Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×

Comment Re:Why speed only a little? (Score 4, Insightful) 475

Come now. What percentage of people on the road actually have any situational awareness? They're not looking around to track voids in traffic should they need to change lanes in an emergency. They're not looking downstream to see that accident half a mile away and traffic backing up. They're watching no further than the brake lights in front of them. Even if they are trying to pay attention, it takes a hell of a lot of concentration and practice to constantly track a dozen cars around you in all directions, and a hell of a lot more to anticipate movements when those cars leave line of sight. This sort of thing is trivial for a computer.

As for "self", are you referring to the current state of the car? Surely autonomous control tied into your vehicle's data bus with direct access to engine sensors, accelerometers, gyroscopes, suspension deflectometers, and all manner of other equipment would have a much better chance of assessing the current state of the vehicle than the driver.

Comment Re:Left or Right? (Score 2) 475

The US has no hard limit. If you're breaking the speed limit, you're breaking the speed limit, and it's the discretion of the office how bored/lazy/behind_on_quota they are as to whether you get pulled over and ticketed. The fact that the UK has actually codified this is absurd. Why not just bump the signage by that much, and make the signs themselves the hard limit?

Comment Re: There we go again (Score 2) 383

The point he was making is that with proper procedure, a hash could never be attacked offline. As soon as the hash database were compromised, all hashes contained therein would be invalidated. The attacker could brute force that database to their heart's content, and no valid passwords would ever result from it.

This of course assumes the administrators are paying close enough attention to notice in short order when the database has been compromised, and that all users define a secondary means of contact through which to send a reset password. It also ignores the issue that most users use the same username and password across multiple sites, such that a pair compromised on one site and invalidated as described would still be valid on another site.

Comment Re: Would YOU be able to sleep in space?? (Score 1) 106

For the first couple of seconds you are in a true freefall, relatively unencumbered by air resistance, accelerating.

You're already experiencing significant drag when you jump out of that aircraft at 100 knots. You're only in something closely resembling freefall when you jump from a balloon, or base jump.

Comment Re:Why bother? (Score 2) 113

Florida is a good thousand miles away from the Texas launch facility. It would take more fuel to continue downrange and land in Florida than it would to turn back and land in Texas. Florida might be a good landing site for a recoverable Falcon Heavy center stage, but they're likely only around 100mi down range by first stage cutoff.

Comment Re:Oh so close... (Score 2) 22

The difference between something able to reach 100km, and something able to reach that altitude with enough energy to make it a quarter of the way around the world, is significant. They are really not close at all to being a useful transportation mechanism.

Comment Re:Silly season much (Score 1) 131

Officer Zau kicks over the wood stove, lifts open a patch of the tile floor and shines his light into the darkness below.

Officer Zau unholsters her Type 15 pistol, takes aim at Han and puts her finger on the trigger.

I think there's something more interesting going on here than simple population control...

Comment Re:Subject bait (Score 4, Interesting) 379

Stay on topic and discuss the technical aspects of the missile system, at least that is what should be discussed here.

The article itself hardly touches on the technical merits of the missile system. It mentions how there are hardly any public releases of technical aspect to discuss, and that the handful of images of the system in operation show intercept angles that are highly unlikely to be successful. The core argument of the article is that the whole situation is nothing more than a PR campaign on both sides.

Hamas fires inaccurate artillery rockets, unlikely to actually hit anything, at Israel, under the hopes Israel counter-attacks and causes lots of collateral damage that looks bad to international press.

Israel produces a defense system and makes precision counter-attacks to prove their technological and military prowess, and restraint in its use, to international press.

Comment Re:Dual or quadricopters (Score 1) 103

Because they don't scale up.

http://en.wikipedia.org/wiki/Square-cube_law

Smaller rotors means lower mass flow rate, requiring higher flow velocity to produce the necessary thrust. Higher flow velocity means higher power requirements. The larger your aircraft, the more difficult it becomes to produce the necessary amount of power to remain airborne.

Slashdot Top Deals

God may be subtle, but he isn't plain mean. -- Albert Einstein

Working...