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will always be left-handed, independent of the spin ofthe Cobalt nucleus. What handedness would the positron be in anti-Cobalt decay:C60→Ni59+e++ν?Page 1/2
e) By holding it up to the mirror, you can see that your calcite crystal violatesparity. This allows calcite to have a different index of refraction for left- and right-circularlypolarizedlight,whichcausesthedoublingyouseewhenyoulookthroughit.Unfortunately, it is the phaseof circularly polarizedlight whichrotates, and phases by themselves are not observable. How can you use calcite toassociate polarizations of light with the observable directions clockwise/counter-clockwise?f) If you are talking to aliens on the telephone (i.e.with light only), tell them how touse nuclearβdecay to tell clockwise from counterclockwise. For this, you will needto figure out how to relate theLinψLto “left” in the real world. You are allowedto assume all the materials on earth are available to them, including things likeCobalt, calcite and lasers.g) If you meet those aliens, and put out your right hand to greet them, but they putout their left hand, why should you not shake? (this scenario is due to Feynman).