| ▲ | ikiris 5 days ago | |
You can't calculate gravity from the basic observation "rocks fall" without other data. | ||
| ▲ | olddustytrail 5 days ago | parent [-] | |
If you know the Earth is round you can guess at it. | ||
| ▲ | ikiris 5 days ago | |
You can't calculate gravity from the basic observation "rocks fall" without other data. | ||
| ▲ | olddustytrail 5 days ago | parent [-] | |
If you know the Earth is round you can guess at it. | ||