News tagged with heat flow
Cosmic entropy could be 100 times greater than previously thought
Oct 06, 2009 |
4.3 / 5 (20) |
11
(PhysOrg.com) -- A new analysis of supermassive black holes has discovered the entropy of the universe is much greater than previously thought, which means it may also be very slightly closer to ultimate heat death.
Energy-autonomous sensors for aircraft
Oct 01, 2009 |
3 / 5 (1) |
1
Aircraft maintenance will be easier in future, with sensors monitoring the aircraft skin. If they discover any dents or cracks they will send a radio message to a monitoring unit. The energy needed for this ...
Changes in net flow of ocean heat correlate with past climate anomalies
Aug 14, 2009 |
4.2 / 5 (15) |
9
Physicists at the University of Rochester have combed through data from satellites and ocean buoys and found evidence that in the last 50 years, the net flow of heat into and out of the oceans has changed ...
Achieving optimal efficiencies for nanoengines
Apr 29, 2009 |
3.8 / 5 (8) |
1
(PhysOrg.com) -- "There's a lot of recent interest in understanding the functioning and optimal performance of small systems," Katja Lindenberg tells PhysOrg.com. Lindenberg is a scientist in the Department of Chemistry and Bi ...
Plate tectonics started over 4 billion years ago, geochemists report
Space & Earth / Earth Sciences
Nov 26, 2008 |
4.6 / 5 (23) |
0
(PhysOrg.com) -- A new picture of the early Earth is emerging, including the surprising finding that plate tectonics may have started more than 4 billion years ago — much earlier than scientists had believed, ...
