Recent content by Santural

And so Santural understood the question. And so he understood the answer. And so he was happy again.

...:bugeye: Would someone explain paw's question and Jesse's answer? My thirst for knowledge drives me on!:confused: :confused: :confused:

Gotcha! Thanks for the formula!

Thanks! I understand, but let me clarify in case of any errors: -Simultaneity is true only to a certain rest frame. -In any other rest frame, observers would not experience similar simultaneity as the other frame. Thanks! And my mistake, the Speed of Light shall be for light alone. P.S...

Slightly changed it for better understanding. A rocket ship traveling left to right and near the speed of light relative to the Earth observes two lights flashing on Earth (simultaneously). If the rocket observer is directly between them when they flash, the observer sees the one on the right...

Well, in that case, let's imagine the train is moving at 0.8886c.

True. So from your question, pgcurt, I learned something new. And to the posts below: Thanks for the embedding diagrams! That answers my deleted question.

Simultaneity Let's imagine there is a train moving at the speed of light. When in the middle, two lightning flashes appear on it's left and right. Why is it that it sees the right flash before the left? And if it is moving left to right, why does it see the left before the right? It is to...

...:rolleyes: hehe...um...:-p ...really, just um...hehe...my bad... I guess I was being a LITTLE dumb there, sorry.

Right! Thats part of what I need. However: Wikipedia says: (I added the bold). What is that epsilon? Where is 0.5 derived from?

I looked up Twin Paradox, and I understand the concept of time in SR, and also understand the Einstein synchronization convention concept, but now there is just something I don't get here: I looked at twin paradoxes and apparently you must use the Lorentz factor (or it's inverse, anyway) to...

Ok, what you're doing here is using Earth time as time for the spaceship (base time), which you simply can't, because time on Earth does not apply for every journey. The two clocks will read different, because they don't account for the geometry of the journey, or the speed. Let me quote a reply...

Before anything else, let me say I'm not a physicist by profession, and if I sound ignorant, correct me rather than ignore. I really might be wrong. All I can say, however, is that you really can't say that the brother in the spaceship traveled one Earth year in one month. It would be one Earth...

I understand. So it the path itself (its geometrical structure) which affects the time. Another question is, why is it that when one travels at the speed of light, let's say, to Neptune and back, why is it that millions, possibly billions of years have passed on earth? I would have thought...

This answers quite a few of my questions. This is what I infer: So time is completely relative to another "point." There is no "grand cosmic time" and time can be measured only relative to another place.