Physics (?) question.

Started by Techno, 07 November 2013, 06:00:02 PM

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Techno

Don't know why I came up with this today.....(Just one of those things...and the way my mind often goes off on a tangent, I suppose.)
If you could see one end of a rainbow (obviously at a certain distance) and you could travel at the speed of light.....Could you actually get to the end of the rainbow and it still be there ?
Cheers - Mr Barking-Mad of Wales.

Fenton

If I were creating Pendraken I wouldn't mess about with Romans and  Mongols  I would have started with Centurions , eight o'clock, Day One!

Duke Speedy of Leighton

No, because rainbows are actually circular, therefore have no beginning or end!  :P

A Full-Circle Rainbow
Added by Amythest444
If you could get up high enough in the sky, then you'd see that some rainbows continue below the horizon. That's because when the sun and rain combine to make a rainbow, they really make a full-circle rainbow. We can't see all of the circle, because the horizon blocks it from our view. Pilots high in the sky do sometimes report seeing genuine full-circle rainbows.
The only way to see the full circle of a rainbow in the sky is to be above the raindrops and have the sun behind you.
You may refer to me as: Your Grace, Duke Speedy of Leighton.
2016 Pendraken Painting Competion Participation Prize  (Lucky Dip Catagory) Winner

Fenton

If I were creating Pendraken I wouldn't mess about with Romans and  Mongols  I would have started with Centurions , eight o'clock, Day One!

Duke Speedy of Leighton

You may refer to me as: Your Grace, Duke Speedy of Leighton.
2016 Pendraken Painting Competion Participation Prize  (Lucky Dip Catagory) Winner

ronan

er... what do you smoke guys ?   :-\
( may I have some ? )  ;D

petercooman

Phil, you hust wanted the pot o' old didn't ya?

get2grips

Quote from: Techno on 07 November 2013, 06:00:02 PM
Don't know why I came up with this today.....(Just one of those things...and the way my mind often goes off on a tangent, I suppose.)
If you could see one end of a rainbow (obviously at a certain distance) and you could travel at the speed of light.....Could you actually get to the end of the rainbow and it still be there ?
Cheers - Mr Barking-Mad of Wales.

I don't know what's worse...the fact you asked this or the fact it was answered :-\

This forum CANNOT get any weirder :o

Orcs

Quote from: get2grips on 07 November 2013, 07:43:38 PM
I don't know what's worse...the fact you asked this or the fact it was answered :-\

This forum CANNOT get any weirder :o

You must know better by now - Yes it can
The cynics are right nine times out of ten. -Mencken, H. L.

Life is not a matter of holding good cards, but of playing a poor hand well. - Robert Louis Stevenson

Orcs

When I went to the Victoria Falls in Zambia many years ago we walked across the Knife Edge Bridge over one of the gorges.  Because of the huge volume of spray and the sun you get a full curcle of rainbow around the bridge.
The cynics are right nine times out of ten. -Mencken, H. L.

Life is not a matter of holding good cards, but of playing a poor hand well. - Robert Louis Stevenson

get2grips

Quote from: Just a few Orcs on 07 November 2013, 07:49:28 PM
You must know better by now - Yes it can

;D ;D ;D

To (mis)quote Douglas Adams:

"There is a theory which states that if ever anyone discovers exactly what this forum is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.

There is another theory which states that this has already happened."  ;)

Fenton

I think this forum exists in 100's of different realities...In one of them FSN didnt want a Centurion...I know its madness but its a theory
If I were creating Pendraken I wouldn't mess about with Romans and  Mongols  I would have started with Centurions , eight o'clock, Day One!

Last Hussar

Quote from: Techno on 07 November 2013, 06:00:02 PM
Don't know why I came up with this today.....(Just one of those things...and the way my mind often goes off on a tangent, I suppose.)
If you could see one end of a rainbow (obviously at a certain distance) and you could travel at the speed of light.....Could you actually get to the end of the rainbow and it still be there ?
Cheers - Mr Barking-Mad of Wales.

No.

The rainbow effect is caused by the diffraction of light, thus what you see and the way you see it depends on there being distance between you and the prism.  No two people see the same rainbow, because they are standing in different places.
I have neither the time nor the crayons to explain why you are wrong.

"The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little."
Franklin D. Roosevelt

GNU PTerry

Fenton

Quote from: Last Hussar on 07 November 2013, 07:58:47 PM
No.

The rainbow effect is caused by the diffraction of light, thus what you see and the way you see it depends on there being distance between you and the prism.  No two people see the same rainbow, because they are standing in different places.

My head hurts now
If I were creating Pendraken I wouldn't mess about with Romans and  Mongols  I would have started with Centurions , eight o'clock, Day One!

get2grips

Quote from: Fenton on 07 November 2013, 07:57:03 PM
I think this forum exists in 100's of different realities...In one of them FSN didnt want a Centurion...I know its madness but its a theory

Ridiculous ;D ;D ;D