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

 



Forgot your password?
typodupeerror

Comment Re:navigation maps (Score 1) 265

This may surprise you, but the problem of updating charts has been encountered before. And solved. In the early nineteenth century by Admiral Beaufort. The Hydrographic Office issues weekly 'Notices to Mariners' which list the changes to be made to charts. These include shifting sandbanks, new navigational bouys, new survey data and yes, new wind turbines. As far as navigation is concerned it's not a new island it's a new wind turbine. If the captain was unsure of his position the sight of one (and it would be visible at some distance) would give a clue as to his position.

Comment Re:Speed limiters already on HGVs / trucks? (Score 1) 859

Yes they do. Travelling on motorways in the cab of an HGV at 56mph is a surreal experience. Everything happens very slowly. If an empty, powerful truck finds itself behind a weak, full truck going up hill it'll still overtake so 2 of the 3 motorway lanes become slow lanes. You do find them overtaking each other on the flat, usually because one limiter is set slightly higher than another.

Comment Re:Transformers are efficient (Score 1) 221

But in a transformer the coils are very close to each other, and are wrapped around the same lump of iron. With the devices the coils and cores are separate. Magnetic fields decay exponentially so even a small gap will reduce the transmitted power by a fair bit. There seems to be various proposed methods to get around this problem, but none of them seem to be significantly better than the others.

Interesting point about electronics reducing the idle currents, as this would be another issue.

Programming

Submission + - Amazon.com Suing Statsaholic

SwollUG writes: Amazon.com offers several highly innovative and useful web services (S3, EC2, and Mechanical Turk, to name a few), but do troubled waters lie ahead for users of these services? ZDNet's Alan Graham has the scoop on Tim O'Reilly's confrontation with Jeff Bezos about a lawsuit filed by Amazon's Alexa against Statsaholic, a popular web traffic comparison site built on the Alexa API. GigaOm's Om Malik has referenced this as a harbinger of the end of Web 2.0. Is this what happens when your Amazon-based website starts becoming popular? Say it ain't so, Amazon!

Slashdot Top Deals

It seems that more and more mathematicians are using a new, high level language named "research student".

Working...