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    • CommentAuthorLakes
    • CommentTimeJul 25th 2014
     
    Posted By: TrimGives me the idea of a Maser on a drone, zap away those annoying gangs of teenagers to somebody else's neighbourhood.

    Gang busters for hire.
    For teenagers, just play classical music at a frequency that us "oldies" can`t hear.
    • CommentAuthorAsterix
    • CommentTimeJul 26th 2014 edited
     
    Well, a look around youtube (no, I'm not going to give kids links) and various DIY projects makes me more worried about kids with 3W Class 4 laser flashlights. Not for mortal damage, but it'd be a shame to have to go through life with broiled retinas.

    Sometimes, technology ain't so great.
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      CommentAuthorAngus
    • CommentTimeJul 26th 2014
     
    Posted By: LakesFor teenagers, just play classical music at a frequency that us "oldies" can`t hear.


    Generally speaking, particularly if it's Purcell, I don't mind if you play it at the original frequencies.
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      CommentAuthorTrim
    • CommentTimeJul 26th 2014
     
    Epileptic fits and even heart attacks can also be induced by electromagnetic rays.
  1.  
    And by women, occasionally
    • CommentAuthorLakes
    • CommentTimeJul 26th 2014
     
    Just after you see the credit card bill.
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      CommentAuthorTrim
    • CommentTimeAug 20th 2014
     
    LFW

    NRL KrF Nike laser achieves Guinness World Record for enabling highest projectile velocity.

    http://www.laserfocusworld.com/articles/2014/08/nrl-krf-nike-laser-achieves-guinness-world-record-for-enabling-highest-projectile-velocity.html
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      CommentAuthorAngus
    • CommentTimeAug 20th 2014
     
    They move the projectile distance of one mm per 3 kJ laser shot. I figure that's a fuel efficiency equivalent to around 800 l of petrol/100km. (You MPG people will just have to work it out yourselves.)

    Clearly speed does not pay
  2.  
    I suppose it depends on what one defines as a projectile. This pesky thing operates over millimetres. The LHC operates over tens of kilometers (107x further) and is 300x faster
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      CommentAuthorAngus
    • CommentTimeAug 20th 2014
     
    How many joules per shot then? Seems to me Switzerland browns out when they turn it on.
  3.  
    Sorry - no clue. The LHC can't trickle charge and then shoot, though; they can operate for many hours straight on full power
    http://lhc-machine-outreach.web.cern.ch/lhc-machine-outreach/faq/lhc-energy-consumption.htm

    All from the canton of Geneva public utility

    Water, natural gas and electricity are provided to the municipalities of the Canton of Geneva by the state-owned Services Industriels de Genève (shortly SIG). Most of the drinkable water (80%) is extracted from the lake; the remaining 20% is provided by groundwater originally formed by infiltration from the Arve River. 30% of the Canton's electricity needs is locally produced, mainly by three hydroelectric dams on the Rhône River (Seujet, Verbois and Chancy-Pougny). In addition, 13% of the electricity produced in the Canton is made from the heat induced by the burning of waste at the waste incineration facility of Les Cheneviers. The remaining needs (57%) are covered by imports from other cantons in Switzerland or other European countries; SIG buys only electricity produced by renewable methods, and in particular does not use electricity produced using nuclear reactors or fossil fuels. Natural gas is available in the City of Geneva, as well as in about two-thirds of the municipalities of the canton, and is imported from Western Europe by the Swiss company Gaznat. SIG also provides telecommunication facilities to carriers, service providers and large enterprises. From 2003 to 2005, "Voisin, voisine" a Fibre to the Home pilot project with a Triple play offering was launched to test the end-user market in the Charmilles district.

    http://en.wikipedia.org/wiki/Geneva
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      CommentAuthorAngus
    • CommentTimeAug 21st 2014
     
    It's hard to compare anyway, since LHC is somewhat continuous in operation. You would have to figure out how much energy per pound of hadrons flung around the circle and compare that with a pound of foil. All in all, I'm pretty sure it's still cheaper to take public transit, or buy a bike.
  4.  
    If your prunts buy you a bike, I think it's even cheaper
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      CommentAuthorTrim
    • CommentTimeFeb 27th 2015
     
    •  
      CommentAuthorTrim
    • CommentTimeApr 14th 2015
     
    NW

    Solution-grown nanowires make the best lasers.

    http://www.nanowerk.com/nanotechnology-news/newsid=39731.php
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      CommentAuthorTrim
    • CommentTimeAug 29th 2015
     
    Po

    Researchers develop atomic laser operating at the shortest wavelength yet.


    http://phys.org/news/2015-08-atomic-laser-shortest-wavelength.html
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      CommentAuthorTrim
    • CommentTimeSep 17th 2015
     
    NW

    An atomic laser capable of operating at a wavelength of 0.15 nanometers.

    http://www.nanowerk.com/nanotechnology-news/newsid=41294.php
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      CommentAuthorAngus
    • CommentTimeSep 17th 2015
     
    Wow. I'm trying to imagine what you would have on an optical bench to deal with a beam of 0.15 nm radiation. Beamsplitters made of lead foil. Mirrors made of - what?
  5.  
    Heh!
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      CommentAuthorTrim
    • CommentTimeSep 19th 2015
     
    NBF

    Could Andrew actually be wrong about flywheels?

    UK funding combat lasers on Navy ships by 2020 and will use formula 1 flywheel technology to store energy for laser shots.

    http://nextbigfuture.com/2015/09/uk-looks-to-put-combat-lasers-on-navy.html