xyvch | When two observers are in relative uniform motion...

## 39

When two observers are in relative uniform motion and uninfluenced by any gravitational mass, the point of view of each will be that the other’s (moving) clock is ticking at a slower rate than the local clock. The faster the relative velocity, the greater the magnitude of time dilation. This case is sometimes called special relativistic time dilation.

For instance, two rocket ships (A and B) speeding past one another in space would experience time dilation. If they somehow had a clear view into each other’s ships, each crew would see the others’ clocks and movement as going too slowly. That is, inside the frame of reference of Ship A, everything is moving normally, but everything over on Ship B appears to be moving slower (and vice versa).

From a local perspective, time registered by clocks that are at rest with respect to the local frame of reference (and far from any gravitational mass) always appears to pass at the same rate. In other words, if a new ship, Ship C, travels alongside Ship A, it is “at rest” relative to Ship A. From the point of view of Ship A, new Ship C’s time would appear normal too.

## 39 notes

1. chris-who reblogged this from xyvch
2. jimmyjohnsswag reblogged this from xyvch
3. malpracticer reblogged this from koukouvayia
4. suddenly-home reblogged this from koukouvayia
5. koukouvayia reblogged this from xyvch
6. tequila-tekilla reblogged this from xyvch
7. boycottlife reblogged this from marinahanna
8. sassafrassarassum reblogged this from xyvch
9. bluekitties reblogged this from marinahanna
10. edgeofuncertainty reblogged this from narc0lepticsl0th
11. narc0lepticsl0th reblogged this from streetfightinman
12. streetfightinman reblogged this from marinahanna
13. marinahanna reblogged this from xyvch
14. dammitjim-imaphysicistnotadoctor reblogged this from xyvch
15. tenderonlytoone reblogged this from xyvch
16. dayinknight reblogged this from xyvch
17. xyvch posted this