Why is light the fastest thing in the universe?

A question from my seven year old son

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Re: Why is light the fastest thing in the universe?

#81  Postby crank » Jul 26, 2016 10:53 pm

Is it something to do with Tyrion Lannister?
“When you're born into this world, you're given a ticket to the freak show. If you're born in America you get a front row seat.”
-George Carlin, who died 2008. Ha, now we have human centipedes running the place
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Re: Why is light the fastest thing in the universe?

#82  Postby chriscase » Jul 28, 2016 4:44 am

Hey I read about the null hypothesis on wikipedia and now I'm confused.

Are we saying that FTL communication is only significant if it happens more often than randomly? Because as far as I can tell if it ever happens - at all - that's a real breakthrough.
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Re: Why is light the fastest thing in the universe?

#83  Postby THWOTH » Jul 28, 2016 1:58 pm

ScholasticSpastic wrote:...

Warp factors are arbitrary units of speed which are inconsistently applied to conceal the plot devices necessary to move a story forward.

...

How very dare you. We among the FTL community--Ftlyers-- find this kind of outmoded and, frankly, patriarchal attitude deeply offensive.

I will be writing PERSONALLY to our chairman, a Mr McC, this very evening.
"No-one is exempt from speaking nonsense – the only misfortune is to do it solemnly."
Michel de Montaigne, Essais, 1580
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Re: Why is light the fastest thing in the universe?

#84  Postby VazScep » Jul 28, 2016 2:15 pm

Speed of plot. Seems Star Trek is pretty unashamedly guilty:

Happens constantly in all versions, driving hard-core fans nuts because the mechanical capabilities of the warp drive, impulse drive, and the shuttles vary violently from episode to episode. When the first Star Trek role-playing game came out, this characteristic was written into the rules. Unlike most science fiction RPGs, no maps with star systems, distances, and travel times was provided. The instructions specified that all this information should be made up according to the requirements of whatever adventure was being run.
Here we go again. First, we discover recursion.
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Re: Why is light the fastest thing in the universe?

#85  Postby ScholasticSpastic » Jul 28, 2016 2:20 pm

THWOTH wrote:
I will be writing PERSONALLY to our chairman, a Mr McC, this very evening.

I don't care. I prefer the hard science fiction to this flaccid stuff anyway.

Mr McC won't kick me out of the FTLer conspiracy club because then he'd have to address the points I make.
"You have to be a real asshole to quote yourself."
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Re: Why is light the fastest thing in the universe?

#86  Postby The_Metatron » Jul 28, 2016 2:21 pm

ScholasticSpastic wrote:
John Platko wrote:
:scratch: I'll take that as a, no - you can't point to credible physicists who explain why they don't accept the science of entanglement as our current best representation of reality - including spooky action at a distance. Why not just say so? :picard:

I can see that, rather than shifting your lazy ass and learning about what you're trying to discuss, you continue to feel more comfortable relying on proclamations from authority figures. There is no such thing in science. A scientist is only an authority to the extent that they competently utilize the scientific method, which includes the correct employment of the null hypothesis in every experimental design.

I am disengaging from your trolling now.

He can't help it, mate.

Sean Carroll!
Harvard Medical School!
World class!

He just read Carroll's book. We can expect plenty of his shit from John Platko for a while.


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Re: Why is light the fastest thing in the universe?

#87  Postby crank » Jul 28, 2016 2:28 pm

Which book, Formless Ends? [that's a bit of a tangle]
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Re: Why is light the fastest thing in the universe?

#88  Postby The_Metatron » Jul 28, 2016 2:35 pm

crank wrote:Which book, Formless Ends? [that's a bit of a tangle]

No worries, he'll be along any time now to tell you all about it. I'll bet he'll ask if I've read it, or challenge me to.


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Re: Why is light the fastest thing in the universe?

#89  Postby John Platko » Jul 28, 2016 2:57 pm

crank wrote:Which book, Formless Ends? [that's a bit of a tangle]


The Big Picture
I like to imagine ...
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Re: Why is light the fastest thing in the universe?

#90  Postby Peksal » Aug 22, 2016 12:15 pm

Why exactly it is the speed of light, I don't know.

However, imagine a clear transparent 3D box or 3D environment, and imagine that it has plenty of objects within it, and that they are all constantly moving at the speed of light, "c". With this being the case, the only option left for these objects, is a change in any of their directions of travel within the 3D environment.

Now lets change the 3D environment into becoming a 4D environment. The new dimension that is added, is the dimension of time. Once again, the objects can change their direction of constant travel, but now do so in a 4D environment.

Thus an object may be at rest in space, and thus in turn, its constant motion is entirely across the dimension of time only. Or, if it were possible, an object may be at rest in time, and thus in turn, its constant motion would be entirely across a dimension of space only, and it would do so, at the speed of light.

As a bird changes its spatial direction of travel, it rotates during that change. If any object in the 4D environment changes its direction, it too rotates during that change, but in this case it is a 4D rotation.

https://www.youtube.com/watch?v=KKAwpEe ... Bh-Mq7HdoQ
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Re: Why is light the fastest thing in the universe?

#91  Postby Agi Hammerthief » Aug 27, 2016 8:18 am

ScholasticSpastic wrote:It isn't.

Indeed: the dark is faster, wherever light arrives the dark is already leaving.
* my (modified) emphasis ( or 'interpretation' )
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Re: Why is light the fastest thing in the universe?

#92  Postby CarlPierce » Sep 05, 2016 1:22 pm

Would we be able to detect anything that might move faster directly ? Light after all is the means by which we detect most things. So maybe light is just the fastest thing we can detect.
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Re: Why is light the fastest thing in the universe?

#93  Postby tuco » Sep 05, 2016 6:34 pm

Remember the, alleged, faster than light neutrinos?
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Re: Why is light the fastest thing in the universe?

#94  Postby newolder » Sep 05, 2016 6:58 pm

CarlPierce wrote:Would we be able to detect anything that might move faster directly ? Light after all is the means by which we detect most things. So maybe light is just the fastest thing we can detect.

The tachyonic antitelephone explains theoretically how:
ABSTRACT

The problem of detecting faster-than-light particles is reconsidered in relation to Tolman's paradox. It is shown that some of the experiments already under way or contemplated must either yield negative results or give rise to causal contradictions.

Received 23 June 1969

Obviously, there’s more on the idea at wikipedia

See also http://hendrix2.uoregon.edu/~imamura/FP ... eek-4.html for some nice pictures. :)
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Re: Why is light the fastest thing in the universe?

#95  Postby tuco » Sep 05, 2016 8:13 pm

Simply put, from a link in another thread:

Thus, for our purposes, we can use the following to describe FTL travel. Consider some observer traveling from point A to point B. At the same time this observer leaves A, a light beam is sent out towards the destination, B. This light travels in the area of fairly flat space-time outside of any effects that might be caused by the method our observer uses to travel from A to B. If the observer ends up at B in time to see the light beam arrive, then the observer is said to have traveled "faster than light".


http://www.physicsguy.com/ftl/html/FTL_part4.html

To design such experiment is, in principle, trivial and at heart of the neutrino experiment. They, allegedly, just arrived sooner than light.
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Re: Why is light the fastest thing in the universe?

#96  Postby devogue » Sep 06, 2016 8:50 pm

VazScep wrote:Speed of plot. Seems Star Trek is pretty unashamedly guilty:

Happens constantly in all versions, driving hard-core fans nuts because the mechanical capabilities of the warp drive, impulse drive, and the shuttles vary violently from episode to episode. When the first Star Trek role-playing game came out, this characteristic was written into the rules. Unlike most science fiction RPGs, no maps with star systems, distances, and travel times was provided. The instructions specified that all this information should be made up according to the requirements of whatever adventure was being run.


Yes, impulse power is pretty fast, somewhere approaching the speed of light.

One quarter impulse power is like first gear, used for getting out of space dock.

My Ford on a motorway can do one quarter impulse power.
It's PETUNIAS TIME again, folks!!!

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Re: Why is light the fastest thing in the universe?

#97  Postby Dark energy » Feb 04, 2017 12:44 am

i always read somewhere that density becomes infinite which i dont get what the heck it means,but does that mean volume is zero?
D=M/V so if as Volume approaches 0 Then density approaches infinity what is happening to the mass?

please explain ,as i have encountered this line of reading many times.
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Re: Why is light the fastest thing in the universe?

#98  Postby The_Metatron » Feb 04, 2017 12:59 am

Dark energy wrote:i always read somewhere that density becomes infinite which i dont get what the heck it means,but does that mean volume is zero?
D=M/V so if as Volume approaches 0 Then density approaches infinity what is happening to the mass?

please explain ,as i have encountered this line of reading many times.

Where?
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Re: Why is light the fastest thing in the universe?

#100  Postby The_Metatron » Feb 04, 2017 5:47 am

That crap is nowhere on that page.


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