- 10

- 1

## Main Question or Discussion Point

I apologise in advance for my rather minimal knowledge of physics. Please assume that anything I write below is just my current understanding, and may very well be incorrect...

If so, what then happens if I accelerate Y to near light speed?

From the point of view of a stationary observer, do X and Y...

(a) Decay at the same time (relative to the stationary observer)?

(b) Last for the same length of time relative to their own inertial frame, so that Y decays after X?

If (b) is true, then does that allow us to predict exactly when Y will decay?

Are there suitable particles that would allow this to be done experimentally?

- Elementary particles decay into other elementary particles.
- When a a subatomic particle decays into a pair of other particles, entanglement occurs.
- According to special relativity, a particle accelerated to near light-speed will experience time much more slowly than a particle that is not accelerated.

If so, what then happens if I accelerate Y to near light speed?

From the point of view of a stationary observer, do X and Y...

(a) Decay at the same time (relative to the stationary observer)?

(b) Last for the same length of time relative to their own inertial frame, so that Y decays after X?

If (b) is true, then does that allow us to predict exactly when Y will decay?

Are there suitable particles that would allow this to be done experimentally?