Posted on Leave a comment

Sidereal day (Science Dictionary)

Sidereal day: The exact time for one complete rotation of the earth relative to a particular star. A sidereal day is about 4 minutes shorter than a mean solar day. Astronomers use sidereal time as a way to keep track of the direction in which their telescopes need to be pointed to view any given star in the night sky. A sidereal day is about 1436.07 minutes.

_ ស្វែងរកឬបកប្រែពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖
_ខាងក្រោមនេះជាសៀវភៅនិងឯកសារសម្រាប់ការងារនិងរៀនគ្រប់ប្រភេទ៖
Leave a Reply