Have you ever seen electrons? Watch this! I got an old Narva BR-2 cathode ray tube (Braun'sche Röhre) that was made for educational purposes. It has some Neon gas inside that makes the electron beam visible. The second tube in this video is a voltage regulator OD3A that also "glows" nicely. #electron #CRT #cathoderaytube #electronics #physics #science https://www.youtube.com/watch?v=mOAEv-jZarM