check of maths reqd :) light from the sun takes a little over 8 minutes to reach the earth :)
Aphelion (largest distance) = 152,500,000 m Perhelion (shortest distance ) = 147,500,000 m
Average distance of earth from sun = 150 million kilometres 150,000,000,000 m
Speed of light = 299,792,458 m/s
150,000,000,000/299,792,458 = 500.346 s
500.346/60 = 8.34 minutes or 8 mins 20 secs approx
.... I'll get me coat ... ;D
I've not been called "young fella" for many a year .. :) !!!!!
but thanks for the thought !!! :D
QuoteI've not been called "young fella" for many a year .. :) !!!!!
but thanks for the thought !!! :D
He must have had a bang on the head :D Being polite.. ;D
Fascinating subject. The light travelling from the sun (at 186000 miles per sec) takes approx 4 minutes to cover the 93000000 miles to earth. Therefore, when we look at the sun, we are actually seeing it where it was 4 minutes ago. So, if the nearest star is 10 light years away, we are actually seeing that where it was ten years ago.
A star could explode and cease to exist and we wouldn't know about it for years!
QuoteFascinating subject. The light travelling from the sun (at 186000 miles per sec) takes approx 4 minutes to cover the 93000000 miles to earth. Therefore, when we look at the sun, we are actually seeing it where it was 4 minutes ago. So, if the nearest star is 10 light years away, we are actually seeing that where it was ten years ago.
A star could explode and cease to exist and we wouldn't know about it for years!
Yes but as Einstien proved, gravity bends light, so that star that looks ten light years away might only be two light years away or possibly a thousands light years away :-/
QuoteQuoteFascinating subject. The light travelling from the sun (at 186000 miles per sec) takes approx 4 minutes to cover the 93000000 miles to earth. Therefore, when we look at the sun, we are actually seeing it where it was 4 minutes ago. So, if the nearest star is 10 light years away, we are actually seeing that where it was ten years ago.
A star could explode and cease to exist and we wouldn't know about it for years!
Yes but as Einstien proved, gravity bends light, so that star that looks ten light years away might only be two light years away or possibly a thousands light years away :-/
If anyone gets full of ale and reads this thread tonight.....there'll be some real sh1te forthcoming ::)
So if a star is 2 light years away,,How many dark years is it then :-/
Easy question ;D ;D ;D
QuoteSo if a star is 2 light years away,,How many dark years is it then :-/
Easy question ;D ;D ;D
Move away from the beer
The only thing i know thats faster than the speed of light is SWMBO emptying my wallet.. ;D ;D ;D:y :y :y ;D ;D ;D ;D ;D :y :y :y :y
Wait, why am I bringing mine to Wales? I don't need her learning from yours! She's behaving so far . . . :-/QuoteThe only thing i know thats faster than the speed of light is SWMBO emptying my wallet.. ;D ;D ;D:y :y :y ;D ;D ;D ;D ;D :y :y :y :y
Do our wives know each other :o :o :o :o ;D ;D
This is assuming that light is not subject to the Doppler effect?Light and the doppler effect is the basis of the theory of relativity. That said, your answer is still valid. ;)
I've been following this one for a while whilst I tried to get my head round the question. My theory is as follows.Been working on this for Hours too. What happens then if i just close my eyes, how fast does it move then???
If you enter a dark room and turn on the light, the light will move at the speed of light until it reaches your eye. This has been measured as you say at 'the speed of light'.
Therefore, when you turn off the light, the light will recede at the an equal speed (assuming the speed of light is constant and who am I to argue?) meaning that the speed of dark is merely the speed at which light recedes i.e. the same. This is assuming that light is not subject to the Doppler effect?
Problem solved. Next.
;)
QuoteThis is assuming that light is not subject to the Doppler effect?Light and the doppler effect is the basis of the theory of relativity. That said, your answer is still valid. ;)
QuoteI've been following this one for a while whilst I tried to get my head round the question. My theory is as follows.Been working on this for Hours too. What happens then if i just close my eyes, how fast does it move then???
If you enter a dark room and turn on the light, the light will move at the speed of light until it reaches your eye. This has been measured as you say at 'the speed of light'.
Therefore, when you turn off the light, the light will recede at the an equal speed (assuming the speed of light is constant and who am I to argue?) meaning that the speed of dark is merely the speed at which light recedes i.e. the same. This is assuming that light is not subject to the Doppler effect?
Problem solved. Next.
;)
(http://i211.photobucket.com/albums/bb52/crazydad_01/funny02pc9.jpg)
Barring some creative definition of dark, it is the absence of light. The speed of absence of light is the same as the speed of light. The speed of leaving is the same as the speed of arriving, relativity takes care of the doppler effect meaning that the speed of the observer is irrelevant.QuoteQuoteThis is assuming that light is not subject to the Doppler effect?Light and the doppler effect is the basis of the theory of relativity. That said, your answer is still valid. ;)
It is? :o :o :o
Had to look that one up...................................QuoteQuoteI've been following this one for a while whilst I tried to get my head round the question. My theory is as follows.Been working on this for Hours too. What happens then if i just close my eyes, how fast does it move then???
If you enter a dark room and turn on the light, the light will move at the speed of light until it reaches your eye. This has been measured as you say at 'the speed of light'.
Therefore, when you turn off the light, the light will recede at the an equal speed (assuming the speed of light is constant and who am I to argue?) meaning that the speed of dark is merely the speed at which light recedes i.e. the same. This is assuming that light is not subject to the Doppler effect?
Problem solved. Next.
;)
(http://i211.photobucket.com/albums/bb52/crazydad_01/funny02pc9.jpg)
That may take a little longer but I reckon J-P Sartre may have had something to say about it. This is surely an existentialist question? :-[
QuoteBarring some creative definition of dark, it is the absence of light. The speed of absence of light is the same as the speed of light. The speed of leaving is the same as the speed of arriving, relativity takes care of the doppler effect meaning that the speed of the observer is irrelevant.QuoteQuoteThis is assuming that light is not subject to the Doppler effect?Light and the doppler effect is the basis of the theory of relativity. That said, your answer is still valid. ;)
It is? :o :o :o
Had to look that one up...................................
>:(Existentialism is a philosophical movement which claims that individual human beings create the meanings of their own lives. It is a reaction against more traditional philosophies, such as rationalism and empiricism, which sought to discover an ultimate order in metaphysical principles or in the structure of the observed world, and therefore universal meaning. The movement had its origins in the 19th century thought of Kierkegaard and Nietzsche and was prevalent in Continental philosophy. In the 1940s and 1950s, French philosophers such as Jean-Paul Sartre, Simone de Beauvoir, and Albert Camus wrote scholarly and fictional works that helped to popularize themes associated with existentialism: "dread, boredom, alienation, the absurd, freedom, commitment, [and] nothingness".[1]
That lot went straight over my head, :-/QuoteHad to look that one up...................................
>:(Existentialism is a philosophical movement which claims that individual human beings create the meanings of their own lives. It is a reaction against more traditional philosophies, such as rationalism and empiricism, which sought to discover an ultimate order in metaphysical principles or in the structure of the observed world, and therefore universal meaning. The movement had its origins in the 19th century thought of Kierkegaard and Nietzsche and was prevalent in Continental philosophy. In the 1940s and 1950s, French philosophers such as Jean-Paul Sartre, Simone de Beauvoir, and Albert Camus wrote scholarly and fictional works that helped to popularize themes associated with existentialism: "dread, boredom, alienation, the absurd, freedom, commitment, [and] nothingness".[1]
Obviously!! >:(
QuoteThat lot went straight over my head, :-/QuoteHad to look that one up...................................
>:(Existentialism is a philosophical movement which claims that individual human beings create the meanings of their own lives. It is a reaction against more traditional philosophies, such as rationalism and empiricism, which sought to discover an ultimate order in metaphysical principles or in the structure of the observed world, and therefore universal meaning. The movement had its origins in the 19th century thought of Kierkegaard and Nietzsche and was prevalent in Continental philosophy. In the 1940s and 1950s, French philosophers such as Jean-Paul Sartre, Simone de Beauvoir, and Albert Camus wrote scholarly and fictional works that helped to popularize themes associated with existentialism: "dread, boredom, alienation, the absurd, freedom, commitment, [and] nothingness".[1]
Obviously!! >:(
put it in here to make you think i new what i was talking about :y :y
Coming up to a senior soon.....................
Hmmm....dark does not arrive...light ceases to arrive.....not the same.The campfire discussions in Wales are bound to impress . . . ::) ;D ;D
Told you this would get silly :-/
QuoteHmmm....dark does not arrive...light ceases to arrive.....not the same.The campfire discussions in Wales are bound to impress . . . ::) ;D ;D
Told you this would get silly :-/
I havent found one i really like yet, they all mirrow my moods at the moment............. :-[ :-[QuoteQuoteThat lot went straight over my head, :-/QuoteHad to look that one up...................................
>:(Existentialism is a philosophical movement which claims that individual human beings create the meanings of their own lives. It is a reaction against more traditional philosophies, such as rationalism and empiricism, which sought to discover an ultimate order in metaphysical principles or in the structure of the observed world, and therefore universal meaning. The movement had its origins in the 19th century thought of Kierkegaard and Nietzsche and was prevalent in Continental philosophy. In the 1940s and 1950s, French philosophers such as Jean-Paul Sartre, Simone de Beauvoir, and Albert Camus wrote scholarly and fictional works that helped to popularize themes associated with existentialism: "dread, boredom, alienation, the absurd, freedom, commitment, [and] nothingness".[1]
Obviously!! >:(
put it in here to make you think i new what i was talking about :y :y
Coming up to a senior soon.....................
Mine too. He was obviously off sick the day they did punctuation at school. ;D
Anyway, will you stop changing your avatar! I keep looking in the 'Welcome' section to welcome a new member only to see it's you.
;) ;) ;)
how many stars are there in the whole solar system :)
Quotehow many stars are there in the whole solar system :)
One.
`How fast must Superman have flown, to turn back time and save Lois lane. :-/ :-/
QuoteQuotehow many stars are there in the whole solar system :)
One.
And that is NOT you ;D ;D ;D
Quote`How fast must Superman have flown, to turn back time and save Lois lane. :-/ :-/
Compared to what? Earth or Krypton?
Black as the ace of spades.................QuoteQuoteQuotehow many stars are there in the whole solar system :)
One.
And that is NOT you ;D ;D ;D
Still burning bright down here. It must be dark in your neck of the woods by now isn't it? :-?
QuoteBlack as the ace of spades.................QuoteQuoteQuotehow many stars are there in the whole solar system :)
One.
And that is NOT you ;D ;D ;D
Still burning bright down here. It must be dark in your neck of the woods by now isn't it? :-?
ANORAKS :(
RIGHTS THATS IT HOW ABOUT A NICE FREINDLY NATIONAL MEET >:(
Can a spot of light on a surface travel faster than the speed of light if you swing the lamp really fast? And if so, does that mean that information can travel faster than the speed of light?
No conclusive evidence of my thoughts about the speed of dark but it got me thinking.You're pretty drunk!
Why isnt there any ham in a hamburger ;D ;D ;D
QuoteNo conclusive evidence of my thoughts about the speed of dark but it got me thinking.You're pretty drunk!
Why isnt there any ham in a hamburger ;D ;D ;D
I have just poured my first drink of the evening..Drunk "" Chance would be a fine thing.. :y
Hint:
Frankfurter
Weiner
No conclusive evidence of my thoughts about the speed of dark but it got me thinking.
Why isnt there any ham in a hamburger ;D ;D ;D
QuoteNo conclusive evidence of my thoughts about the speed of dark but it got me thinking.
Why isnt there any ham in a hamburger ;D ;D ;D
For the same reason theres no sand in a sandwich. Or any wiches. ;D ;D
QuoteQuoteNo conclusive evidence of my thoughts about the speed of dark but it got me thinking.
Why isnt there any ham in a hamburger ;D ;D ;D
For the same reason theres no sand in a sandwich. Or any wiches. ;D ;D
Know thats more like the answer i was expecting.. :D :y
Why is there only one monopolies commission ??
What else do part-time traffic lights do ?
What is an occasional table when its not a table ?
If you had everything .. where would you put it ??
If you had everything .. where would you put it ??
Everywhere.. :D