/sci/ - Science & Math

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Tractor Beams! Anonymous Wed Nov 26 15:58:30 2014 No.6905347 [Reply] [Original]

Are humans really too dumb to make them work? or is the US gov refraining from publicizing the tool to keep losers from pointing it at the moon?

>>	Anonymous Wed Nov 26 16:17:01 2014 No.6905375 >>6905347 Can't be done.

>>	Anonymous Wed Nov 26 16:19:00 2014 No.6905381 File: 128 KB, 728x426, 1415941853700.gif [View same] [iqdb] [saucenao] [google] >>6905347 >>/x/

>>	Anonymous Wed Nov 26 16:24:13 2014 No.6905395 If there was a way to reverse gravity in the beam, maybe. Maybe if there was a portal or wormhole or something to a world where the vector of gravity is opposite that of on earth you could get things to fall up towards the portal.

>>	Anonymous Wed Nov 26 16:28:17 2014 No.6905401 Pressor beams are a more plausible concept. I think to do a "tractor beam", you'd basically be using a pressor beam to deploy some sort of tow rope, like a bunch of boron nitride nanotube filaments.

>>	Anonymous Thu Nov 27 09:17:52 2014 No.6906752 >>6905347 Simple. Make your spaceship heavier than the earth. Then things will fall towards your spaceship

Anonymous Thu Nov 27 10:32:58 2014 No.6906843
File: 26 KB, 570x327, C__Data_Users_DefApps_AppData_INTERNETEXPLORER_Temp_Saved Images_WhaleHarpGun1.jpg [View same] [iqdb] [saucenao] [google]

>>6905347
Impossible by now, by technology and theoretical knowledge I guess.

But pic related is a viable solution

Anonymous Fri Nov 28 09:50:21 2014 No.6908854

>>6905375
>>6906843
>>6905401
>its imposibru!

>A long-range polarization-controlled optical tractor beam
http://www.nature.com/nphoton/journal/v8/n11/full/nphoton.2014.242.html

And for the popsci people (aka most of sci):
>Tractor beam created: the ‘holy grail for laser physicists’
http://www.theguardian.com/technology/2014/oct/20/optical-tractor-beam-laser-physicists

>>	Anonymous Fri Nov 28 19:42:10 2014 No.6909631 >>6905375 >>6905381 tractor beams are happening on a small scale it seems like.. am i right?

>>	Anonymous Fri Nov 28 21:42:54 2014 No.6909766 >>6908854 That's not a sci-fi tractor beam. We're talking about relatively large amounts of energy to very gently move dust motes. It doesn't scale to macroscopic objects.

>>	Anonymous Sat Nov 29 12:30:22 2014 No.6910576 >>6905347 why do you ask /sci/? they cant even explain how gravity works

>>	Anonymous Sat Nov 29 17:34:16 2014 No.6911172 >>6906843 nice file name faggot

>>	Anonymous Sat Nov 29 17:44:55 2014 No.6911199 >>6905347 we have tractor beams today: http://www.nature.com/nphoton/journal/v8/n11/full/nphoton.2014.242.html Except if you tried to lift a cow you'd need gigawatts of laser and would end up turn it to ash before you moved it an appreciable distance

>>	Anonymous Sat Nov 29 17:46:45 2014 No.6911206 >>6909766 Well too fucking bad. Did you specify that the tractor beam had to move large objects in your original post because you did not OP.

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