To know how polarized sunglasses function, one needs to first examine the phenomenon known as polarization, and how light works overall. While light can be mathematically described as either a wave or a particle (known as the wave-particle duality), in…
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The situation is a familiar one. You’ve been single for a while, dating a bit. You still talk to the ex occasionally, have coffee here and there, try to pretend like it’s not incredibly awkward because one of you clearly…
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You find yourself in the following situation: at a club, bar, restaurant, on the street, or at home, someone grabs one or both of your wrists. The grip is tight, and they may or may not be pulling on you….
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In general, if an attacker applies a choke to your neck, the intention is to kill you. There are two primary dangers in a choke: strangulation and suffocation. Strangulation occurs when the blood flow to the brain is cut off,…
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