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faster than light?
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<blockquote data-quote="Harte" data-source="post: 25759" data-attributes="member: 443"><p><strong>Re: faster than light?</strong></p><p></p><p><div class='quotetop'>QUOTE(\"nate\")</div></p><p> </p><p>Nate, the speed of light ? is a constant and unattainable to anything that has mass.</p><p> </p><p>Below is a quote from <a href="http://www.timetravelforum.net/showthread.php?t=1234" target="_blank">http://www.timetravelforum.net/showthread.php?t=1234</a> that states some of the consequences of c being constant. Since I'm quoting myself here, a I took the liberty of making a few changes and addenda to the original for the purposes of clarity.</p><p> </p><p> </p><p> </p><p>In addition to the constriction of length and dilation of time, as you increase velocity, your mass increases. At c, the dilation of time completely stops the flow of time, the constriction of length shrinks your ship's length (measured along the direction of travel) to zero and the mass of everything goes to infinity. (All these things appear only to the observer, the traveler will notice none of them.) Infinity is a hard thing to deal with so let's talk about traveling at just a hair under the speed of light.</p><p> </p><p>At this very large speed, the mass of your ship is huge. The mass of your fuel is huge also, but both masses grow by equal percentages with any increase in speed. Remember, the thrust applied by your engine at full throttle is not subject to relativistic effects. Since the thrust remains constant as you accelerate, but the mass increases at the same time, eventually you reach the point where your engine is unable to put out enough thrust to accelerate anymore.</p><p> </p><p>Several years ago I remember reading about a new concept regarding thrust for a space ship called the ion drive. I forget exactly how it works, but the drive puts out charged particles at high speeds and the action-reaction results in a force of 1 newton ([1 kg-m]/s^2) being applied to the engine. The drive ran off solar power so no fuel was involved. A drive like this could be attached to an unmanned ship with maneuvering rockets for steering and set in orbit around the sun. Depending on the weight of this apparatus, the thing could approach lightspeed after enough time went by. It would be interesting, but dangerous and expensive, to see what would result from such an experiment.</p><p> </p><p>Harte</p></blockquote><p></p>
[QUOTE="Harte, post: 25759, member: 443"] [b]Re: faster than light?[/b] <div class='quotetop'>QUOTE(\"nate\")</div> Nate, the speed of light ? is a constant and unattainable to anything that has mass. Below is a quote from [url=http://www.timetravelforum.net/showthread.php?t=1234]http://www.timetravelforum.net/showthread.php?t=1234[/url] that states some of the consequences of c being constant. Since I'm quoting myself here, a I took the liberty of making a few changes and addenda to the original for the purposes of clarity. In addition to the constriction of length and dilation of time, as you increase velocity, your mass increases. At c, the dilation of time completely stops the flow of time, the constriction of length shrinks your ship's length (measured along the direction of travel) to zero and the mass of everything goes to infinity. (All these things appear only to the observer, the traveler will notice none of them.) Infinity is a hard thing to deal with so let's talk about traveling at just a hair under the speed of light. At this very large speed, the mass of your ship is huge. The mass of your fuel is huge also, but both masses grow by equal percentages with any increase in speed. Remember, the thrust applied by your engine at full throttle is not subject to relativistic effects. Since the thrust remains constant as you accelerate, but the mass increases at the same time, eventually you reach the point where your engine is unable to put out enough thrust to accelerate anymore. Several years ago I remember reading about a new concept regarding thrust for a space ship called the ion drive. I forget exactly how it works, but the drive puts out charged particles at high speeds and the action-reaction results in a force of 1 newton ([1 kg-m]/s^2) being applied to the engine. The drive ran off solar power so no fuel was involved. A drive like this could be attached to an unmanned ship with maneuvering rockets for steering and set in orbit around the sun. Depending on the weight of this apparatus, the thing could approach lightspeed after enough time went by. It would be interesting, but dangerous and expensive, to see what would result from such an experiment. Harte [/QUOTE]
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