The legal guidelines of physics obey sure symmetries and defy others. It’s theoretically tempting so as to add new ones, however actuality doesn’t agree.
If you wave at your self within the mirror, your reflection waves again. However biologically, there are lots of methods it’s painfully apparent that your reflection is basically totally different from you. If you elevate your proper hand, your reflection raises its left. For those who have been to look at your physique with X-rays, you’d discover your coronary heart is within the center-left of your chest, however in your reflection, it’s within the center-right. If you shut one eye, your reflection closes its different eye. And whereas most of us are largely left-right symmetric, any obvious variations will manifest within the fully reverse vogue for our mirror-image counterpart.
You would possibly assume that is solely a property of macroscopic objects made out of enormous collections, or composites, of elementary particles. Because it seems, nevertheless, the Universe is just not symmetric at even an elementary stage. For those who permit an unstable particle to decay, you’ll uncover many elementary variations between the allowable decays within the Universe and the decays you’d observe within the mirror. Sure particles, like neutrinos, solely have left-handed variations, whereas their antimatter counterparts, the antineutrinos, solely are available…
