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Best Buy Black Friday 2020 deals available now: $160 Powerbeats headphones, $130 Samsung soundbar and more to come - CNET

by NEP-NEWS नवंबर 18, 2020

A few items are on sale now, but the big discounts start Nov. 22.

New research reveals that applying a magnetic field to a chiral metamaterial can change the way it polarizes light — ScienceDaily