Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×

Comment: Re:chinese anti-satellite lasers (Score 1) 245

by RightwingNutjob (#49160265) Attached to: 20-Year-Old Military Weather Satellite Explodes In Orbit
Whoops. But with your point about the coating, I'm only off by a factor of ten...which kind of puts the laser within the realm of the possible. The next item on the agenda: how much power do we really need on target to make it overheat given that it's designed to cycle between daylight and night, even if it is in whatever sun synchronous orbit it's in.

Comment: Re:chinese anti-satellite lasers (Score 2, Interesting) 245

by RightwingNutjob (#49159931) Attached to: 20-Year-Old Military Weather Satellite Explodes In Orbit
Uh huh. Do some math for me. A 1um laser fired out of a 1m aperture spreads to an 800m circle at an altitude of 800km. If you want to heat something 1m across with 1W, you need to have a total power output of 500kW continuous from the laser. The US Navy's laser program expects to top out at about 100kW (http://www.wired.com/2011/02/unexpectedly-navys-superlaser-blasts-away-a-record/). And you're telling me someone out there is firing a 500kW laser into space from a secret mountain lair. Possibly one that launches capsule-eating rocketships too? (http://en.wikipedia.org/wiki/You_Only_Live_Twice_%28film%29)

Comment: No obvious reason (Score 4, Informative) 245

by RightwingNutjob (#49159879) Attached to: 20-Year-Old Military Weather Satellite Explodes In Orbit
What no obvious reason? Either the batteries overheated and exploded (fuel and oxidizer packed close together and sitting for 20 years) or the fuel tank vapors exploded on their own (tends to happen with monopropellant--no need to additional oxidizers, just a random injection of energy). Russian rocket bodies used to explode in orbit from time to time from fuel vapors (undesired bipropellant mixing) until they were convinced to burn off all their spare fuel after they deployed their payload into its orbit.

Comment: Re:Xfce 5 should be based on Qt. (Score 2) 88

by RightwingNutjob (#49158681) Attached to: Xfce 4.12 Released
I'm sure there are, each with their own quirks and "language extensions." Kinda like C++11. A program that grew up around gcc's implementation needs to be ported to microsoft's implementation, even if it links in no libraries. Example: __asm__ vs asm(...); Neither is in the language spec, so both are extensions, and surprise! linux kernel code can't just be copy-pasted to windows kernel code.

Comment: Re:Corporation != People (Score 1) 388

Except that the emotional BS about pushing grandma off a cliff in her wheelchair and the soldiers and the retirees came after and, as usual for lefty "counterarguments" about fiscal discipline, failed to acknowledge the core point about 47% of people not having skin in the game on federal spending.

Comment: Re:Corporation != People (Score 1) 388

Doesn't matter. The point is they have no skin in the game wrt federal taxation, and given that the federal government has gradually crept up to about 25% of American economic activity and is 1.5 years worth of GDP in the hole, the fact that nearly half the people have nearly half the vote but zero financial obligations is unhealthy and potentially dangerous not just to the other half.

Comment: Re:Corporation != People (Score 1) 388

Peo[le have freedom of association and freedom of speech. The 1st amendment actually lumps them together as peaceable assembly. Corporations are a peaceable assembly of board members and/or shareholders. Therefore they have speech and property rights like people, and tax burdens like people.

No line available at 300 baud.

Working...