Slashdot Mirror


User: j-beda

j-beda's activity in the archive.

Stories
0
Comments
1,996
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 1,996

  1. Re:While the freezer probably isn't the best way.. on Homebrew Air Conditioning for Under $25 · · Score: 1
    >>>Put salt in the water. The ice and chilled water mixture gets colder with salt.

    >>Errggh.... no it doesn't :}

    >Errgh.. yes it does.

    Adding salt however would porbably not change the total amount of heat that could be removed from the air much though. Basically you are taking heat from the room and dumping it into the water/ice mixture which is then being ejected. Anything that you can do to get the ejected water temp to be as close as possible to the room temperature will improve efficiency - longer cooling pipes, more airflow, etc. Dumping in salt will drop the solution's temperature by causing the ice to melt faster (heat is absorbed in the phase change), and perhaps the colder brine will absorb heat from the air slightly easier, but the total heat absorbing capacity of a chunk of ice from the freezer is unaffected by the addition of salt.

  2. Re:solar water heater on Homebrew Air Conditioning for Under $25 · · Score: 1
    You hook the solar water output up to the on-demand-heater input (a high quality one with a temperature sensor that controls the water temp output), and you have a system that delivers the hot water at a constant minimum water temperature - when the solar water is hot enough, the on-demand-heater doesn't do a thing. Up here in Canada, even in the snowy winter, one can provide 50% or more of your hot water from a solar source, or so I am told by my neighbours with a solar water system.

    Most solar water systems just feed into a standard water heater and use that to "top up" when needed, the on-demand-heater is just a bit more efficient to use.

    Probably, to prevent overheating and dangerously hot water in the sunnier times of the year, one should install a cold-water-mixing valve to make certain that the hot water delivered by the system never gets scalding.

    See Home Power Magazine for lots of this info - free download of the latest issue in PDF - a great mag.

    See also Dilbert's Ultimate Home by Scott Adams for lots of cool home design decisions for the inner geek.

  3. Re:Gimme Back My Bullets on Kazakhstan's Spaceship Junkyard · · Score: 1
    What is to be implied from this? If a psycho stabs me, is the knife's manufacturer or seller to blame?

    I see that some doctors in the UK are calling for limited sales of long pointed kitchen knives (suggesting that a long blunt ended knife is as useful in the kitchen.) Suposedly, smaller pointed kitchen knives do not pose as much stabbing danger but provide the cook all needed food-stabbing potential. They say that long pointed kitchen knives make up a significant fraction of dangerous wounds and are often the result of crimes of opportunity/passion so eliminating the easy availability of the weapon would have significant benifit.

    I wonder if studies such as this might increase potential liability claims for knife makers.

  4. torrent on website on Seeing Around Corners With Dual Photography · · Score: 1

    I sent them an email note and now they have a torrent posted on the website.

  5. Re:Why don't the editors link to mirrordot? on Seeing Around Corners With Dual Photography · · Score: 1
    kudos for you :)

    Naw, I'm just "karma-whoring".

    Someone else posted the torrent and I'm just linking to it throughout the discussion whenever it seems appropriate. I need to remember to put "torrent" in the subject so that people browsing just the subjects can find it...

  6. torrent on Seeing Around Corners With Dual Photography · · Score: 1

    Because mirrordot can't handle it either? Maybe this torrent will work?

  7. torrent on Seeing Around Corners With Dual Photography · · Score: 1

    Here is a working torrent.

  8. Re:ARTICLE CONTENTS - torrent link on Seeing Around Corners With Dual Photography · · Score: 1

    There is a torrent here.

  9. torrent on Seeing Around Corners With Dual Photography · · Score: 1

    For what it is worth, here's a torrent.

  10. Re:University of Virginia Mirror to Video[disable] on Seeing Around Corners With Dual Photography · · Score: 1

    This torrent seems to be working.

  11. Re:Slashdotted already! Google cache here. on Seeing Around Corners With Dual Photography · · Score: 1

    Here is a torrent that might be useful.

  12. Re:buh-bye server... on Seeing Around Corners With Dual Photography · · Score: 4, Informative

    Here is a working torrent.

  13. Re:Why don't the editors link to mirrordot? on Seeing Around Corners With Dual Photography · · Score: 4, Informative

    Because it can't handle it either? Maybe this torrent will work?

  14. Re:Blame The Slashdot Editors on Seeing Around Corners With Dual Photography · · Score: 1

    This torrent seems to work

  15. Re:Cut, not Slash/Slice on How Lightsabers Work · · Score: 2, Informative
    The Discovery Channel up in Canada back around the time of episode one did a bunch of short bits on how Star Wars tech might actually work. They interviewed a friend of mine, laser expert Dr. Marc Nantel from Photonics Research Ontario (PRO), for the bit on lightsabers. That piece generated a huge amount of viewer response, so they brought Marc back for a follow up, and a bunch of other on screen stuff unrelated to Star Wars. It looks like there now is a bit more on other possible mechanisms on their site.

    Marc says that after this interview, he got a lot of email at PRO from around the world asking about how to build a lightsaber. Apparently some European Star Wars fanzine stated that he was actually researching building an actual working light saber. Lots of people sent him notes asking for details, and some were very disappointed to learn that he was not pursuing such research.

  16. Re:Is it April Fools Day? on Offshoring to a Ship in International Waters · · Score: 1
    The USA is one of the few places to tax non-residents. A German living outside of Germany does not have to file any tax forms with the German government. A citizen of the USA has to file tax forms with the IRS no matter where they reside. This is a real pain in the keester, let me tell you.

    You are correct that for most non-resident citizens of the USA, tax treaties and similar provisions provide for rules that do not result in double taxation. Most places have higher income tax rates than the USA, so there is usually no tax advantages to living elsewhere. For places that have lower tax rates than the USA, I am not certain what typically happens. If the IRS rules allow you to "exclude" the foreign income (as they do for Canadian income for example), then you are lucky. If you cannot "exclude" that income due to a lack of a tax treaty or similar provisions, they you will end up needing to cut a cheque to the IRS.

  17. Re:Babies are Hard, Despite their Skull Softness on The Baby Bootstrap? · · Score: 1

    No arguement from me - I was just pointing out that vision or hearing were not necessarily necessary. On the HK side, she lost her sight/hearing at an early age (about 18 months according to here), so it could be agured that the early sensory input was needed, but I think there are a number of "blind from birth" counter-examples.

  18. Re:Abohrrent Press Vacuum on U.S. Blogger Breaches Canadian Publication Ban · · Score: 1
    As you might imagine, the entire population of 30 million is not available. The local population in the Montréal region is significantly smaller.

    The point is, it is much easier to gain a large pool of "untainted" jurors with a publication ban. I don't know if I agree that a publication ban is in the best interests of justice and public knowledge, but it certainly does not seem particularly onerous to me. Suggestions that it is simple to ensure that those who have been exposed to media presentation of evidence are unbiased is a bit naive in my opinion.

  19. Re:Abohrrent Press Vacuum on U.S. Blogger Breaches Canadian Publication Ban · · Score: 1
    Sure, but it still leaves you with a significantly smaller pool of jurors to choose from if everyone and their dog has been discussing the testimony. Holding off on the publication of the testimony for a short time does not seem particularly unreasonable, and there seems to be little public opposition to the ban.

    I suppose the next time this type of thing comes up there will be more incentive to limit any access to the testimony - no reporters, and no public access to the inquiry. That would be a shame.

  20. Re:Babies are Hard, Despite their Skull Softness on The Baby Bootstrap? · · Score: 1

    The fact that there are cases of people who are blind or deaf (or both?) from birth, who do manage to learn a whole bunch does indicate that neither is completely necessary for the developement of intelligence could be grounds for "hope".

  21. Re:Anybody with half a clue... on Open Source Tax Products? · · Score: 2, Informative
    The eFile IRS page has links to free services for electronic filing - many with no limitations on income. I understand that many states have links to similar free services for state taxes.

    For Mac users, MacInTouch has info about these services as well as info about US and Canadian tax software for the Mac.

  22. Re:CFLBs on How Are You Conserving Energy? · · Score: 1
    've had 5+ CF bulbs die within a year or two.

    I just write the date and lifespan (and store) on the bulb base with an indelible marker, and if they give up the ghost too quickly, I bring them back. Most big-box places don't even require a receipt if you are exchanging them.

    I also try to get the 10,000 hour bulbs rather than the 5-6,000 hour bulbs, but the 10,000 hour bulbs are getting more difficult to find.

  23. Re:When the Revolution Comes They'll be at the Wal on Battlestar Galactica Available for Download · · Score: 1

    I would have thought that the porn industry had solved this technical type of problem by now. Partner up with "wet&wild inc." and use their existing infrastructure.

  24. Re:The Savings on Screw-in LED Floodlights · · Score: 1
    What about the cost of spending $80 now, instead of keeping it invested in something?

    Don't forget the taxes on the investment income! But you are probably correct that we can treat the cost of an incandescent as essentially $0.

  25. Re:Time Value Of Money on Screw-in LED Floodlights · · Score: 1
    if you consider the time-value-of-money, it actually favors the option with the lower initial cost

    It can get a bit more complicated in that investing money in a technology that will decrease your future costs, is not exactly equivalent to investing money that will provide future income. Future savings are sort of like tax free income in that if you save a dollar in the future you will be a dollar richer, whereas if you earn a dollar in the future you will need to pay taxes on that dollar, which can amount to a significant fraction of that profit.

    Business which can deduct some of these expenses from their income of course have a different calculation to make.

    Home Power magazine had a fairly good article on this type of thing a few months back (or maybe last year?) where the author concluded that investing in compact flourescents was a better return than the stock market, while LEDs were much less of a good investment. Similar articles in the past have shown that the really best investment one could make with a few thousand dollars would be to install a solar hot water system to supliment whatever hot water system you currently have - with returns on investment of 15-30% all tax free... but I digress.