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


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Comment Re:"a fraudulent religious organization" (Score 1) 498

I will shamelessly plug my church which has a long tradition of liberal/atheist members. Services pull from various religious traditions as well as modern authors. The wisdom of words is not limited by their source. We may not be trying to debunk religion, but we are trying to sift out and use the best of it. Stop by if you are passing through Grand Rapids, MI.

Comment Re:AC vs DC (Score 1) 468

You are right that the type of power doesn't matter (AC/DC), but the voltage does NOT dictate the gauge of wire needed. It can dictate the insulation used, however most wire I have seen is rated to 600V. The original post was probably correct - in this application - that the DC power distribution will need larger gauge wire. The AC/DC power supply normally in a computer is not terribly inefficient, so the DC power supplied to the computer will need to supply almost the same number of watts as the AC circuit. Unfortunately the DC power is supplied at a much lower voltage so the current must be raised to compensate for this. Of course it is possible that they are distributing high-voltage DC power (maybe ~250V?) and including a DC/DC power supply in each computer. This would let them run smaller gauge wire, but increase the cost of the components in the computers. Additionally it would eat into the efficiency of the system, which would seem to be the biggest benefit of a central AC/DC conversion. As for the trains, I would be surprised if they were running on low voltages. Copper is expensive, and thicker wire will also make a motor less efficient for a given frame size.

Comment Re:Great Page Turner for Miscreants ! (Score 1) 375

Was that recipe the gasoline and styrofoam or gasoline and dish soap? I can see how not adding enough of the thickener to the gasoline could easily leave a lot of fumes hanging around. It was really fun watching the foam disappear into the puddle of gasoline. Only tried it once (probably 15 years ago...), but kept my eyebrows intact. There were plenty of miscreant how-to manuals in the late 90's. I had a lot of fun comparing all of the slightly different instructions on making nitroglycerin. I was (thankfully) never dumb enough to try synthesizing it...

Submission + - Battery Produces Energy Continuously Since 1950 (ibtimes.com) 1

An anonymous reader writes: The "Dimitrie Leonida" National Technical Museum from Romania hosts a weird kind of battery. Built by Vasile Karpen, the pile has been working uninterrupted for 60 years. "I admit it's also hard for me to advance the idea of an overunity generator without sounding ridiculous, even if the object exists," says Nicolae Diaconescu, engineer and director of the museum. Half a century ago, the pile's inventor had said it will work forever, and so far it looks like he was right. Karpen's perpetual motion machine now sits secured right in the director's office. It has been called "the uniform-temperature thermoelectric pile," and the first prototype has been built in the 1950s. Although it should have stopped working decades ago, it didn't.

Comment Re:Floppies (Score 1) 558

"... And now for some reason every third sheet of steel gets cut in the shape of a giant c*** and balls."
Sorry, just imagining what a virus would want to do on a CNC machine. Although, if I ever get disgruntled enough I could have the laser cut an 8ft c*** out of 1/4in steel as a parting gift. Maybe I should get the G-Code together for that...

Comment Re:And if SCO _did_ get it... what? (Score 4, Insightful) 286

There has been no examples exposed by SCO or anyone else that would indicated that Linux has anything to fear from the holder of UNIX copyrights, whoever that may be. If there were any code that infringes on a copyright then that functionality can be re-coded from the specifications, eliminating any infringement.

Comment Re:How long ago was this? (Score 1) 427

Curriculum varies widely by school. I finished the Calculus course my high school had as a Sophomore (in 1994) and before I graduated they had removed that class entirely. Nothing past the Pre-Calc level.

This was due to (or, at least, at the same time as) the phasing in of the dreaded "Chicago Math" program. The teachers got lazy and the students were bored.

Slashdot Top Deals

An algorithm must be seen to be believed. -- D.E. Knuth