Because the primary is right handed.
I enjoy asking my grandkids why mirrors reflect left to right and not top to bottom.
I enjoy asking my grandkids why mirrors reflect left to right and not top to bottom.
Hold a written word in front of your eyes to read it.
Now flip it to the mirror to read the reflection:
Did you flip it horizontally? Then it reflected left-to-right.
Did you flip it vertically? Then it reflected top-to-bottom.
Someone saying that a mirror swaps left and right is comparing it to a photograph, and only because we, as bipedal creatures, really prefer to orient images of other humans with heads up.
This was my small "mind expansion moment" for today. Thanks!
This sub-thread is becoming unfairly more interesting than the main conversation at this point.
Nomenclature is just a convention of convenience and can be ever so judgemental.
Particle / anti-Particle ... way to lead the jury, hey?
What we do know is that when Bob walks up to a mirror he sees adastra22.
The glass is likely there to stop them touching and spawning a new universe.
And it would revolutionize our current understanding of physics to find out that p = p̄