RE: Are there Antimatter Regions inside our Hubble Bubble? (Particle Physics Series – Episode 4D)
Hi @jaineel. You are confused... means I didn't do a good job :-(!
Let me try again :-)
I do not have a rubber band with me. I'll make a diagram for you instead :
Imagine a rubber band with 3 points, A, B and C. Points are distant from each other by 1 meter. So AB = 1m and AC = 2m. Now pull the rubber band to extend it to twice its size (The red arrow represents the pulling force). Suppose it took you 1 second to do so.
The distances are now AB = 2m and AC = 4m.
Speed is distance covered over time. Relative to A, B covered 1 m in 1 second, so its speed is 1 m/s. Still relative to A, C covered 2 meters so its speed is 2m/s.
This is because each meter of a length has increased by an extra meter every second. So if you extend a dimension of space (here the rubberband), the speed of recession of any point of that space relative to a reference will be proportional to the distance from that reference point.
In cosmology, this is referred to as Hubble’s law.
Hope it clarifies!
This makes sense @murphy
I had the same issue comprehending with a rubber band but this has clarified me.
This is a great post. The simplicity of explanation amazes me.
Whether they exist or not, matter-antimatter explosions are not what I would however want to witness. :)
I'm following you now and I hope you also follow back. :D
Me neither, check around the section of that post for some amusing calculations about that: https://steemit.com/steemstem/@muphy/matter-and-antimatter-such-an-explosive-couple-particle-physics-series-episode-4b
I checked your profile, nice scientific articles you wrote. that made me follow you, but please do not request follow backs in comment (this strategy is really for losers: rise up man!)