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User: hackertourist

hackertourist's activity in the archive.

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Comments · 1,427

  1. Re:Interesting on LIDAR Map Shows Height of Earth's Forests · · Score: 1

    This isn't the first or only way to measure/visualize forestation. Visible light and infrared imaging have been used for this purpose for decades now (and spectrography can tell us stuff like what species we're looking at), so we already have a pretty good idea of how many carbon consumers are lost over time.

  2. Re:Still takes forever to "Rebuild the Font Cache" on VLC 2.0 'Twoflower' Released For Windows & Mac · · Score: 1

    Why does it need to build a cache at all? A quick browse through the interface and preferences show only one place you can specify a font (for the subtitles). A font cache is useful (maybe) when you spend half your time switching between fonts, which clearly isn't the case in VLC.

  3. Re:Distributed Grid on Small, Modular Nuclear Reactors — the Future of Energy? · · Score: 1

    AIU, the economy of scale advantages got lost in the US because every plant was designed and built differently, even if the reactor was a standard unit. This meant huge design and construction costs.

    In France, OTOH, they designed one plant and made copies everywhere else.

  4. Re:I'm terrified. on Pharmacy On-a-chip Dispenses Drugs Automatically · · Score: 4, Informative

    I know that the 'slippery slope' argument is a Slashdot staple, but really?

    Automated drug regimens would be a boon to many people who now for one reason or another forget/skip/whatever. Psychosis, dementia, Alzheimer, ADD, brain damage, the list is long and distinguished.

    Having been around a few people who tend to forget their medication, this would be a substantial improvement in their quality of life and that of the people around them.

  5. Re:Never quite understood this on ESA's Vega Launcher Has Successful Maiden Flight · · Score: 1

    Around 1980, ESA came to the conclusion that by the end of the '90s, Ariane 4 would no longer be large enough to lift the predicted satellites to GEO. That's why ESA developed Ariane 5.

    ESA has been considering Soyuz since at least 2004. I suspect using Soyuz instead of Ariane 4 was a matter of cost.

    As for manned Soyuz launches: the capsule hasn't been designed for sea landings, according to a 2004 ESA report. So manned launches would require a redesign.

  6. Re:europe's spaceport? on ESA's Vega Launcher Has Successful Maiden Flight · · Score: 1

    It's Europe's space port because ESA built, paid for and runs the facility.

    As for why it's in SA: Europe wanted a site that was close to the equator (to take advantage of the Earth's rotational speed, and to make launches to GEO easier). Also, Europe isn't a good place to launch rockets from, due to rocket stages impacting downrange.

  7. Re:Obsoleting their own fleet? on U.S. Navy Receives First Industry Built Railgun Prototype · · Score: 1

    If we can build a steering system in a 30 gram bullet we can build one in a 5Kg shell.

    Wouldn't the huge magnetic field in the gun (they use a current on the order of 1 MA) destroy any electronic circuits in the bullet?

  8. Re:If we can find them... on New Exoplanet Is Best Yet Candidate For Supporting Life · · Score: 2

    If I'm not mistaken, airport radars are just about the most powerful transmissions we create, so they'd be the easiest to detect.

    And setting up an antenna is the easy part. How are you going to decode the transmissions by an alien civilization?

  9. Re:Propulsive landings... on SpaceX Tries Out Its New SuperDraco Rocket Engine · · Score: 1

    But for e.g. Mars, the atmosphere is so thin step 1 will contribute very little delta-V. Are they claiming they can brake from orbital speed to 0?

    (SpaceX can be frustratingly vague about such things)

  10. Re:Impressive on SpaceX Tries Out Its New SuperDraco Rocket Engine · · Score: 4, Informative

    That would be Skylon, they've been at it for years on minuscule amounts of funding, trying to develop a revolutionary engine that can use atmospheric oxygen for the first part of the ascent. They can trace their roots back to HOTOL. What they need is a billionaire investor.

  11. Re:Checking for the release of a new version on Unicode 6.1 Released · · Score: 1

    Only on UK keyboard layouts.

  12. The real news on Sinclair ZX81 Made Out of Lego · · Score: 1

    is that apparently you can't upload your designs to have them produced anymore.

  13. Re:Politics and technology on Aging U-2 Will Fight On Into the Next Decade · · Score: 1

    Destruction of the tooling is one thing (and confirmed by other sources on the web), but destroying the plans while the aircraft was still operational? I don't buy that.

    BTW, destroying the tooling is fairly normal at the end of production of an aircraft. We're not talking about a few spanners here, this is about e.g. fuselage and wing jigs, which take up lots of space and would be costly to store and maintain.

  14. Technical writing on Ask Slashdot: Money-Making Home-Based Tech Skills? · · Score: 1

    I assume your experience is in writing fiction or somesuch. Have you considered technical writing, i.e. creating user manuals, etc.? The skill set overlaps somewhat, but if it's the creative aspects of writing that were the problem, this may be an option.

    --
    (tech writer)

  15. Re:ISRU... on Deathmatch On Mars: an Interview With Warren Ellis · · Score: 1

    It might be easier to develop a mine and its associated processing plant on the moon than on an asteroid. The moon's gravity makes for an easier working environment than weightlessness. It's also not that big an impediment: the LM ascent stage is not much of a rocket; despite that, it can get you to orbital velocity from the lunar surface.

  16. Re:Great engineering! on Mars Rover Opportunity Turns 8 · · Score: 1

    Sure we can. Are you prepared to spend $100M on your next car?

  17. Re:Processing In Memory on Startup Combines CPU and DRAM · · Score: 1

    What about the programming model that was used for every processor that had a 1:1 clock relationship with its memory, i.e. everything before the 80386?

  18. But what does it sound like? on A Data Center That Looks Like a Mansion · · Score: 2, Interesting

    In particular, will the neighbors enjoy the continuous howling of the AC fans?

  19. Re:Failure... on Russian Official Implies Foul Play In Mars Probe Failure · · Score: 1

    equality with most developing nations

    Equality? There are no developing nations with as many launcher programs as the US.
    Sure, there's no man-rated launcher at this moment, but that's a temporary setback. SpaceX is close to offering a man-rated launcher.

  20. Re:Is your parting line supposed to be a critisism on North Korean Nuclear Facilities, From 30,000 Feet · · Score: 5, Informative

    And the USA were already ready to invade the home-turf of Japan at that point, so the down-payment was pretty much already done.

    Uh, no. There are two big differences. One is getting the troops to the Japanese homeland. The invasion of Germany was possible because of D-day. That was a pretty costly maneuver (in manpower lost and equipment), even though it was only a short hop across the Channel. Invading Japan would have meant massive amphibious landings supported not from the US homeland, but from small island bases.

    Couple that with the Japanese willingness to fight to the last man, and the invasion would have been a bloodbath. So yes, a) was a valid reason.

  21. Re:Engineering on What a Black Box Data Dump Looks Like · · Score: 1

    Your increased likelihood of injuries will be reflected in everyone's insurance premiums. It's not just your risk then.

  22. 40 G, no seatbelt, no injuries? on What a Black Box Data Dump Looks Like · · Score: 1

    One of the indications in the log is that the damn fool wasn't wearing his seat belt. That makes him lucky to be alive.

  23. Re:Uh....slashdot? on Before the iPhone, Apple's Stunning Phone From 1983 · · Score: 3, Informative

    Where the heck would all the internals fit, a 1983 era computer was 10x the volume of this phone "prototype".

    The 1981 Sinclair ZX Spectrum would fit inside that phone.

  24. Re:Bandwidth make it improbable? on NASA Considers Sending Telescope To the Outer Solar System · · Score: 1

    Sure it communicates, but bandwidth is a problem at that distance. Galileo was designed for 134 kbit/s. For a telescope that's going to be taking images continuously for a couple of years, that's not much.

  25. Re:Bandwidth make it improbable? on NASA Considers Sending Telescope To the Outer Solar System · · Score: 3, Informative

    Distance is the main factor. By the time you're far enough away, you need really big antennas (the Deep Space Network) of which there aren't many; you don't want to keep one of the few DSN antennas pointed at this probe 24/7.
    On the transmitter side, the power and size/weight budgets limit the signal strength.