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User: vyvepe

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  1. Re:Saftey & Planning on Students' Experiments To Fly By Glider To the Edge of Space · · Score: 2
    An experienced glider pilot has one more vairometer to use - his own posterior. One can feel speed changes in it :) Also one does not see how air moves, the pilot can feel whether the plane is nearing the turbulent region. This together with general knowledge about thermal ans waves helps a great deal.

    No idea why Bigelow screwed up. Gliders are built for turbulent weather. When one is targeting thermals then it is the turbulent parts of the atmosphere the plane is heading to. Stall speed is typically about 40 knots and Vne (top speed) is about 120 knots at low altitudes. The range is quite big. And it is not a big deal to get below the stall speed if you have enough height. You just lose part of that height. I experienced stall in a glider myself a few times. Not a big deal. On the other side crossing your Vne is almost as good as trying to kill yourself real hard. It is not easy to fly when your wings break off :) Whatever Bigelow did, he should try not to cross his Vne. Crossing Vne was probably a consequence of something else though.

  2. Re:Saftey & Planning on Students' Experiments To Fly By Glider To the Edge of Space · · Score: 4, Informative

    They do not want to catch a raising column of hot air (thermal). They want to catch a wave downwind of a mountain. The waves reach considerably higher than the mountain which generates them. Thermals are typically very bumpy. Waves are typically extremely steady. Only their middle part (the rotor) is bumpy but you can avoid that. This should be quite a steady flight.

  3. Re:Family member's WIN computer got locked out on Windows 10 Now a 'Recommended Update' For Windows 7 and 8.1 Users (betanews.com) · · Score: 1

    Windows is becoming less and less relevant for gaming. Most people game on smartphones/tablets or consoles and SteamOS is gaining more support by the day.

    As for as the number of players you are probably right. But most gaming revenue is still on PC: http://arstechnica.com/gaming/...

    But the trend indicates the mobile platforms will eventually prevail.

  4. Re:Go AMD! on Samsung Begins Mass Production of World's Fastest DRAM (hothardware.com) · · Score: 1

    I used both AMD and nVidia cards and I did not have driver problems with any of the cards. But nVidia hardware did die after about a year :-/

  5. price/performance ratio on What's In a Tool? a Case For Made In the USA (hackaday.com) · · Score: 1

    Who cares where it is produced? Price/performance ratio is important.

  6. Re:VR on LG Announces "Super UHD" TV Lineup (digitaltrends.com) · · Score: 1

    And a hurting neck from the bulky VR headset!

  7. remove the info if you mind it on What Your Photos Know About You (itworld.com) · · Score: 2

    for a in *.jpg; do convert -strip "$a" "$a:r.clean.$a:e" ; done

  8. Re:"Open == Secure"? on Open Source Code Isn't a Warranty (opensource.com) · · Score: 1

    Closed source, commercial software is written by people who are paid to do it. Software that people are paid to written more often includes the boring, not-fun parts like testing, documentation, and auditing. Therefore closed source software has a higher chance of being audited.

    Why do you think a car company would not audit open source software it is using in their cars? They can get publicly ridiculed for low quality of their code. Would you buy a car from a company which was shown to have crappy and insecure code in their cars? This is not like a PC which you can reboot and all is fine. And why do you think a company which does not audit its open source code would audit its closed source code?

    We're both just constructing arguments that may or may not be true. My point is that those arguments are irrelevant. A given piece of software either has or has not been audited.

    I agree with you. My point is that in the case of a car software the openness of the source code would give the company even more incentives to audit it yourself compared to a closed source code. And moreover there are people who are really interested in cars and which would definitely look at the code. What about all the rodhoders?

    I mean you want to move experience from simple PC software to car software. I do not think this is valid.

  9. Re:"Open == Secure"? on Open Source Code Isn't a Warranty (opensource.com) · · Score: 1

    They're both wrong.

    Open == You can audit it if you want. It's absolutely no guarantee that anyone ever has.

    There may not be a guarantee but there is a good change it is statistically true. There exists a group of people who may want to audit a car software and they can do it only when it is open. Therefore open source software should have a higher chance of being audited.

  10. muzzle velocity comparison with firearms on Guy Creates Handheld Railgun With a 3D-Printer (engadget.com) · · Score: 5, Informative

    AK-47: 715 m/s

    .44 Magnum: 360 - 450 m/s

    Black powder musket: 120 - 370 m/s

  11. Re:Given the hype around 3D printing ... on Startups Push 3D Printers As Industry Leaders Falter · · Score: 2

    I just don't find enough uses for it to justify the floor or bench space for the machine. In subtractive manufacturing where one takes away material I can work in metal, plastic, and wood. I can cut, plane, sand, shave, drill, tap, or die-cut, and if I pick up one of those tabletop mills, I could mill and otherwise create channels, and these can all be done in three different materials.

    The problem is that a cheap 3dPrinter can do shapes which would require 5-DOF CNC. These are very expensive. So you can use only plastic in a 3d printer but you can do very complicated shapes. With a cheaper 3 DOF CNC you can use also wood or metals, but the shapes you can produce will be simpler.

  12. Re:Wow! on Intel's Skylake Architecture Reviewed · · Score: 1

    Don't forget it isn't just raw watt savings. You also have the heat dissipation of that heat, and then the additional AC load and it's inefficiency. I'd multiply power savings by 3-4 if you want an accurate figure for amount saved.

    Fans running at a bit higher RPM does not increase energy consumption in a noticeable way. A typical PC fan power consumption is about 2W. If you are water cooling without fans then there will not be any difference at all.

    If you need air-condition at all then you must realize that these systems have COP of about 4. That means that increasing heat dissipation of your computer by X watts will lead to increase of air-condition consumption by about X/4. That means that your power multiplier of 3-4 is very wrong. If you really want to apply it at all (notice that in during winter you save on heating) then it should be somewhere around 1.25 - 1.3. That does not make a significant difference.

  13. Re:Wow! on Intel's Skylake Architecture Reviewed · · Score: 1

    I was considering upgrades because of power savings many times and I always did a computation how long it would take so that the saved energy pays for the upgrade. Mostly the result was about 9 years. It was always bigger than 4 years. In other words it does not make sense to upgrade because of power savings. I guess only Germans (where energy is ridiculously expensive for home users) may consider upgrade because of power savings :)

  14. a lot of small things on Ask Slashdot: For What Are You Using 3-D Printing? · · Score: 1

    cases (avr-dragon, beaglebone)

    replacement parts (e.g. knobs for scope, handle for a valve, dust cover for a bicycle pedal ...)

    coil spools

    holder type things (e.g. PSU holder, HDD holder, CPU water cooler holder, ...)

    toys for kids (e.g. a planetary gear assembly to teach them how it works)

    improvement parts for the 3d printer itself

    prototyping stuff (e.g. usable ergonomic contoured keyboard case)

  15. Re:Slashdot layout on Is Microsoft's .NET Ecosystem On the Decline? · · Score: 1
    The rule is:

    ##div[class="popularity menu-trigger"]

  16. Re:Fire any administrator who does this on Adblock Plus Can Now Be Rolled Out To Every Single Employee In a Company · · Score: 1
    Can the proxy filter remove specific tags from an html document?

    Like for example remove all div elements with class name "advertisement"?

  17. Re:CPU on Turning an Arduino Project Into a Prototype · · Score: 1
    A lot of controllers require a crystal if you want to use them only as a low or at most full speed USB device.

    Did you want to tell that people should not try to build something which would be able to do a low speed USB connection?

    But it is true there are controllers which do not need a crystal for USB.

  18. Re:AdBlock Edge. uBlock. AdBlock Latitude. on German Court Rules Adblock Plus Is Legal · · Score: 1

    Interesting. No Firefox crash for me in the last layer in Archlinux. It is running every day for about 10 hours.

  19. Re:AdBlock Edge. uBlock. AdBlock Latitude. on German Court Rules Adblock Plus Is Legal · · Score: 2

    He is right though. Firefox crashes frequently lately. Try to open the GitHub pages of the Atom editor packages and you see what I mean.

    Is that limited to windows version? Because I did not noticed any crashes in linux version lately.

  20. Re:AdBlock Edge. uBlock. AdBlock Latitude. on German Court Rules Adblock Plus Is Legal · · Score: 2

    Firefox is becoming less and less stable.

    I do not even remember when my Firefox crashed the last time. As far as I can tell, it is extremely stable.

  21. Re:The Elephant Internet on In 10 Years, Every Human Connected To the Internet Will Have a Timeline · · Score: 1

    That is it. The data in timelines will be manipulated.

  22. Re:That would be a nightmare. on In 10 Years, Every Human Connected To the Internet Will Have a Timeline · · Score: 1
    You probably do not know the really important stuff about him, just what his PR team wants you to know.

    Timeline may not be a bad thing if it can be assured the same level of access for everybody and the same level of detail and reliability. And no way to opt out especially for those with power.

  23. get dizzy? on Mountain Biking In Virtual Reality With the Oculus Rift and an Actuating Bike · · Score: 4, Insightful

    Sounds like a cool way to get dizzy because the acceleration effect on the inner ear will be missing.

  24. Re:What the fuck is this pretentious bullshit? on Know Your Type: Five Mechanical Keyboards Compared · · Score: 1
    If you touch type then you can avoid bottoming out the key when you have a good mechanical keyboard. This way you can avoid the hard slowdown at the end of the keystroke which makes finger joint fatigue smaller.

    Bottoming out is the impact when a key reaches the end of travel. The problem with many (but not all) cheap rubber dome keyboards is that the actual key-press is detected only very near the end of the total key travel available. So very soon after key-press registration the key cannot move down any more.

    E.g. Cherry MX brown switches register key-press just after the tactile bump somewhere before 2 mm of travel down. The actual bottoming out happens at 4 mm. This gives you a bit more than 2 mm to stop pressing the key and avoiding the impact of bottoming out. I do not know any rubber dome keyboard which gives you so much length to stop pressing the key.

    If you do not type a lot then there is no need for a mechanical keyboard.

  25. Re:Uncool on PC Cooling Specialist Zalman Goes Bankrupt Due To Fraud · · Score: 2
    On the other side, my Zalman Reserator 1 V2 still works fine. It's more than 8 yers old now.

    http://www.zalman.com/global/p...