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/sci/ - Science & Math

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7228450 No.7228450 [Reply] [Original]

>It's a sci-fi movie
>"The nearest planet is seven light years away!"
>"Initiate light speed!"
>They get there almost instantly

>> No.7228451

>>7228450
don't know any movie that goes "light speed"
They always use the term FTL.

>> No.7228455
File: 52 KB, 500x335, Neutrino_stream[1].jpg [View same] [iqdb] [saucenao] [google]
7228455

>>7228451
didn't they found some neutinos that arrive faster than photons like more than %10 velocity ?

>> No.7228458

Are they stupid? Years are a unit of time, not length.

>> No.7228462
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7228462

You fail to understand special relativity. There is no restriction to how far you can get in one second (if you were to survive the acceleration).
Pick related, any point on the hyperbole (e.g. P, P' etc.) is the same amount of time away from the coordinate origin. You can't arrive earlier than light (dashed line), but as far as spatial distance goes (axes to the right direction), there is no restriction.

>> No.7228478
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7228478

>>7228455
no

>> No.7228487

>>7228450
If not troll thread: actually that is how special relativity works you stupid fucking kid.

If troll thread: 5/10, pretty good bait.

>> No.7228491

>>7228462
>You can't arrive earlier than light
>There is no restriction to how far you can get in one second
nice contradiction, faggot

>> No.7228500

>>7228491
obvious troll

>> No.7228501
File: 119 KB, 553x725, 1426943230472.jpg [View same] [iqdb] [saucenao] [google]
7228501

>>7228491
>nice contradiction, faggot
It's not a contradiction. Light arrives earlier in time (smaller value of the event on the t-axis) but you can reach any any spatial distance (projection onto the x-axis) in one second.

>> No.7228505

OP, I think I know what you're trying to say. It takes light seven years to travel to something seven light years away, so they shouldn't arrive to their destination instantly, but instead take seven years to get there if they're going at light speed. Correct?

>> No.7228506

>>7228505
Yes, that's what I meant.

>> No.7228512

>>7228506
ok so you've never heard of "time dilation", outstanding

>> No.7228514

>>7228512
It'd still take 7 years to an outside observer.
The people who sent out the distress call are long dead.

>> No.7228515

>>7228512
I am not a smart man, sir.

>> No.7228519

>>7228515
stop trying to correct stuff then

>> No.7228525

>>7228519
I haven't though.

>> No.7228533
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7228533

>>7228525
Shut the fuck up

>> No.7228535

>>7228533
:O

>> No.7228543

>>7228533
But I haven't said anything this entire time. I've merely typed.

>> No.7228637

>>7228505
actually it takes 7 years from our POV. from the light POV it hits the destination instantly (in t=0)

>> No.7228654

light speed is too slow
https://www.youtube.com/watch?v=ygE01sOhzz0