Forgot your password?
typodupeerror
Science

Cosmologists Show Negative Mass Could Exist In Our Universe 214

Posted by Unknown Lamer
from the beam-me-up dept.
KentuckyFC (1144503) writes The idea of negative mass has fascinated scientists since it was first used in the 16th century to explain why metals gain weight when they are oxidized. Since then, theoretical physicists have shown how it could be used to create exotic objects such as wormholes and the Alcubierre warp drive. But cosmologists' attempts to include negative matter in any reasonable model of the cosmos have always run into trouble because negative mass violates the energy conditions required to make realistic universes with Einstein's theory of general relativity. Now a pair of cosmologists have found a way around this. By treating negative mass as a perfect fluid rather than a solid point-like object, they've shown that negative mass does not violate the energy conditions as had been thought, and so it must be allowed in our universe. That has important consequences. If positive and negative mass particles were created in the early universe, they would form a kind of plasma that absorbs gravitational waves. Having built a number of gravitational wave observatories that have to see a single gravitational wave, astronomers might soon need to explain the absence of observations. Negative mass would then come in extremely handy.

Comment: Re:Primaries themselves are bullshit (Score 1) 932

by sanosuke001 (#47215741) Attached to: House Majority Leader Defeated In Primary
Exactly, allow anyone who meets certain criteria to run (so we don't have 300 names on a ballot) but do not force only 1 Republican, 1 Democrat, 1 Green, etc. Also, stop allowing money contributions; public funds only so everyone is on the same level playing field. Hell, stop listing their party affiliation altogether; list their viewpoints on major key issues (a touchscreen so you can scan through each candidate would be nice but a reference packet you can borrow would work as well). We should be doing everything we can to limit people just dumping money into a race and washing their competitors out of the public consciousness, attacking to excess (like Cantor tried to do), or not being able to effectively run against someone for not being rich as well as not allowing people to just walk in, search for the one R/D/G, choose blindly, then say "good enough." People should be informed and we shouldn't be helping them be lazy.

Comment: Separate Hardware from Services (Score 2) 286

Just separate each companies' hardware from its services and make two companies, the hardware side being a Title II Common Carrier. Then, anyone, including the former companies' services division can now buy wholesale access and sell their services.

The infrastructure is expensive and it isn't feasible for more than one or two companies to install lines to every home. Have one utility company install the lines and sell to the services companies. It should have been done years ago.

Comment: Free Hardware? (Score 2) 394

by sanosuke001 (#46930505) Attached to: Richard Stallman Answers Your Questions
Why did he keep assuming that the free hardware questions referred to "documented hardware" and not free hardware as he stated? When I think of free hardware I think of free designs that I can build myself with the right tools. In effect, it is documented hardware by default. Why assume the commenter didn't know what they were talking about? It seemed kind of mean-spirited.

The number of computer scientists in a room is inversely proportional to the number of bugs in their code.

Working...