clean code

Part 1 of an episode of the British educational TV series The Secret Life of Machines, about how vacuum cleaners work and their history. It mixes humor with explanation of household technology.

CNBC gets a tour of ASML's cleanrooms in the Netherlands to see how its roughly $200 million EUV lithography machines are built. It covers exploding molten tin, ultra-flat optics and why only one company can make these systems.

Reason TV profiles Elvis Summers, a Los Angeles musician who crowdfunded dozens of tiny homes for homeless people. City officials moved to remove them while pushing a multibillion-dollar housing plan.

Tom Scott visits the USPS Remote Encoding Center in Salt Lake City, where keyers decipher mail images machines cannot read. It shows the lengths taken to decode bad handwriting.

A 1973 AT&T training film made for new employees at Bell Labs' Holmdel Computing Center, when Unix was in its third version and running at 16 computer centers in the Bell System. It shows how users submitted jobs and used the center's machines.