Search found 2257 matches
- Sat Oct 10, 2020 6:30 am
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 174
- Views: 114904
Re: Z-Pinch Renaissance
It is true that superheating water and ejecting it will give us the lowest ISP (in respect to superheating H2 as example), but it has a number of inherently interesting advantages: ... Anhydrous ammonia is an interesting comparison. A bit harder to store than water, but respectable density can stil...
- Tue Sep 22, 2020 8:33 am
- Forum: News
- Topic: NASA reports on something called lattice confinement fusion
- Replies: 7
- Views: 2505
Re: NASA reports on something called lattice confinement fusion
Sounds like a return of Pons Fleischmann cold fusion.
- Thu Oct 31, 2019 2:28 pm
- Forum: News
- Topic: Richard Nebel's Tibbar Plasma Technologies
- Replies: 3
- Views: 5925
Re: Richard Nebel's Tibbar Plasma Technologies
To my eye it all reads like someone takes startrek too seriously.
- Tue Oct 22, 2019 2:08 am
- Forum: News
- Topic: Aluminum-air battery
- Replies: 7
- Views: 7461
Re: Aluminum-air battery
Maybe Al2+6H20 => 2Al(OH)3+3H2 in a fuel cell that can deliver electricity, with the H2 sent to a second energy conversion stage?
Re: EMC2 news
By my recollection, the potential well was vital to the favorable energy distribution, ion vs electron, for aneutronic fuels. I also recall speculation that a well could be created without electron injection by differential leakage through the cusps. Of course then you need some other means of heati...
Re: EM Drive
Even then, we need an arrangement where we can be confident it isn't photon recirculation in the feed line.Skipjack wrote:I wont believe that this thing works until I see repeatable and reproducible thrust numbers higher than a photon rocket.
- Thu Jun 27, 2019 6:58 am
- Forum: General
- Topic: Extraterrestrial colony companies
- Replies: 44
- Views: 43680
Re: Extraterrestrial colony companies
Of course if you import too much gold, the price of gold crashes. As has been seen when Spain imported gold plundered from the Americas, and the California gold rush.
- Mon Jun 03, 2019 5:11 pm
- Forum: General
- Topic: Crime and Punishment: Oklahoma (& Texas) style!
- Replies: 983
- Views: 249018
Re: Crime and Punishment: Oklahoma (& Texas) style!
Barrycade, as usual, speaks nonsense.
- Fri May 31, 2019 10:38 pm
- Forum: News
- Topic: Direct O2 evolution in collisions of carbon dioxide with surfaces
- Replies: 7
- Views: 9611
Re: Direct O2 evolution in collisions of carbon dioxide with surfaces
How much does it erode the impacted surface? And I presume ambient pressure has to be very low, of the O2 is likely to quickly react with the released carbon.
- Sun Apr 21, 2019 5:23 am
- Forum: General
- Topic: Extraterrestrial colony companies
- Replies: 44
- Views: 43680
Re: Extraterrestrial colony companies
Blackbody radiation scales with the 4th power of temperature. So a 30% reduction in incoming solar energy gives less than a 9% drop in temperature. Not sure I follow your calculations. Thought it was heat loss by radiation was proportional to the 4th power of the temperature difference. Nope, black...
- Fri Apr 19, 2019 12:28 am
- Forum: News
- Topic: US navy patents exotic propulsion aircraft
- Replies: 5
- Views: 10669
Re: US navy patents exotic propulsion aircraft
The F-302 is supposed to be ultra top secret. 

- Fri Apr 19, 2019 12:23 am
- Forum: General
- Topic: Extraterrestrial colony companies
- Replies: 44
- Views: 43680
Re: Extraterrestrial colony companies
Blackbody radiation scales with the 4th power of temperature. So a 30% reduction in incoming solar energy gives less than a 9% drop in temperature. On the other hand, if I've got my calculations right, a planet twice the distance from the star would have a roughly Earth like temperature.
- Tue Apr 09, 2019 1:43 am
- Forum: News
- Topic: ENN Fusion Engine Challenge (FUGINE)
- Replies: 3
- Views: 8578
Re: ENN Fusion Engine Challenge (FUGINE)
"Climate change", second sentence in the introduction. Well, there goes their credibility. Fusion energy does not need a bogus climate crisis to justify it.
- Tue Apr 09, 2019 1:37 am
- Forum: News
- Topic: Thermal battery with 6-8 times the energy density of lithium
- Replies: 10
- Views: 13812
Re: Thermal battery with 6-8 times the energy density of lithium
I didn't see Rossi's picture in the article, but a thermal generator with only 3 moving parts? Suggests thermoelectric generator with efficiencies ranging from 6% to 15%, that doesn't seem like a very good deal to me. I've read of Stirling-electric generators with a grand total of 2 moving parts, n...
- Tue Mar 26, 2019 5:52 am
- Forum: General
- Topic: Sell The Whitehouse to Trump
- Replies: 993
- Views: 311166
Re: Sell The Whitehouse to Trump
Build a wall, steal a wall, who would have thunk it https://www.facebook.com/thedailyshow/videos/1164893220345695/?t=2 :lol: :lol: And...that's an argument for not building a wall? Or one for building a wall along with more border guards/troops to reinforce it and help keep it secure? If a bank get...