Crystals with Tyler Thrasher
SciShow Tangents
The History of Ice Rings
Golf courses started providing crates of wet sand that golfers could clump up and make a little peek for their ball. Ice skating is a beloved winter time activity, but sometimes people want to skate when it's not cold out or they don't live next to a suitably frozen body of water. The first of these ice rings named the Glaisharium was opened in London in 1844. It wasn't filled with frozen water, but a proprietary concoction made out of pig oil and which of these grains of crystal salt sugar or sand.
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