Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment: Re: Atmosphere study is in NASA's fucking 1958 cha (Score 1) 162

by SuricouRaven (#49604805) Attached to: NASA Gets Its Marching Orders: Look Up! Look Out!

Space is actually very, very hot - the very few atoms you find floating around have a great deal of kinetic energy. If you could create a perfectly non-radiating/reflective material and leave it in space, it would eventually get hot. This doesn't happen because the density is so low: The heat transfered to an object by conduction is a negligable fraction of that lost to radiation. Also, anything with water in will freeze in seconds due to evaporative cooling: At near-vacuum, just about everything is above the boiling point.

Comment: Re:Ha! (Score 1) 162

by SuricouRaven (#49604779) Attached to: NASA Gets Its Marching Orders: Look Up! Look Out!

Colonisation is unrealistic today. The technology is decades away from practicality at least, and the expense of establishing a long-term colony is such that it may well be the single most expensive project in all of human history. Yet the prospects are so exciting - how long as it been since there was a true age of exploration? We can't plan colonisation today, but we can lay the first stones of the foundation that a future generation can build upon.

Comment: Re:He's also an interesting candidate for this (Score 1) 329

by SuricouRaven (#49602495) Attached to: Bernie Sanders, Presidential Candidate and H-1B Skeptic

The free market is ultimately self-destroying - a monopoly is a very stable situation. Once one company achieves dominant status there are all sorts of underhanded tricks they can use to beat back any smaller competitors. Exclusive deals at retail or on raw materials, selling at a loss to undercut a competitor on price until they go out of business. If you don't limited that freedom a little with regulation, it ends up being not free at all.

Comment: Re:Make me an offer (Score 1) 213

by SuricouRaven (#49599027) Attached to: Want 30 Job Offers a Month? It's Not As Great As You Think

One of the jobs I applied for years ago even got me to the interview - but I learned later that the whole thing was a sham. They promoted someone internally, and had always intended to, but there was some legal requirement that they consider external applicants equally. So they interviewed a bunch of outsiders to put on a show and appear to comply with the law.

Comment: Re:Can't wait to get this installed in my house (Score 1) 502

by SuricouRaven (#49594619) Attached to: Tesla Announces Home Battery System

I did a bit of research.
http://www.otherpower.com/imag...
A lead-acid being used only near top-up charge level can reach 50% efficiency - but that's only if you maintain it near full charge, and only dip into it a little bit, as they are least-efficient at charging when almost full. If you're using it in a deeper cycle the efficiency is much better, easily reaching 90%. You have to really abuse it to hit 50% efficiency, but it is concievably possible for a poorly-designed system, perhaps one that performs only light load-redistribution as a secondry function while intended for long-term backup power with corresponding capacity.

In English, every word can be verbed. Would that it were so in our programming languages.

Working...