260: The Glass Necklace

Explain xkcd: It's 'cause you're dumb.
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The Glass Necklace
Well, for some value of 'actually work'.
Title text: Well, for some value of 'actually work'.

Explanation

The heat from a lightning strike can fuse sand into glass. When this occurs in nature hollow tubes called fulgurites are formed. Cueball uses this knowledge and a spark of handiness and ingenuity to create an entirely home made glass necklace for Megan. Here is some inspiration to do it yourself.

Trancscript

[A man is drawing a diagram of a cylinder with electrical terminals on either end.]
[The man is shown at a workbench making the device in a workshop.]
[He kneels down on a beach and scoops up sand.]
[He pours the sand into the cylinder.]
[He ties a spool of string to one end of the cylinder, and ties a deflated weather balloon to the other end.]
[The weather balloon is inflated, and raised up into the clouds as thunder rumbles.]
[The end of the string is tied to a stake in the ground, and lightning is flashing in the background.]
[Lightning hits the balloon, travels through the cylinder, and fuses it's contents.]
Later
[The man follows the string to find the cylinder.]
[He detaches it, opens it, removes a solidified piece, and admires the piece.]
[He takes the stone to a jeweller.]
[The jeweller examines, grinds, and sets the now-shining stone in a necklace.]
[The man approves of the final result.]
[He gives it to a woman.]