Silly speed of light question..
Discussion
Cheers anyway. 
gh0st said:
Speed of light is not possible as for reasons that thebluemonkey explained.
But who knows? light travels at that speed, so why not other things.
Grouch.
Because a photon has no mass therefore does not need infinate energy to achieve the speed of light.
That is most probably true - but some physicists now believe that a photon may have mass, and if true it may have quite profound implications. There are also theoretical particles even smaller...
Anyhow, I'm kinda reaching the limits of my knowledge here. To go further would require some very long posts and someone much more informed than I.
anonymous said:
[redacted]
Actually I do agree with you. At our present time with our current knowledge of physics, travelling faster than light is impossible.
However, never say never, and there may be ways around the light barrier that involve inter-dimensional travel and bending space-time.
In actual fact, not totally dissimilar to warp drive, but without actually moving. The concept is, in a nutshell, that space-time moves around you instead...
I think if you were travelling at the speed of light and you switched your lights on there might be a little glow just in front of you. Either that or it would just be completely dark.
Or you could say if you were travelling at the speed of sound and you switched the stereo on what would happen? I think that you wouldn't hear anything, and then the sound would catch up with you and there would be a sonic boom.
So I think that in the first question, there might be some kind of solar boom, if that were possible.
Anyway, there would be a gatso nearby, and you'd get zapped. But of course, TG proved that if you go too fast the gatso doesn't pick you up or it trys to photo you and it's too slow or somwething, so that wouldn't really matter.
I'm talking to myself aren't I
Or you could say if you were travelling at the speed of sound and you switched the stereo on what would happen? I think that you wouldn't hear anything, and then the sound would catch up with you and there would be a sonic boom.
So I think that in the first question, there might be some kind of solar boom, if that were possible.
Anyway, there would be a gatso nearby, and you'd get zapped. But of course, TG proved that if you go too fast the gatso doesn't pick you up or it trys to photo you and it's too slow or somwething, so that wouldn't really matter.
I'm talking to myself aren't I
The light has its frequency raised (blueshifted) Doppler style. I think it is something to do with the energy of the light being increased by a significant amount which only becomes percievable at very large velocities.
As E=MC^2 assuming mass=0, a photon will have energy of such and such, by also knowing that E=hF where h=plancs constant you can say hF=MC^2, (F=frequency), so you need the excess (speed over light) speed and you whack it in that equation and it gives you a frequency which you add to the original frequency (ies) and find out how much blueshifted it has got.
That is how I figure it.
As E=MC^2 assuming mass=0, a photon will have energy of such and such, by also knowing that E=hF where h=plancs constant you can say hF=MC^2, (F=frequency), so you need the excess (speed over light) speed and you whack it in that equation and it gives you a frequency which you add to the original frequency (ies) and find out how much blueshifted it has got.
That is how I figure it.
love machine said:
The light has its frequency raised (blueshifted) Doppler style. I think it is something to do with the energy of the light being increased by a significant amount which only becomes percievable at very large velocities.
As E=MC^2 assuming mass=0, a photon will have energy of such and such, by also knowing that E=hF where h=plancs constant you can say hF=MC^2, (F=frequency), so you need the excess (speed over light) speed and you whack it in that equation and it gives you a frequency which you add to the original frequency (ies) and find out how much blueshifted it has got.
That is how I figure it.
So essentially you wouldn't need to put blue bulbs in your fog lights because the blue shift would make them look blue anyway - wikkid dood! That is assuming that light from fog lights travels the same speed as 'normal' light - dubious IMO because they are so cool that they might be distorting the space time continuum.
So if you're travelling at or slightly above the speed of light, when you turn your lights on the light emitted can't escape the headlight reflector. So the light waiting to be emitted would build up in the headlight unit, converting into heat and probably eventually causing meltdown...
Right, I'd better go and smoke a doobie and reconsider this spaced out idea...
alexkp said:
anonymous said:[redacted]
Is this to do with the constant velocity part of newtons laws ? or alot more complicated than that ?
This is Einsteinian physics, Newton does not really cover this - apart from any action having an equal and opposite reaction - which does realte to the problem of infinite speed = inifinite energy = infinite mass.
A vacuum means nothing can interfere with a particle/wavicle in either a negative or positive manner.
(BTW there is no such thing as a perfect vacuum)
A scientist is only right until someone who knows more proves him wrong.
For centuries Man thought the Earth was flat; also that it was the centre of the Universe. Both theories now proved to be a bunch of hooey.
To (mis)quote Tommy Lee Jones: 'Imagine what we will KNOW, tomorrow...'
loaf said:
thebluemonkey said:
anonymous said:[redacted]
Is this to do with the constant velocity part of newtons laws ? or alot more complicated than that ?
This is Einsteinian physics, Newton does not really cover this - apart from any action having an equal and opposite reaction - which does realte to the problem of infinite speed = inifinite energy = infinite mass.
A vacuum means nothing can interfere with a particle/wavicle in either a negative or positive manner.
(BTW there is no such thing as a perfect vacuum)
A scientist is only right until someone who knows more proves him wrong.
For centuries Man thought the Earth was flat; also that it was the centre of the Universe. Both theories now proved to be a bunch of hooey.
To (mis)quote Tommy Lee Jones: 'Imagine what we will KNOW, tomorrow...'
I do agree....kinda. But scientific knowledge is a billion times more advanced than it was even a couple of centuries ago. It is not as simple as to say it can all be "proved" wrong. That is very unlikely.
What is more possible is that exceptions to some laws of physics may be discovered that utilise exotic matter, or even the holy grail of the Unified Field Theory may be reached.
Gassing Station | General Gassing [Archive] | Top of Page | What's New | My Stuff