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Daniel Colladon
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Charles-François Sturm, pencil sketch by Daniel Colladon, 1822; in the Academy of Sciences, Paris.
Discover
The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.
What If the President Is Impeached?
Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)
9 Worst Generals in History
Panama Canal infographic
Timeline and Map of the Panama Canal
Stylish light blue jeans on wooden background, closeup of inset pocket
Why Do Jeans Have That Tiny Pocket?
Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden
7 Winter Solstice Celebrations From Around the World
Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009
Which Is Correct: Hanukkah or Chanukah?

Daniel Colladon

Swiss physicist

Learn about this topic in these articles:

sound velocity research

  • Acoustics
    In acoustics: Measuring the speed of sound

    …water was first measured by Daniel Colladon, a Swiss physicist, in 1826. Strangely enough, his primary interest was not in measuring the speed of sound in water but in calculating water’s compressibility—a theoretical relationship between the speed of sound in a material and the material’s compressibility having been established previously.…

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