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16
votes
5answers
900 views

Could cell-phone radiation cause cancer?

It is very crucial that I ask whether it could and not whether it does. I do not mean to be the least controversial. To my surprise, having read "Physics for Future Presidents" by Richard Muller last ...
0
votes
2answers
74 views

X-ray shielding

X-ray shielding, why is lead used to shield us when taking X-ray images? As far as I remember (but can't find it on wikipedia ... ), the deflection on (high energy) photons increases the more heavier ...