Why The Apple Falls

The world is weird and physicists have been asking strange questions like this forever. In this book, you'll meet many of the great men and women (many of them Indians) who found the answers, and you'll learn why some of those answers led to even stranger questions. Why do we need lots of nothing (zeroes) to count large numbers? Why does a smashed glass not repair itself? How old is the universe? Why do apples fall down and not up? Why does an astronaut become younger than her twin sister?