Those are 7236 double triodes. Definitely a vacuum tube. Given the layout, I think that is a picture of the core memory amplifiers on the SAGE (AN/FSQ-7) computer.
Similar photo: https://americanhistory.si.edu/collections/search/object/nmah_334356 <https://americanhistory.si.edu/collections/search/object/nmah_334356> Tube data: http://tubedata.milbert.com/sheets/127/7/7236.pdf <http://tubedata.milbert.com/sheets/127/7/7236.pdf> -Jeff > On Aug 11, 2022, at 12:59, [email protected] <[email protected]> wrote: > > Am I the only one who thinks these are dekatrons, and therefore not vacuum > tubes? > > Does anyone recognize which early computer might have used these? It does > not look like the pictures I found online for the Harwell WITCH. > > Original air date: 11-05-21 > > Rebroadcast date: 08-09-22 > > Double Jeopardy category: Computer History > > $2000 clue: > > “These sealed glass predecessors of the transistor were vital components of > the early computers.” > > Jeff: “What are vacuum tubes?” > > Mayim Bialik: “Corrrect.” > > <Dekatron-TV.jpeg> > > > > > > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/9f965e74-397a-40a8-8dee-07d1a9d2e489n%40googlegroups.com > > <https://groups.google.com/d/msgid/neonixie-l/9f965e74-397a-40a8-8dee-07d1a9d2e489n%40googlegroups.com?utm_medium=email&utm_source=footer>. > <Dekatron-TV.jpeg> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/697FB531-7F22-4C9D-863C-72304A6AB775%40gmail.com.
