鐘表為什么都是順時針轉(zhuǎn)的？
[ 2006-08-28 09:48 ]
有一件東西是我們天天都要看的，猜猜是什么？答案是——時間！所有鐘表的指針都是從左向右轉(zhuǎn)的，我們管這個叫順時針。不過細(xì)心的你有沒有想過，為什么鐘表的指針都是從左向右轉(zhuǎn)？順時針又是怎么來的？原來，這些都是太陽惹的“禍”。
 Mechanical clocks were invented in the northern hemisphere by inventors who were trying to make
models of the sun's movement in the sky.
To watch the sun from the northern hemisphere, you have to face south. Then
the sun will rise on your left and pass over your head to set on your right.
Since the hour hand on the clock was made to follow the sun's motion through the
sky, it moves from left to right over the top of the clock - clockwise. The
hands are actually modeled after the shadow on a sundial.
hemisphere: 半球
sundial: 日晷儀：指示某地太陽時間的一種儀器，通過一個中心突出指針在圍繞刻有標(biāo)準(zhǔn)刻度的日晷上的陰影來指示時間。
（英語點(diǎn)津 Annabel 編輯） |
