Galileo and The Lamps (2)
When the lamplighter knocked against them, or the wind blew through the cathedral, they would swing back and forth like pendulums. Galileo noticed this. Then he began to study them more closely.

He saw that those which were hung on rods of the same length swung back and forth, or vibrated, in the same length of time. Those that were on the shorter woods vibrated much faster than those on the longer rods.

As Galileo watched them swinging to and fro, he became much interested. Millions of people had seen lamps moving in this same way, but not one had ever thought of discovering any useful fact connected with the phenomenon.


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  • ceiling: õÀå.
  • pendulum: ÁøÀÚ, Èçµé¸®´Â Ãß.
  • vibrate: Áøµ¿ÇÏ´Ù, Èçµé¸®´Ù.
  • in the same length of time: ¶È°°Àº ½Ã°£ ³»¿¡.
  • microscope: Çö¹Ì°æ.
  • to and fro: À̸®Àú¸® ¿Ô´Ù°¬´Ù(back and forth).
  • not one had ever thought of: ÀÌÀü¿¡´Â ¾î´À ´©±¸µµ »ý°¢Á¶Â÷ ¸øÇß´Ù .


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