Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Comment Re:Rotation velocity (Score 2) 34

It would be measuring whatever is reflecting or generating the light being analyzed. The cloud deck or whatever. The Doppler effect measures velocity, not RPM. The 28,000 is probably the maximum value, so it would be how fast the clouds at the equator are going east. The surface of the Earth rotates at the equator at 1400 mph.

Comment Re:re; You Should? (Score 2) 600

N=1? You believe in Plate Tectonics, even though there is 1 Earth, but not the Big Bang because there is only 1 Universe? There are many reasons that lead to the conclusion of the Big Bang. The Doppler effect and Fraunhofer lines lead to the conclusion that everything in the Universe is flying away from our Galaxy. They had to start somewhere. If everything was once in one place, it would have been very hot, and you could predict that temperature. If the universe was that temperature at one time, the black body radiation produced should still be around. We searched for it, and found it exactly as predicted. Once you can predict something based on a hypothesis, and then confirm the prediction, you are on your way to a valid theory. Many more experiments have been conducted, refining and improving the theory.

Comment People guard against old threats (Score 1) 169

People are used to guarding against security threats, but are always defending against old ones. By the time you get everyone trained in defending the threat, the attackers have already moved on to a new one. The only way to defend yourself is have a small group of people who can anticipate or react to the ever changing threat and have them defend everyone else. Unless you are primarily interested in security, they will never focus on preventing new attack avenues.

Slashdot Top Deals

The question of whether computers can think is just like the question of whether submarines can swim. -- Edsger W. Dijkstra

Working...