4 ms·
GR says that you can pick any frame that you want. The Earth-centered, Earth-fixed coordinate system happens to be really convenient practically, for things lik
by User23 2y ago
GR says that you can pick any frame that you want. The Earth-centered, Earth-fixed coordinate system happens to be really convenient practically, for things like navigation satellites.
- deleted 2y ago[deleted]
- justlikereddit 2y agoSure you can do that. But the context of what is going on in different frames will be mostly lost. Explain the history of earth seen from a probe hovering one inch above the event horizon of Sagittarius A*? From the perspective of the probe: "The solar system, home of mankind was a blink in the sky that lasted 1 second according to probe time. As was most other stars, as seen from here. Surely nothing important could ever happen in such a short timeframe. Fin." There's important nuances to what perspective one have. Something that seems to not just be missed but actively fought against in modernity.
- uoaei 2y agoIn the context of GR, at cosmological scales, every frame is an inertial frame. That means fictitious forces will arise if you're not careful to account for that.