0:00
Hello.
00:01
So in this problem, we need to state which of the following statements is or are true, according to einstein's postulates of special relativity.
00:12
So let's start by the first one.
00:14
Every observer and every reference frame measures the same value for the speed of flight.
00:19
This one is definitely correct and it's the main postulate of einstein's theory of special relativity that any observer will have the same speed for light, which is approximately 3 times 10 to the power of 8 meters per second.
00:36
Now let's move to the second one.
00:38
Moving clocks appear to run slowly.
00:42
This one is also correct and it goes according to the formula that the time that is measured in a moving frame of reference with a speed v can be measured according to the formula gamma multiplied by the proper time where gamma is equal to 1 over the square root of 1 minus v squared over c squared and this one is usually larger than 1.
01:10
So the time will appear to run slowly if the frame is moving with that certain speed.
01:18
So this one is also correct...