Plato's Cave: Giant Hologram Version

  • He said that a given photon's energy is equal to its frequency times a constant named after him, that we call Planck's Constant.

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  • Not one of the theories devised by Newton, Darwin, Einstin or Planck is certain and perfect.

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  • Planck used the device of dividing up the energy states into multiples of the unit or ˜quantum™ hÎ" (where Î" is the frequency of radiation and h is what subsequently became known as Planck's constant).

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  • And two particles can make a miniscule black hole in just this way if they collide with an energy above a fundamental limit called the Planck energy.


  • ScienceNow reports that black holes can only form when particles collide at one-third of the fundamental limit known as the Planck energy.

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  • Note: The statement of Planck is more consistent with history:

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  • This is called Planck Time after the German theoretical physicist Max Karl Ernst Ludwig Planck.

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  • Today, h is known as Planck’s constant in his honor, and has the value 6.626 × 10-34 kg m2/s that’s 0.000000000000000 0000000000000000006626 kg m2/s.

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  • Another idea was to base it on a relationship with an esoteric concept in physics called the Planck Constant, something even Stock had trouble expressing in layman's terms.

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