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Subject:
e=mc squared wrong?
Category: Science > Physics Asked by: azakai-ga List Price: $10.00 |
Posted:
14 Dec 2005 07:50 PST
Expires: 13 Jan 2006 07:50 PST Question ID: 605720 |
If I launch a tube full of water from earth or the moon or a space station off of a rail and it gradually increases in velocity to pass the speed of light by exponential gain...so it speeds up to the speed of light to the 10th power- then considering water is a non compressible fluid - hydraulics...will the water indeed turn into energy or will it be water going really fast? And what will it look like when it slows down again? | |
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Subject:
Re: e=mc squared wrong?
Answered By: hedgie-ga on 22 Dec 2005 17:34 PST Rated: |
Azakai Regarding your method: "I think we know deep down that we can travel at high speeds much faster than the speed of light" This 'deep down' may work in religion, but is not a reliable guide in science. Most people who did read books I recommended above, know that concept 'faster then light' is not even well defined in current theory. Both up and down, deep and shallow. Most terms in science need to be defined so that the apropriate experiments may be performed. That - the connection to experiment - provides the meaning. Ultrasonic speed is and was well defined concept since Ernest Mach http://en.wikipedia.org/wiki/Ernst_Mach Speed of light (in vacuum) is also defined http://en.wikipedia.org/wiki/Speed_of_light Attempts to measure very high speeds of actual objects http://galileoandeinstein.physics.virginia.edu/lectures/spedlite.html did lead to the current theory. In that theory(STR) the terms describing your 'deep down' feelings do not correspond to any experiment. Hedgie | |
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azakai-ga
rated this answer:
I gave you a high rating but I would have liked to seen some more forward thinking instead of old research... |
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Subject:
Re: e=mc squared wrong?
From: ansel001-ga on 14 Dec 2005 17:11 PST |
According to the theory of relativity, the mass of an object increases without limit as it approaches the speed of light. Therefore no amount of energy could accelerate a mass to the speed of light, let alone beyond it. |
Subject:
Re: e=mc squared wrong?
From: azakai-ga on 15 Dec 2005 07:52 PST |
I guess what I am wondering is why the current theory includes alchemy - lead does not turn to gold as far as I know so why does mass turn to energy? I said gradually increases in speed from calculus - so the rate of acceleration doesn't turn you into flat molecules... Think in the frame of reference of a closed container accelerating below the g forces that will crush the steel tube...take it to its limit structurally then acclerate it as fast as is universally possible - which - why is there a limit too? That is not just unreasonable but against all of the test pilots and big thinkers mindset. YOU CAN'T GO FASTER than light in the space time continuum. weird |
Subject:
Re: e=mc squared wrong?
From: scubajim-ga on 15 Dec 2005 11:18 PST |
While I agree that it seems weird that you can't accelerate past the speed of light that is the current state of the art. It is understood that you are talking about a reasonable acceleration (eg 1G). Yes, as you go faster and faster your mass increases. |
Subject:
Re: e=mc squared wrong?
From: toufaroo-ga on 15 Dec 2005 21:46 PST |
Azakai, I looked at one of your other questions, and I understand where you are coming from. After all, it would make sense that if you give something a constant acceleration, it will eventually increase in speed to beyond the speed of light. However, and this is a big however, you have to separate classical, or Newtonian Mechanics with that of Relativistic Mechanics. The two work entirely differently. There are times that you use one and times you use the others. Before we go into specifics of light, let's discuss sound, because there are a lot of parallels and it's easier to understand. When a fluid (gas or liquid) is traveling faster than the speed of sound, it behaves entirely differently than the same fluid traveling below the speed of sound. The equations that describe fluid motion are completely different. You can see this by looking at a rocket nozzle. When combustion occurs, the gas speed is less than speed of sound. So, you decrease the nozzle area, and this speeds up the gas flow. Makes sense -- think of a garden hose...you put your finger over the end and you can increase the flow speed and squirt people....but once it reaches the speed of sound, the opposite is true. Once that gas reaches the speed of sound, an INCREASE in area is required for the gas to further accelerate. This is why you have that bell-curved rocket nozzle shape. First the cross-sectional area gets smaller, then bigger. The whole point of what I just wrote is to know that you can't have one set of equations that define everything everywhere everytime. Going back, this is why we have Newtonian Mechanics and Relativistic Mechanics. As you approach the speed of light, Newtonian Mechanics no longer are true for most objects. If you want to correctly define how these objects travel, you have to switch to Relativistic Mechanics. Going back to your rail... You can accelerate up to some point, and you can use Newton's Laws up to that point. Afterwards, Newton's Laws would no longer apply. Read my response to your other question; you might like that answer more. -toufaroo |
Subject:
Re: e=mc squared wrong?
From: iang-ga on 16 Dec 2005 09:33 PST |
>I guess what I am wondering is why the current theory includes alchemy - lead does not turn to gold as far as I know so why does mass turn to energy? A better anology would be turning diamond into graphite - they may look completely different, but they're realy the same thing in different forms. Ian G. |
Subject:
Re: e=mc squared wrong?
From: egon_spangler-ga on 28 Dec 2005 12:50 PST |
Also there is no such thing as "Non Compressable" when you get out on the edge of "normal" space time. On another note. If you believe that mass increases infinately and things with more mass have more inertia then things traveling infinately close to the speed of light have infinately high inertia which not only keeps them moving at that speed but also causes them to resist further changes in velocity. A different point would be that if you ever could accelerate something to the full speed of light it's mass would become infinate and so would it's inertia. Your problem would then be how do you stop the object? :) |
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