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3:06 PM
I've read that halogens can be used as initiators of free radical polymerization. Halogen_2 dissociates [with help of UV light] into Hallogen_dot radicals, and the radical initialize polymerization.
Are halogens used as initiators in the industry?
[No counting compounds like N-Bromosuccinimide (NBS), which releases Br_dot radicals.]
3:27 PM
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Q: Is Entropy time-symmetric?

UnknownIn quantum mechanical systems, fundamental laws are time-symmetric. But this does not hold good for entropy. If entropy was really time-symmetric it would violate the 2nd law of thermodynamics. At first I thought the question was really similar to Is time a measurement of Entropy? but then found ...


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