Black Grating In The Microwave
On the microwave door, you will see the Faraday shield. This black grating prevents the electromagnetic fields from coming out and warming people! It also keeps these fields inside the oven to heat your food.
Black Grating In The Microwave
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Dimples On Golf Balls
Golf balls have dimples on the surface, so they are not really round. It turns out that the nicks and dents let the balls travel further thanks to the turbulence. It is better to use than perfectly round ones!
Dimples On Golf Balls