4 ms·

Could you link to anything about the vacuum tubes? I am one of the people that didn't realize that was a thing.

• mzs 5y ago
  You can see in the diagrams toward the end that likely four tubes per fuze were used in WWII. https://maritime.org/doc/vtfuze/index.htm https://maritime.org/doc/vtfuze/index.htm
• dogma1138 5y ago
  https://en.m.wikipedia.org/wiki/Proximity_fuze https://en.m.wikipedia.org/wiki/Proximity_fuze