/sci/ - Science & Math » Thread #11138932

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seti guy Tue 12 Nov 07:27:36 2019 No.11138932 View Reply Original Report

Quoted By: >>11138935 >>11138936 >>11139186 >>11139190 >>11139240 >>11139349 >>11139386

To a conscious human observer who somehow instantly accelerates to and then travels at c (like a photon), would a trip to the nearest star take an instant, 1540.299863 days, or an eternity?

Anonymous

Anonymous Tue 12 Nov 2019 07:31:04 No.11138935 Report

Quoted By: >>11138948

>>11138932
they would reach it 1540.299863 days ago.

Anonymous

Anonymous Tue 12 Nov 2019 07:31:51 No.11138936 Report

Quoted By: >>11138941 >>11138946

>>11138932
assuming he could travel at c (he can't), an instant for the traveler and 1540 days for the rest of the universe

Anonymous

Anonymous Tue 12 Nov 2019 07:37:14 No.11138941 Report

Quoted By: >>11138948

>>11138936
problem is, I don't think he could ever stop after reaching c

seti guy

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seti guy Tue 12 Nov 2019 07:39:07 No.11138946 Report

Quoted By:

>>11138936
He can't, but a focused beam of information-encoded photons carrying a fully accurate Planck-scale representation of his brain's current state can

seti guy

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seti guy Tue 12 Nov 2019 07:42:03 No.11138948 Report

Quoted By:

>>11138935
What's our state-of-the-art graphical guess at what a red dwarf stars looks like from an Earthlike planet in an Earthlike orbit?

>>11138941
We'll have him absorbed in a 100.00% light absorbing gel at the other end, nice cushy deceleration

Anonymous

Anonymous Tue 12 Nov 2019 10:58:51 No.11139186 Report

Quoted By: >>11139196

>>11138932
Alpha Century is the nearest star to our own at 4.22 light years, so you need to convert that distance to microwave time to get the answer.

Anonymous

Anonymous Tue 12 Nov 2019 11:00:39 No.11139190 Report

Quoted By: >>11139196

>>11138932
It would still feel like 4 years to you

Anonymous

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Anonymous Tue 12 Nov 2019 11:08:05 No.11139196 Report

Quoted By: >>11139238

>>11139186
>4.22 light years, so you need to convert that distance to microwave time
99:99 (the max) is 99:59 in microwave time... so give or take an hour 40 minutes in the furthest cases

>>11139190
Lots of Sopranos, Mad Men and Breaking Bad-level stuff to binge if you're an incorporeal being capable of perception and reflection at c

Anonymous

Anonymous Tue 12 Nov 2019 11:43:12 No.11139238 Report

Quoted By:

>>11139196
>99:99 (the max) is 99:59 in microwave time... so give or take an hour 40 minutes in the furthest cases
Ah ha! thx.

Anonymous

Anonymous Tue 12 Nov 2019 11:46:02 No.11139240 Report

Quoted By: >>11139247

>>11138932
8 minutes.

Anonymous

Anonymous Tue 12 Nov 2019 11:50:19 No.11139247 Report

Quoted By:

>>11139240
>8 minutes.
That's to the nearest Sun, not the nearest star, silly.

Anonymous

Anonymous Tue 12 Nov 2019 13:32:42 No.11139349 Report

Quoted By:

>>11138932
You can't travel *at* c. However, if you *take the limit* as v approaches c, then perceived time taken will approach 0.

Anonymous

Anonymous Tue 12 Nov 2019 13:52:49 No.11139379 Report

Quoted By: >>11139424

When people refer to travelling at the speed of light, do they mean subjectively accelerating to the speed associated with the mathematically constant, or do they mean "objectively" nearing the speed of light from the perspective of outside observers?
I find the former more intuitive, but it causes confusion among people who usually refer to the latter.

Anonymous

Anonymous Tue 12 Nov 2019 13:57:27 No.11139386 Report

Quoted By: >>11139408

>>11138932
From the pov of photon, they're present everywhere, like God.

Anonymous

Anonymous Tue 12 Nov 2019 14:10:09 No.11139408 Report

Quoted By: >>11139410

>>11139386
Are you referencing https://en.m.wikipedia.org/wiki/One-electron_universe? If not, it should be right up your ally

Anonymous

Anonymous Tue 12 Nov 2019 14:13:04 No.11139410 Report

Quoted By:

>>11139408
No, from a relativistic state and the wavefunction from QM.

Anonymous

Anonymous Tue 12 Nov 2019 14:19:51 No.11139424 Report

Quoted By:

>>11139379
From the point of view of the astronaut, he is not moving at all. It's the universe that is moving at high speed.

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