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the things i ponder when incredibly sleep deprived: i had a…

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the things i ponder when incredibly sleep deprived:

i had a conversation with shawn (later continuing it with kirtan for a while) this morning that was quite odd.

you know, as you approach the speed of light, time slows down. if you had an analog and a digital clock would the displayed time be effected? and would they be effected in the same way? would one slow down more than the other?

and if you were there, would you percieve the time slowing down, or would it not seem to change?

discuss.

(edit: read comments if you want to watch boys throwing their geek cocks around)

Current Mood:
curious curious
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On July 5th, 2004 11:47 pm (UTC), johnphys commented:
It gets wierder.

Say Shawn and Alicia had agreed that after 10 minutes passed for shawn, he'd send a signal to her telling her what time he had, that way she could compare the two times.

So, it reads 12:10 on the boombox, and 12:01 on Alicia's clocks.

Shawn sends a message to Alicia, saying "It's 12:10".

Because the speed of light is the fastest anything can go, by the time it reaches Alicia, her clocks will read exactly 12:10, making the two measurements line up.
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On July 5th, 2004 11:50 pm (UTC), fuzzdecay replied:
umm.... how would it be able to reach me at all if i were going the speed of light?
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On July 5th, 2004 11:52 pm (UTC), johnphys replied:
Easy answer. You're not going the speed of light, just 99% of it, so the message can reach you.
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On July 5th, 2004 11:56 pm (UTC), fuzzdecay replied:
how is that possible if i'm travelling away faster than it's coming after me?

if i were in a car going 90 and someone was trying to catch up with me and they were only going 30, they wouldn't catch up with me.
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On July 5th, 2004 11:58 pm (UTC), fiduch replied:
lol, but you're going 99% of the speed of light, and the message can travel at the speed of light! :op so it can totally catch up to you... and the difference will be more or less negligible.
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On July 6th, 2004 12:01 am (UTC), fuzzdecay replied:
but is this message travelling at the speed of light?
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On July 6th, 2004 12:03 am (UTC), fiduch replied:
presumably... or at least closer to it than you are. radio waves, for instance, are just long wavelengths of radiation... the same kind of radiation that, at shorter wavelengths, constitutes visible light.
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On July 6th, 2004 12:07 am (UTC), fuzzdecay replied:
oh yeah.... i forgot about that.

it's been like... years since i last had a science class. :P
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On July 6th, 2004 12:04 am (UTC), johnphys replied:
if shawn sends it as a radio wave, or cell phone call, it's transmitted at the speed of light, yes.
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On July 6th, 2004 12:08 am (UTC), fiduch replied:
well, it's presumably not travelling through a vaccuum, so not *quite* the absolute speed of light... but, at the very least, the same speed a photon of light would travel the same path at.
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On July 6th, 2004 12:10 am (UTC), johnphys replied:
it's space dude.

Vacuum enough for this discussion :)
— On July 6th, 2004 12:14 am (UTC), fiduch posted a reply · Expand
— On July 6th, 2004 12:16 am (UTC), johnphys posted a reply · Expand
— On July 6th, 2004 12:18 am (UTC), fiduch posted a reply · Expand
— On July 6th, 2004 12:21 am (UTC), johnphys posted a reply · Expand
— On July 6th, 2004 12:25 am (UTC), fiduch posted a reply · Expand
— On July 6th, 2004 12:27 am (UTC), johnphys posted a reply · Expand
— On July 6th, 2004 12:31 am (UTC), fiduch posted a reply · Expand
On July 5th, 2004 11:56 pm (UTC), alan_is_ninja replied:
How about if they decided to meet up at 12:10. She's flying around and notices its time to be back so she gets to wherever at 12:10 by her clock. Would it be 12:10 by the other's clock?
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On July 6th, 2004 12:03 am (UTC), johnphys replied:
You're REALLY going to have to clarify this question to get an answer out of me.

I'll try to clarify it for you.

If they decide to meet up back on earth at 12:10, what happens is this.

Shawn stays put for 10 minutes and waits. Alicia won't show up for some time though.

Alicia travels for 5 minutes (HER time), and then travels back for 5 minutes (HER time).

The KEY thing here is that Alicia CHANGED DIRECTION, so the two points of view are no longer equal. Alicia is now the traveler.

Since for every minute Alicia, experiences, Shawn experiences 10, she only experiences 1, when she gets back, she will have gone through 10 minutes, her clocks read 12:10.

Shawn, however, experienced 10 times that! His clock reads 1:40.

Alicia has just traveled 100 minutes into shawn's future, and it took her 10 mintues to get there.
On July 6th, 2004 12:05 am (UTC), alan_is_ninja replied:
Thats exactly what I was trying to ask/say!
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On July 6th, 2004 12:13 am (UTC), johnphys replied:
Glad I guessed right then!
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