[inforoots] cooling core

[Stan Sieler]

Hi,

A friend from Germany wrote me:

> This reminds me of what happpend around 1968. We at Max Planck Institute
> at Munich had an IBM 7090 with about 64 K memory - magnetic core memory.
> The memory was oil-cooled. We often opened the door to have the hot side
> of the oil cooled by the air conditioned room. Our colleques from
> Heidelberg saw this and did the same. However their memory was air
> cooled. So opening the door disturbed the air flow and blew the memory.
> A very costly repair!

-- 
SS