Tube Talk Part 2 - Are Vacuum Tubes Radioactive?
49:09
Tube Talk - Pentode vs. Beam Tetrode and how they work
17:14
Another Look at an X-Ray tube: Part 1
12:06
My vintage vacuum tubes are radio-active!
25:27
Vacuum Tubes/Valves by Mullard ~Manufacture for Audio TV Radio
19:37
Adam Savage's Vacuum Tube Collection Gets CT Scanned!
15:53
Vintage Car Radio Vibrator Refurbishment
9:14
Radioactive Vacuum Tubes
33:34