"The electrons would have to bump their way through them

[Doc B]

like midgets in a subway crowd."

"These aroused monkeys throwing pebbles at a target through a shutter, ably portray what goes on in a vacuum tube".

Awesome, politically incorrect explanations of how vacuum tubes work, narrated by Lowell Thomas-

https://youtu.be/_-JzxX75oYc

 

[Thermioniclife]

Outstanding Doc. There are some great vids regarding Mullard tube manufacturing from the raw ores to a finished tube. I'll try to add a link.

 

[2wo]

Now I can't get past the Mid Atlantic thing ...John

 

[oztayls]

Midgets or midges. Referring to those annoying swarming insects I would think, not the derogatory term for short people.

 

[Doc B]

It's clearly midgets with a hard t. Listen for yourself at 7:01. In the context and for the time it makes perfect sense.

 

[johnsonad]

That was great! Thanks, Doc for posting.  If I could go back in time and place an order for some 300Bs............