High-quality black-and-white photographs of large old machines and tools

[Jon]

Cyclotron particle accelerator. August, 1939.

Fullsize image: https://s3-us-west-1.amazonaws.com/h...n_fullsize.jpg



More: https://en.wikipedia.org/wiki/Cyclotron

[bruce.desertrat]

Cyclotron, huh? Where are the pedals? [gdr]

[Duke_of_URL]

Ah yes, Ernest Lawrence at U.C. Berkeley back in the day.

[jdurand]

Modern version heats a cup of tea in 30 seconds to a minute.

[Jon]

Inside a high-pressure steam drum.

Fullsize image: https://s3-us-west-1.amazonaws.com/h...m_fullsize.jpg

[mlochala]

Looks very dusty in there.

[12bolts]

That will be the oxide layer. Steam strips every last molecule of preservative from the surface of the steel. But the hot dry environment prevents corrosion forming. So you just get that thin layer of oxide that forms very quickly when the system is depressurized and moisture forms on the surface. A bit like degreasing steel with acid. If you dont apply something to the surface rust will form in minutes

[hemmjo]

Not sure what I am looking at in regard to the steam drum. Is that the inside of something like this?

[jdurand]

I figured we were looking at the flame chamber and the water was along the sides. ??

[Jon]

Steam condenser inside a generating station. 1943.

Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg