The essential point is that, although coordinates are a powerful, and sometimes essential, tool in many calculations, the fundamental laws of physics can be expressed without the aid of coordinates; and, indeed, their coordinate-free expressions are generally elegant and exceedingly powerful.
タグ: without, physics, powerful, sometimes

"Kip Thorne"の他の名言

My passion is to understand the non-linear dynamics of warped space-time, and the ideal venue for this is black-hole collisions.
タグ: venue, ideal, understand, passion
Each black hole spins on its axis like the Earth spins. That spin creates two vortexes of twisting space, somewhat like vortexes in a bathtub or a whirlpool.
タグ: like, earth, space, black
A black hole really is an object with very rich structure, just like Earth has a rich structure of mountains, valleys, oceans, and so forth. Its warped space whirls around the central singularity like air in a tornado.
タグ: earth, rich, space, black
'Closed timelike curve' is the jargon for time travel. It means you go out, come back and meet yourself in the past.
タグ: past, yourself, time, you
A big misconception is that a black hole is made of matter that has just been compacted to a very small size. That's not true. A black hole is made from warped space and time.
タグ: space, matter, black, time
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