3 ms·
On Earth's surface, it's not like gravity is optional.
by loeg 3y ago
On Earth's surface, it's not like gravity is optional.
- westurner 3y agoTo get real technical about it, gravity is inconstant at constant altitudes when varying latitude and longitude. 9.8m/s^2 at sea level, and it decreases with altitude all the way out to Lagrangian points where the gravitational attraction of the sun (and other local masses) is equal to that of earth; but solar pressure presumably displaces objects at zero-gravity rest. Gravity is 'optional' with quantum locking. Gravity is a weak force. Gravity is maybe the least lossy form of potential energy storage?
- loeg 3y agoA key feature of ice-breakers is that they operate at sea level, and in fact rely on gravity.
- westurner 3y agoThey are also surrounded by fluid that as ballast affects the density/volume/buoyancy/displacement(?) of the hull (and the inertia of the craft), which could be steel-plated [3d printed and/or pressure molded] biocomposite that lasts for spec years in seawater.