Science Quickly

Scientific American in 1925: Solar Eclipses, Seances and Some Strange Inventions

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Apr 28, 2025
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INSIGHT

Solar Shadow Play Explained

  • During the 1925 total solar eclipse, observers saw writhing serpentine shadow patterns on the ground.
  • These shadows were caused by air density variations refracting sunlight as the sun's light narrowed.
INSIGHT

Eclipse Timing Precision Advances

  • Scientists measured the 1925 eclipse timing using telegraph signals and precise recording machines.
  • They predicted eclipse timing could be pinpointed within five seconds or better in the future.
ANECDOTE

Houdini vs. Medium Marjorie

  • Scientific American seriously investigated a medium named Marjorie through nearly 100 seances.
  • Harry Houdini participated and eventually dismissed her claims due to lack of evidence.
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