Recent content by uniqueland
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High School Train traveling near light speed
A train is traveling around the Earth at just under light speed. Light would circle the Earth around 7 times per second so let's say this train cricles the Earth 6 times per second. There is a physical ticker on the track of the train that records revolutions. Each time the train makes one...- uniqueland
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- Light Light speed Speed Train
- Replies: 18
- Forum: Special and General Relativity
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High School Train platform -- light speed and time quandry
fair enough. your example of an orbiting spaceship is probably better than my train going around the Earth but I used the train example because both the observer at the train platform and the passenger on the train are both looking at the train station counter, triggered by the physical bar...- uniqueland
- Post #13
- Forum: Special and General Relativity
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High School Train platform -- light speed and time quandry
yes of course i meant to say near the speed of light. and yes i understand the corrections you pointed out but I was trying to get to the quandry point I was focused on and ignoring the myriad of issues that there would actually be with the phyicality of such an event occurring- uniqueland
- Post #12
- Forum: Special and General Relativity
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High School Train platform -- light speed and time quandry
so you are saying that the distance is contracted to such a tiny number, that to travel back and forth (or around if you ignore the circular issues) would be that the train, traveling at the speed of light would achieve the same amount of revolutions in ten minutes, considering the extreme...- uniqueland
- Post #9
- Forum: Special and General Relativity
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High School Train platform -- light speed and time quandry
My point is that I understand, ignoring the multitude of impossible issues involving centrifugal forces and rotational issues that arise when traveling in a circle and ignoring the obvious acceleration and deceleration issues, assuming instant acceleration as if the train was like a beam of...- uniqueland
- Post #8
- Forum: Special and General Relativity
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High School Train platform -- light speed and time quandry
Summary: how can a train traveling at light speed, travel at two different speeds being the same train, depending upon whether you are on the train platform or in the train You say good bye to your friend at the train station. You get into train that will travel at just under light speed...- uniqueland
- Thread
- Light Light speed Platform Speed Time Train
- Replies: 14
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
So then, if we could ever figure out how to practically travel just under the speed of light, we would be able to theoretically travel to any spot in the universe we chose with the time it took to get to that spot no longer being a factor, since, while it may take thousands or even millions of...- uniqueland
- Post #22
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
Then my son at the train station viewing an webcam onboard my light speed train would see me as all but frozen with it taking maybe a month for me to make a smile whereas me viewing a webcam of the train station would show people moving around in a complete blur because I would see them moving...- uniqueland
- Post #19
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
So then basically I would see the train station going by at what the amount of revolutions would be if I were traveling at just under light speed for 30 years, even though my watch onboard my light speed train would only show that I had been on the train for a few hours so it would seem to me as...- uniqueland
- Post #17
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
thanks George. I hadn't considered that my destination to the end of the universe would be 13.7 billion years older by the time I got there too and may not be there anymore, just like the Earth and milky way might be when I returned 27 billion Earth years later. But what about my window...- uniqueland
- Post #14
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
Thanks for your reply. But I still do not understand the paradox of how can my onboard counter, count 30 years worth of revolutions around the Earth when, to me onboard the light speed train, I will feel that I have only been on this train for a few hours, and, if I multiply the number of...- uniqueland
- Post #12
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
So, let's take this to the next level. Are you saying that, for example, I will feel like I just got on the train a few hours ago, or maybe a day ago, and maybe I will watch a couple of two hour movies on my ipad, which will take 2 of my hours each to watch but when my train comes to a stop, 30...- uniqueland
- Post #10
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
T 08:28 AM uniqueland This Message is Moderated If I am on this train traveling at 99.99% light speed around the circumference of the Earth for 30 Earth years. My watch, which is synchronized to count each revolution my train makes around the earth, will show those revolutions blurring by...- uniqueland
- Post #8
- Forum: Special and General Relativity
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Graduate Speed of the light and dilation of time
If I am 35 years old and I am in a train sitting in a special tube that is built around the entire circumference of the planet. Putting aside all of the questions of practibility and g forces and the like, if the train I am in accelerates to just a hair under the speed of light and I travel on...- uniqueland
- Thread
- Dilation Light Speed Time
- Replies: 289
- Forum: Special and General Relativity
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Graduate Travel in space to Alpha Centuri
I heard that there was some theoretical propulsion method that grabbed the material necessary for fuel from space as you went along. Did I understand that correctly? If so. and making the enormous assumption that such a propulsion system could actually work in practice, wouldn't that solve the...- uniqueland
- Post #16
- Forum: Special and General Relativity