科研之友
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<正>从地球仪上看,南极位于底部。那么为什么站在南极洲的人们,并不会感觉到自己是颠倒的呢?Why don’t people in Antarctia(南极洲)feel upside down?When you look at a globe,it may seem as if north is"up"and south is"down."But no matter where you go on Earth s surface,"down"is toward the center of the planet.Gravity is always pulling your whole body and everything around you in the direction of Earth’s core.Whether you are in Antarctica,at the equator (赤道),or anywhere else on Earth,if you’re upright with your feet on the ground,you feel right side up.
