Your microwave still has a tube, possibly two if it's a VFD. X-Rays are still generated by tube. The Korg 6P1 NuTube is a modern tube. RADAR is still tube. Kystron, Magnetron, and TWaTs.
etc. etc.
Your microwave still has a tube, possibly two if it's a VFD.
X-Rays are still generated by tube.
The Korg 6P1 NuTube is a modern tube.
RADAR is still tube. Kystron, Magnetron, and TWaTs.
etc.
etc.