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1. ### Can Anything Travel Faster Than Light - Explained Simply

If you rework what I did here with another distance in place of 1/2 of a light year: https://www.physicsforums.com/showpost.php?p=1584381&postcount=18 You will find that the speed you get is the same. So, distance doesn't matter with my calculations either. That doesn't prove that the distance...
2. ### Can Anything Travel Faster Than Light - Explained Simply

Tell me, how do you measure velocity? EDIT: This is the main purpose of Lorentz transformations: http://en.wikipedia.org/wiki/Lorentz_transformation#Spacetime_interval The idea is that the Lorentz transformations allow you to convert measurements from one observer to another when time is not...
3. ### Can Anything Travel Faster Than Light - Explained Simply

Why? Because then the distance between two events in space-time would not be the same for all observers. The theory of special relativity postulates that c is constant (it did not prove it) to make the math work out nicely.
4. ### Can Anything Travel Faster Than Light - Explained Simply

Of course you don't with the Lorrentz transformations. This is because each planet sees the other planet as being closer than it really is. Notice how in this example below, the perceived speed is lower than the actual speed:
5. ### Can Anything Travel Faster Than Light - Explained Simply

Let me rephrase what I said: Scenario 1: Planet A is at location 0 Planet B is at location -1ly Planet A sends a beam of light at c towards Planet B Planet B moves towards Planet A at close to c ================ Planet B will receive the light in a little over 1/2 year Scenario 2: Planet A is...
6. ### Can Anything Travel Faster Than Light - Explained Simply

Now, we could just as easily have a planet going very close to c towards us (only slightly less) instead of the light. Okay, so now if two planets 1 light year apart were traveling as close to c as possible towards each other, they could meet in only a little more than half of a year. Let's say...
7. ### Can Anything Travel Faster Than Light - Explained Simply

The way I see it, holding c constant is just as arbitrary as making time universal. I think it's silly to say that two objects, each 1/2 a light-year away from earth, one traveling at 2c/3 in one direction towards earth, and another traveling at 2c/3 in the other direction towards Earth would...