u/Dear_Ad2718

Image 1 — turns out some of the first tubes in my collection are radioactive (DM160 indicator)

Image 2 — turns out some of the first tubes in my collection are radioactive (DM160 indicator)

turns out some of the first tubes in my collection are radioactive (DM160 indicator)

the DM160 was also used in early transistor computers. i also think that the radiation is from either a thoriated filament or the fluorescent coating of the anode. i don't think it was documented radioactive online too (like the 313C, 427 and 6141)

>!no, i'm not an old person.!<

u/Dear_Ad2718 — 6 days ago

▲ 16 r/peopleplayground

very nice. can only be sold to people who can explain thermionic emission within a quarter of a second

u/Dear_Ad2718 — 22 days ago

▲ 74 r/roblox

quite the fine team. i don't think this counts as a meme, but if so please tell me.

u/Dear_Ad2718 — 24 days ago