JBeukema
Rookie
- Banned
- #1
since all motion is relative (a body can only move in relation to another body, multiple bodies, or a fixed point within a measurable field as viewed by an outside party- another 'body'), one could image the earth as being stationary and the sun traveling around the Earth. Of course, this requires a much more complex imagining of the motions of the other bodies, which is why it is seldom used (it is far simpler and easier {and therfore more useful} to iomagine or solar system from a fixed perspective which imagines the sun as 'stationary' relative to the orbits of the other bodies). However, one could imagine Earth as the stationary body around which Sol moves while the other bodies orbit Sol and, technically, one wouldn't be incorrect, but rather adopting a non-standard frame of reference for the observation of the movement of the heavenly bodies.
Using this frame of reference, we see that rather than the solar system spinning around a black hole, the black hole orbits the the Earth, getting ever closerand pulling other bodies near to it.
Standard? Definitely not. Useful? Not really? Needlessly complex a model/visualization? A poor choice for a frame of reference for any real application? Perhaps. But technically not wrong...
Next week: we all orbit a single electron....
Using this frame of reference, we see that rather than the solar system spinning around a black hole, the black hole orbits the the Earth, getting ever closerand pulling other bodies near to it.
Standard? Definitely not. Useful? Not really? Needlessly complex a model/visualization? A poor choice for a frame of reference for any real application? Perhaps. But technically not wrong...
Next week: we all orbit a single electron....