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What is the current rate of change of the speed of light? Modern interferometers do not pick up a difference when laser light is split into paths of varying lengths.

2007-11-20 10:21:56 · 13 answers · asked by novangelis 7 in Society & Culture Religion & Spirituality

13 answers

Not a Creationist, but there is a scientific theory that the speed of light (in vacuum) might vary and not be constant after all.

2007-11-20 10:44:48 · answer #1 · answered by Steve C 6 · 3 0

There was an science article out last week speaking of this. The speed of light is slowing down. This was somehow observed when the atomic clock was found to be inaccurate, and somehow measuring the speed of light is the way to benchmark this 'clock'. There was found to be a disrepancy from what the speed of light was, to present days slower light.
Wish I could find the article, it was interesting in an anal way.
Sign of the times, the lights are slower. It will take longer to see the Christmas lights this year.

2007-11-20 10:35:10 · answer #2 · answered by I have a bear spot 5 · 1 0

A light-year is a measure of distance NOT time. Light traveling at the speed c in any direction is a DEFINITION Einstein chose. He is aware that it is only a convention for the sake of DEFINING an otherwise arbitrary SIMULTANEITY. What is amazing with Special Relativity is that you can only define the 2-way speed of light and not the one way speed, not even in principle. The one-way speed of light is not a feature of nature, but rather, merely a tool for humans. Saying that a light source that is 10 billion light-years away took 10 billion years to arrive, at say an observer's telescope, is not an OBJECTIVE reality. It is only chosen as a definition or convention. Einstein showed that there is no such thing as OBJECTIVE SIMULTANEITY -- this means an observer can so choose his way of timekeeping as long as the two-way speed of light (i.e. back and forth light travel, or closed loop light travel) is the constant c. It is NOT an OBJECTIVE reality to say that light took a time of 10 billion years to arrive from a source that is 10 billion light-years away. Because this is equivalent to measuring the one-way speed of light, which is not possible. What you are only permitted to say to be objective is that it will take 20 billion years for the light to travel to earth and back to its source. This may sound counter-intuitive but you can actually say, with the same amount of validity that light instantaneously arrived to earth (that is, it has infinite speed) but it will take 20 billion years for it to come back to its source (with speed c/2). Choosing either interpretation is perfectly valid according to Einstein and they are mathematically equivalent as long the chosen definition is held consistently. Amazing isn't it?!

2016-05-24 09:06:06 · answer #3 · answered by ? 3 · 0 0

The speed of light.
That is a great question and one that Einstein spent most of his days pondering about. It is believed that light has a constant speed no matter what aprox 670 million miles per hour. It is theorized that if you had a craft that would travel at 669.9999.. Mil light would not be moving at .1 faster, it still is going at 670 no matter what.

So why is that and why is it slowing down? (All in theory no laws yet) light is traveling through the medium of the fabric of space. It all originated in one spot believed to be way smaller than a Quark. As this expansion of fabric grows so does our 4 dimensions thus in our perception the peed is slowing down, but its just getting bigger.

(Hard to put it into words) But we (all matter and universe) may be growing in size but there is nothing to benchmark it to. (I’ll stop : )

2007-11-20 18:52:17 · answer #4 · answered by RA 2 · 4 1

I'm still amazed (I do a bit of understatement sometimes) that there are people in your country (we couldn't possibly have anyone like that in Oz) who believe that 'god' woke up one morning, scratched his anus and THOUGHT he'd create a universe and over the next six days he *poofed* everything into existence and NEEDED a rest on the seventh day cos he was knackered.
Any god worth his salt coulda *snapped* it all into existence in POINT 3 of a second and still had time to take the missus out for a cold beer before his evening meal.

Of course fundies dunno HOW he did it: if he used a Harry Potter wand, wiggled his nose like Samantha from Bewitched or blinked his eyes like Jeannie outa I Dream of Jeannie.

Of course fundies dunno WHY he did it: felt a bit bored and wanted something to while a moment (in his time) while he came up with a better plan.

Of course fundies dunno Why a perfect being could possibly be so INcomplete that he had desires in the first place.

Of course fundies dunno HOW he could possible make something from NOTHING - the fundies keep telling we (Free thinkers) that making something from nothing is IMpossible and a rather ridiculous notion.
I totally agree with them when they postulate that an Invisible Sky Critter is doing the *poofing*.

I think I’ll go for a cold beer – it’s gonna be a hot summer in Oz.
.

2007-11-20 15:42:54 · answer #5 · answered by Anonymous · 2 0

The speed of light may have been different in the past, just as the amount of C-14 in the original atmosphere may have been different than believed. Also, remember that God created a "mature" creation, which would have included already-existing light, so one would not have to calculate how long it took that light to travel.

2007-11-20 10:27:36 · answer #6 · answered by FUNdie 7 · 2 7

Too late; Fireball has lost it for good, and nothing will ever make her snap out of it....

shame shame shame....

2007-11-20 10:28:56 · answer #7 · answered by Lex Fok B.M.F. 3 · 4 0

This question requires knowledge, so you may not get many fundie responses.

2007-11-20 10:26:53 · answer #8 · answered by Anonymous · 6 0

The same as today, but your belief in Darwinism is just in your imagination. Think about the human body. Something mysterious and perfect. Do you think that from nothing something would come? Forget about it. God is the One that create that. And I don't have to tell you about the earth being on nothing, the star being billions of billions. The ear... please.

2007-11-20 10:29:56 · answer #9 · answered by Nino 3 · 1 6

HUH!!!


Way over my head sweetie.

2007-11-20 10:38:40 · answer #10 · answered by Gorgeoustxwoman2013 7 · 1 0

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