4 ms·
On long distances, anyway. The evidence for inverse square laws over short distance is much weaker, and so there is room for curled-up "extra dimensions" we so
by evanb 7y ago
On long distances, anyway. The evidence for inverse square laws over short distance is much weaker, and so there is room for curled-up "extra dimensions" we sometimes hear about, both in extensions to the standard model and in stringy ideas.
- fhars 7y ago„Long distance“ here includes anything longer than a 1000th of the classical radius of the hydrogen atom, which is to a very high accuracy described by an inverse square law.
- evanb 7y agoGravity might have extra dimensions on a much larger scale than that, potentially up to the millimeter scale or so.