0585: "Outreach"

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Comic JK
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0585: "Outreach"

Postby Comic JK » Mon May 18, 2009 4:01 am UTC

Image

title-text: "Completely implausible? Yes. Nevertheless, worth keeping a can of shark repellant next to the bed."
Last edited by Comic JK on Mon May 18, 2009 4:05 am UTC, edited 1 time in total.
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A webcomic funnier than life itself. Updated Monday-Friday.

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aeris92
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Re: "Outreach" Discussion

Postby aeris92 » Mon May 18, 2009 4:02 am UTC

YES! I chose my major wisely. Now, for that shark repellent...

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KyrieEleison
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Re: "Outreach" Discussion

Postby KyrieEleison » Mon May 18, 2009 4:02 am UTC

First raptors, now sharks. Is there any animal which Randall will not cause us to fear (completely rationally, of course)?

Love the ?? over the shark's head.

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Re: "Outreach" Discussion

Postby dennisw » Mon May 18, 2009 4:03 am UTC

Lesson learned: blindfold the shark before you attach the instrumentation.
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joee
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Re: "Outreach" Discussion

Postby joee » Mon May 18, 2009 4:03 am UTC

OP: link please.

Also, that is awesome. Flying sharks ftw
Hi glasnt.

pianojosh
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Re: "Outreach" Discussion

Postby pianojosh » Mon May 18, 2009 4:03 am UTC

You do mean Shark Repellent Bat-Spray, yes?

Dlaten
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Re: "Outreach" Discussion

Postby Dlaten » Mon May 18, 2009 4:04 am UTC

As for the alternate text, which is implausible? A shark floating over dry land or a young girl wanting to be a scientist?

Troger64
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Re: "Outreach" Discussion

Postby Troger64 » Mon May 18, 2009 4:04 am UTC

how big must that balloon be

average weight of a shark anyone?

zdrawingmaster
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Re: "Outreach" Discussion

Postby zdrawingmaster » Mon May 18, 2009 4:07 am UTC

Just think if they did this with the raptors from Jurassic Park. Flying raptors! aaaaagghhhhh!

freddyfish
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Re: "Outreach" Discussion

Postby freddyfish » Mon May 18, 2009 4:10 am UTC

Wouldn't the shark be dead? Its a fish right?

Now an orca on the other hand...

Also, wouldnt the helium always lift the shark, without needing to inflate a balloon? unless its from outside somehow and not in the capsule
Last edited by freddyfish on Mon May 18, 2009 4:20 am UTC, edited 1 time in total.

Comic JK
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Re: "Outreach" Discussion

Postby Comic JK » Mon May 18, 2009 4:10 am UTC

Troger64 wrote:how big must that balloon be
average weight of a shark anyone?


The bull shark, which is about that size (and known to attack humans) weighs 100-250kg. Before you ask: the density of helium is 0.1786g/L, and that of air is 1.2754g/L.

Happy science-ing :)
Last edited by Comic JK on Mon May 18, 2009 4:14 am UTC, edited 1 time in total.
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Steve the Pocket
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Re: "Outreach" Discussion

Postby Steve the Pocket » Mon May 18, 2009 4:12 am UTC

HOLY. SHIT.

This one's one for the records. Right up there with Centrifugal Force and Sandwich. I have a feeling I'm going to be emailing this around for some time.
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wasabifish
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Re: "Outreach" Discussion

Postby wasabifish » Mon May 18, 2009 4:12 am UTC

Idea clearly taken from a recent wired magazine article...

http://www.wired.com/wiredscience/2009/05/baskingshark/

"Like most large fish, they’re difficult to keep track of because they rarely come to the surface, where tags need to be to transmit information to satellites. Skomal got around this hurdle by harpooning the fish with special tags that tracked and stored depth, temperature and light level, which then popped off at a pre-programmed date and rose to the surface. Once a tag hits the surface, it transmits the entire archive of the fish’s journey via satellite."

Regularjoe
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Re: "Outreach" Discussion

Postby Regularjoe » Mon May 18, 2009 4:17 am UTC

100% TOTALLY AWESOME.

And I'd think bow and arrows would be a much better deterrent against flying sharks than any spray.

Kutch
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Re: "Outreach" Discussion

Postby Kutch » Mon May 18, 2009 4:21 am UTC

I want to see Randall's nightstand.

Pifreak94
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Re: "Outreach" Discussion

Postby Pifreak94 » Mon May 18, 2009 4:23 am UTC

On another note, the fourth panel is easily the worst panel of the comic. I mean, seriously, what was Randall thinking?


Just in case you didn't get it, [/sarcasm]

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glasnt
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Re: "Outreach" Discussion

Postby glasnt » Mon May 18, 2009 4:29 am UTC

How the shark knew to go over the scientists instead of the little girl, I have no idea.

It was knocked out and everything! How did it know it's aggressors?

edit: Hi joee :D

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duckshirt
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Re: "Outreach" Discussion

Postby duckshirt » Mon May 18, 2009 4:30 am UTC

Yeah, best win in a while.
Dlaten wrote:As for the alternate text, which is implausible? A shark floating over dry land or a young girl wanting to be a scientist?
lol, he never stops trying to encourage gender equality in science...
lol everything matters
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Re: "Outreach" Discussion

Postby arcticfox.sq » Mon May 18, 2009 4:36 am UTC

Why didn't they have their crossbows with them? Clearly the greatest flaw in their experimental design.
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almafuerte
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Re: "Outreach" Discussion

Postby almafuerte » Mon May 18, 2009 4:42 am UTC

For an average white shark, 2100 cubic meters of Helium would be required.

/ I was wondering when someone was going to calculate this
// I laughed real hard at this one. Funniest XKCD in a while.

epsy
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Re: "Outreach" Discussion

Postby epsy » Mon May 18, 2009 4:45 am UTC


luvrhino
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Re: "Outreach" Discussion

Postby luvrhino » Mon May 18, 2009 4:47 am UTC

For whatever reason, from the first row of panels, i thought it was going to play on the scuba diver in the tree urban legend, though i wasn't sure if it was going to be a shark or an actual scuba diver (who happened to have the bad timing to be above the device when it popped free).

Of course, the actual comic was more in keeping with xkcd's modus operandi.

almafuerte
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Re: "Outreach" Discussion

Postby almafuerte » Mon May 18, 2009 4:47 am UTC

epsy wrote:http://www.youtube.com/watch?v=Fa7ck5mcd1o



Wow, I Want to make a sequel to this one!!

Mega Shark Vs. Giant Octopus Vs. The Killer Tomatoes.

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phlip
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Re: "Outreach" Discussion

Postby phlip » Mon May 18, 2009 4:48 am UTC

Comic JK wrote:
Troger64 wrote:how big must that balloon be
average weight of a shark anyone?


The bull shark, which is about that size (and known to attack humans) weighs 100-250kg. Before you ask: the density of helium is 0.1786g/L, and that of air is 1.2754g/L.

Happy science-ing :)

So, about 3m in radius (at the least - that's assuming a 100kg shark, and that the helium isn't pressurised at all. If it was, say, a 250kg shark, and the pressure in the balloon was 5 atmospheres, it'd be over over 5m in radius.

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enum ಠ_ಠ {°□°╰=1, °Д°╰, ಠ益ಠ╰};
void ┻━┻︵​╰(ಠ_ಠ ⚠) {exit((int)⚠);}
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Cyantre
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Re: "Outreach" Discussion

Postby Cyantre » Mon May 18, 2009 4:56 am UTC

This is the first XKCD comic in a while where I've actually laughed out loud. Brilliant!

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crazymike811
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Re: "Outreach" Discussion

Postby crazymike811 » Mon May 18, 2009 4:58 am UTC

pianojosh wrote:You do mean Shark Repellent Bat-Spray, yes?


yeah, it's the one right next to the Manta Ray Repellent Bat-Spray

batman and homoerotic robin FTW

http://batmanbeatssharkwithdildo.ytmnd.com/
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demadaha
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Re: "Outreach" Discussion

Postby demadaha » Mon May 18, 2009 5:03 am UTC

If she wants to become a scientist she'll have to learn not to get upset. I imagine having your speech center shut down in front of your scientist peers would be quite the embarrassment.
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Det.
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Re: "Outreach" Discussion

Postby Det. » Mon May 18, 2009 5:23 am UTC

...(why do you need lab goggles to make tracking tabs?)

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Psycho Goose
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Re: "Outreach" Discussion

Postby Psycho Goose » Mon May 18, 2009 5:27 am UTC

Hey. That's not very nice. My parents were deep-sea scuba divers who got pulled into the stratosphere by helium balloons before getting eaten by flying sharks.
Not cool, not funny, not a good comic.

On a side note: I want to be a scientist too! Get out of my head, Randall.
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Firnagzen
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Re: "Outreach" Discussion

Postby Firnagzen » Mon May 18, 2009 5:29 am UTC

almafuerte wrote:For an average white shark, 2100 cubic meters of Helium would be required.

/ I was wondering when someone was going to calculate this
// I laughed real hard at this one. Funniest XKCD in a while.


So the tank, assuming 2000 psi (figure pulled off the tubes), we'd need a 15.4 cubic meter tank.

Hm.

Or a better pressure tank.
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Snowdream
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Re: "Outreach" Discussion

Postby Snowdream » Mon May 18, 2009 5:33 am UTC

To be honest, that last set of panels could stand as a comic strip on its own....
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phlip
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Re: "Outreach" Discussion

Postby phlip » Mon May 18, 2009 5:34 am UTC

Det. wrote:...(why do you need lab goggles to make tracking tabs?)

Because otherwise it wouldn't be Science.

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enum ಠ_ಠ {°□°╰=1, °Д°╰, ಠ益ಠ╰};
void ┻━┻︵​╰(ಠ_ಠ ⚠) {exit((int)⚠);}
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metalsheep
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Re: "Outreach" Discussion

Postby metalsheep » Mon May 18, 2009 5:35 am UTC

so, here are the calculations I have
density of air = 1.2 kg/m^3
density of helium = .18 kg/m^3
now - since the gas will have more buoyant force at a lower density, and if anyone has ever seen an inflated weather balloon, it would be best to not completely fill the balloon and instead allow the internal gas to be at the same pressure as the surroundings.
thus 1 atm internal pressure, meaning we can use the given density of helium
so, the weight that can be lifted is equal to the amount of displaced air (I divided through by g already), we need to solve
p(air)*V = mass of air = p(helium)*V + m(shark) + m(ballon)
thus the mass of the displaced air is equal to the mass of the shark and the helium balloon
by rearranging
(p(air)-p(helium))*V = m(shark) + m(balloon)
the mass of the balloon is lost in the uncertainty in the mass of the shark, so we arbitrarily assign the right side the value of 150 kg
thus 1.02*V = 150
147 m^3 or a radius of 6m
EDIT
im an idiot 147m^3 makes a radius of 3.3m
Last edited by metalsheep on Mon May 18, 2009 5:52 am UTC, edited 1 time in total.

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callili
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Re: "Outreach" Discussion

Postby callili » Mon May 18, 2009 5:38 am UTC

I absolutely adore the running scientists ^^

dnamra
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Re: "Outreach" Discussion

Postby dnamra » Mon May 18, 2009 5:46 am UTC

phlip wrote:
Det. wrote:...(why do you need lab goggles to make tracking tabs?)

Because otherwise it wouldn't be Science.

Also, they would have to be dealing with some sort of super-compressed helium to make those tags. I'd wear goggles.

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phlip
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Re: "Outreach" Discussion

Postby phlip » Mon May 18, 2009 5:46 am UTC

metalsheep wrote:147 m^3 or a radius of 6m

Huh? Diameter of 6m, maybe...

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Re: "Outreach" Discussion

Postby guyy » Mon May 18, 2009 5:48 am UTC

AIR SHARK: It's like Air Bud, except it's a flying shark that eats you.

metalsheep
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Re: "Outreach" Discussion

Postby metalsheep » Mon May 18, 2009 5:51 am UTC

Huh? Diameter of 6m, maybe...

good catch - i accidentally told google square root instead of cube root

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Re: "Outreach" Discussion

Postby phlip » Mon May 18, 2009 5:52 am UTC

This is why you use the units in Google Calculator... trying to take the square root of a volume would either give you a result in the nonsensical units of m^(3/2), or fail entirely. [edit] Experimentation says: the latter. [/edit]

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funda
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Re: "Outreach" Discussion

Postby funda » Mon May 18, 2009 5:57 am UTC

Why didn't they fix the lasers to the sharks ?



http://gizmodo.com/5252528/laser-gloves-are-laser-tag-without-the-guns Only £10.14 :lol:


Atleast that will keep the sharks occupied enough not to worry about chomping the scientist ( Chomp chomp chomp chomp :mrgreen: )
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