can find the gravitational constant with string and a mountain
temples on high mountain peaks and on steep cliffs - why?
rising wolf mountain
mountain(图片源自网络)
general 2560x1600 mountain snow landscape
can find the gravitational constant with string and a mountain
temples on high mountain peaks and on steep cliffs - why?
rising wolf mountain
mountain(图片源自网络)
general 2560x1600 mountain snow landscape