evergreen (Page 40)

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Pectin: not just for jelly

Pectin: not just for jelly

By Aki Kamozawa and H. Alexander Talbot

A burning pile of magnesium expelling white smoke against a dark blue background, with a fire extinguisher nozzle nearby setting it on fire.

Let burning metals lie

By Theodore Gray

A DIY pocket theremin.

Build a pocket theremin on the cheap

By Dave Prochnow

A person striking a block of plastic with a hammer, creating white lightning against a blue background.

Gray Matter: Trap lightning in a block

By Theodore Gray

A person wearing white work gloves striking a match on a light brown surface against a blue background.

Making a perfect match

By Theodore Gray

A person purifying silicon in a glass bowl. Top: burning magnesium in a mushroom cloud of white smoke; middle top: burning hydrogen as a flame; middle bottom: burning silane gas as white bursts; bottom: falling silicon particles.

Making silicon from sand

By Theodore Gray

Liquid nitrogen vanilla ice cream in a goblet glass with a strawberry on top and water vapor all around it.

Microcrystalline in 30 seconds

By Theodore Gray