香港日偏食的影子

astroQM

Before I left Hong Kong for Tongling, I taught all my students and colleagues how and what to observe during partial eclipse. One thing that I asked them to pay attention to was their own shadow. With 75% eclipse, can they see their shadow having one edge sharper than the other?

Despite my absence, a lot of interest was generated in my school. You can see some photos here:
http://www.imsc.edu.hk/photo/2008_09/20090722/index.html

mca

AstroQM,

很有意義的通識教育活動，從相片集中我也感覺到学生們的喜悅。

除了影子边緣实驗，還有一个叫 Shadow Bands 实驗可以試做的，下次有日食机会時要玩吓啦   http://www.strickling.net/shadowbands.htm

AC

C.L.Chan

若未看過以前同好的解釋,可能會看不明這張照片.
因為偏食時,太陽似月牙(牛角)形.
你的身體擋著太陽,一邊像有一個光源照射,故影子較清楚.
另一邊身像有兩個月牙的光源照射,影子便蒙糊一點了.
CL