p1mrx
p1mrx t1_j6vs4an wrote
Reply to comment by News_of_Entwives in Suppose I have a container of water with a ball floating on top of it. I put it outside overnight and the water freezes. Since the water's volume increases as it freezes, the ball is raised. Where does the increased gravitational potential energy come from? by schematicboy
So that thermal energy "came from" the liquid water, and the water was liquid in the first place due to energy from the sun.
p1mrx t1_j455z1h wrote
Reply to A wormhole that connects two points in space where the strength of gravity is different would let you violate the 2nd law of thermodynamics. by chancellortobyiii
Imagine that you put a (fictional) gravity shield on the ground, that creates a column of zero gravity above it, extending all the way to space.
If you tried to throw a ball into this column, it would just bounce off, unless it were initially traveling at escape velocity (11 km/s). The column would contain mostly vacuum, because it's connected to space, and air molecules aren't moving fast enough to enter it.
Maybe a wormhole would work the same way. If you want something to travel "upwards", you need to give it a push.
p1mrx t1_j10mu7e wrote
It's not "cheaper" if you can't buy it.
p1mrx t1_j0dn03n wrote
Reply to comment by Stopa42 in 5 second toaster and kettle by F1NNTORIO
Electric vehicle batteries regularly deliver 150+ kW, so it might be more practical to design a superkettle into the car's electrical system.
p1mrx t1_ix0a80y wrote
Reply to Small is bestest! by gelotuz
Sa s estest!
p1mrx t1_itsczio wrote
Reply to comment by xeallos in Moonwalkers give users a powered boost as they walk by geoxol
Video @2:47: "we've [...] covered hundreds of miles of the roughest urban terrain, from cracked sidewalks to gravel"
p1mrx t1_isb9ym4 wrote
Reply to comment by HelloWorld_502 in Even Google's Own Staff Thinks 'Incognito Mode' Isn’t All It’s Cracked Up to Be | Internal communications show employees joking about Incognito's abilities with one comparing it to "Guy Incognito" from The Simpsons by Hrmbee
You can also make Chrome use a SOCKS5 proxy just for incognito mode (tunneled over WireGuard or SSH), to hide the traffic from your local ISP.
p1mrx t1_jdows5a wrote
Reply to My camera setup on the International Space station. More details in comments. by astro_pettit
What challenges have you faced in adapting to life as a floating head? Do you feel that your launch mass was a factor during the astronaut selection process?