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Questions and Answers Feel free to ask any questions about Accrington and the surrounding area and hopefully one of our members can help you out. |
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Welcome to Accrington Web!
We are a discussion forum dedicated to the towns of Accrington, Oswaldtwistle and the surrounding areas, sometimes referred to as Hyndburn! We are a friendly bunch please feel free to browse or read on for more info. You are currently viewing our site as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, photos, play in the community arcade and use our blog section. Registration is fast, simple and absolutely free, so please, join our community today!
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13-03-2006, 03:31
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#1
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I am Banned
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if a car
if a car was to travel at the speed of light what would happen when you switched the headlights on ...?
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13-03-2006, 06:03
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#2
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God Member
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Re: if a car
there is no answer to this question unfortunately(infinite energy required for your car to reach 'c' [1]m/s),
If you were close to c, effectively the wavelength of the reflected light would be doppler shifted well into UV so you wouldn't 'see' anything. in the UV spectrum things would appear rotated.
I don't suppose this post goes any way to dispelling teh idea I'm a geek now does it?
[1] c is 3x10^8m/s and is defined as a constant(teh speed of light in a vacuum)
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13-03-2006, 09:28
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#3
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Resident Waffler
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Re: if a car
Quote:
Originally Posted by entwisi
I don't suppose this post goes any way to dispelling teh idea I'm a geek now does it?
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Nope
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13-03-2006, 10:06
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#4
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Senior Member+
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Re: if a car
Quote:
Originally Posted by entwisi
there is no answer to this question unfortunately(infinite energy required for your car to reach 'c' [1]m/s),
If you were close to c, effectively the wavelength of the reflected light would be doppler shifted well into UV so you wouldn't 'see' anything. in the UV spectrum things would appear rotated.
I don't suppose this post goes any way to dispelling teh idea I'm a geek now does it?
[1] c is 3x10^8m/s and is defined as a constant(teh speed of light in a vacuum)
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Thanks entwisi that just went right over my head.
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13-03-2006, 10:21
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#5
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God Member
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Re: if a car
OK, heres a nice article with pictures
http://www.itp.uni-hannover.de/~drag...ge/stone1e.htm
Bit 'involved' if you read the words but looking at the pictures you will get an idea how stuff would get distorted
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13-03-2006, 12:30
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#6
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Give, give, give member
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Re: if a car
Quote:
Originally Posted by chav1
if a car was to travel at the speed of light what would happen when you switched the headlights on ...?
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You'd lose your licence, don't try it.
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'If you're going to be a Kant, be the very best Kant there is my son.'
Johann Georg Kant, father of Immanuel Kant, philosopher.
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13-03-2006, 12:43
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#7
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Administrator
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Re: if a car
Quote:
Originally Posted by garinda
You'd lose your licence, don't try it.
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How, Gatso's are not fast enough. They tested one on Top Gear, I think you had to do 160 or 170mph before it could not get you.
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13-03-2006, 13:04
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#8
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Re: if a car
Thats only gatsos though, forward facing lasers are good into 300mph. above that its pretty clear that you are speeding and the coppers say so is enough. They don't have to give an exact speed.
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13-03-2006, 16:48
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#9
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I am Banned
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Re: if a car
Quote:
Originally Posted by entwisi
Thats only gatsos though, forward facing lasers are good into 300mph. above that its pretty clear that you are speeding and the coppers say so is enough. They don't have to give an exact speed.
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gotta catch me first
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13-03-2006, 18:36
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#10
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God Member
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Re: if a car
Quote:
Originally Posted by chav1
if a car was to travel at the speed of light what would happen when you switched the headlights on ...?
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You'd meet yourself coming back.
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Under democracy one party always devotes its chief energies to trying to prove that the other party is unfit to rule - and both commonly succeed, and are right.
Do not take life too seriously. You will never get out of it alive.
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13-03-2006, 21:57
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#11
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Beacon of light
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Re: if a car
The light of the headlights would light up your posterior!
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The world will not be destroyed by evil people...
It will be destroyed by those who stand by and do Nothing.
(a paraphrase on a quote by Albert Einstein)
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13-03-2006, 22:09
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#12
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Re: if a car
What would happen? you'd crash of course, you wouldn't be able to see where you was going, as your travelling at the same speed as the light coming off the bulbs you'd be there before the light, therefore it would be dark, and you'd crash.
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14-03-2006, 10:15
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#13
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Re: if a car
Ah but you miss Einsteins theory of Relativity states that light must still travel at the same speed in all frames of reference so the light would leave you the same, the major problem would be in viewing the reflected light due to the doppler shift taking the 'visible' light and shifting it into UV. So you 'could' see if you were able to 'see' in the UV spectrum.
However as teh link Iposted earlier shows what you 'see' would be surreal to say teh least.
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14-03-2006, 14:30
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#14
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Resident Waffler
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Re: if a car
You'd still crash because you'd be travelling faster than the light coming towards you from other vehicles, stationary objects etc (which is how we see things) so you wouldn't see them and you'd crash into them.
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14-03-2006, 14:32
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#15
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God Member
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Re: if a car
Quote:
Originally Posted by chav1
if a car was to travel at the speed of light what would happen when you switched the headlights on ...?
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Another fan of Brainiac:Science Abuse, then?
Jon Tickle's a legend...
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