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xkcd

Discussion in 'Geeky Images' started by amusicsite, 17 Jul 2012.

  1. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    http://what-if.xkcd.com/3/

    They deserve their own thread I reckon.

    How much Force power can Yoda output?
    —Ryan Finnie
    [​IMG]
    I’m going to—of course—ignore the prequels.
    There’s a great SMBC comic exploring the geopolitical consequences of having Superman turn a crank to provide an unlimited source of energy. We could imagine Yoda using the Force to run a similar generator. But how much power could he really supply?
    Yoda’s greatest display of raw power in the original trilogy came when he lifted Luke’s X-Wing from the swamp. As far as physically moving objects around goes, this was easily the biggest expenditure of energy through the Force we saw from anyone in the trilogy.
    The energy it takes to lift an object to height h is equal to the object’s mass times the force of gravity times the height it’s lifted. The X-Wing scene lets us use this to put a lower limit on Yoda's peak power output.
    First we need to know how heavy the ship was. The X-Wing’s mass has never been canonically established, but its length has—16 meters. An F-22 is 19 meters long and weighs 19,700 lbs, so scaling down from this gives an estimate for the X-Wing of about 12,000 lbs (5 metric tons).
    [​IMG]
    [too many images to show! :eek: ]

    Next, we need to know how fast it was rising. I went over footage of the sc ene and timed the X-Wing's rate of ascent as it was emerging from the water.
    [​IMG]
    The front landing strut rises out of the water in about three and a half seconds, and I estimated the strut to be 1.4 meters long (based on a scene in A New Hope where a crew member squeezes past it), which tells us the X-Wing was rising at 0.39 m/s.
    Lastly, we need to know the strength of gravity on Dagobah. Here, I figure I’m stuck, because while sci-fi fans are obsessive, it’s not like there’s gonna be a catalog of minor geophysical characteristics for every planet visited in Star Wars. Right?
    Nope. I’ve underestimated the fandom. Wookieepeedia has just such a catalog, and informs us that the surface gravity on Dagobah is 0.9g. Combining this with the X-Wing mass and lift rate gives us our peak power output:

    [too many images to show! :eek: ]

    At current electricity prices, Yoda would be worth about $2/hour.
    But telekinesis is just one type of Force power. What about that lightning the Emperor used to zap Luke? The physical nature of it is never made clear, but Tesla coils that produce similar displays draw something like 10 kilowatts—which would put the Emperor roughly on par with Yoda. (Those Tesla coils use lots of very short pulses. If the Emperor is sustaining a continuous arc, as in an arc welder, the power could easily be in the megawatts.)
    What about Luke? I examined the scene where he used his nascent Force powers to yank his lightsaber out of the snow. The numbers are harder to estimate here, but I went through frame-by-frame and came up with an estimate of 400 watts for his peak output. This is a fraction of Yoda's 18 kW, and was sustained for only a fraction of a second.
    So Yoda sounds like our best bet as an energy source. But with world electricity consumption pushing 2 terawatts, it would take a hundred million Yodas to meet our demands. All things considered, switching to Yoda Power probably isn’t worth the trouble—though it would definitely be green.
    [​IMG]
     
  2. Shaun

    Shaun Über Geek

    We should submit a question - what should we ask?
     
  3. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    Last edited by a moderator: 2 Apr 2014
  4. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    Shaun likes this.
  5. Shaun

    Shaun Über Geek

    Yes, this would definitely be a good one. :thumbsup:
     
    Last edited: 2 Apr 2014
  6. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    [​IMG]

    In case you did not know most of the xkcd images have interesting alt/title tags (hover over the images to see on their site)

    I liked the one on this....

     
    BoforsGun likes this.
  7. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
    This website is brilliant - Love this one -

    [​IMG]
     
    usha and amusicsite like this.
  8. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
  9. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
  10. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    That reminds me of a job I didn't apply for. Working for a company that only sold Christmas crap. I don't think I could cope with Christmas 365 days a year.
     
  11. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
    Sounds like hell!!
     
  12. Shaun

    Shaun Über Geek

  13. beanz

    beanz Staff Member Staff Member

    Me neither. I heard that one of the supermarkets has already got Santa grottos in store.

    One place I worked wouldn't have any mention of Christmas before the 1st of December. Seemed a bit harsh at the time, but I can see the logic.

    I actually like the run-in to Christmas better than the post-Christmas period. To me, once Boxing Day has gone, it's over. I'd rather enjoy the carols and decorations etc in the weeks before the event. But it is definitely possible to drag Christmas out too much in the pre- and post- periods.
     
  14. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
    Tale end of November is allowed, then whole of December up to boxing day, after that its all over! lol :chicken:
     
  15. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    BoforsGun likes this.
  16. Shaun

    Shaun Über Geek

    :roflmao: ... absolutely nuts physics ... brilliant!! :geek:
     
  17. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
    I'm not sure why I found this so funny...but awesome!
     
    Shaun and amusicsite like this.
  18. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK
    BoforsGun likes this.
  19. BoforsGun

    BoforsGun Über Geek

    Location:
    UK
    How big is this thing!??!?!!??
    I haven;t done any work in half n hour!!!
     
  20. amusicsite

    amusicsite dn ʎɐʍ sᴉɥ┴ Staff Member

    Location:
    UK