| Answer | Crossword Clue |
|---|---|
| XENONS | Flash tube elements |
| DIODE | Electron tube with two elements |
| TRIODE | Vacuum tube with three elements |
| Answer | Crossword Clue |
|---|---|
| XENONS | Flash tube elements |
| DIODE | Electron tube with two elements |
| TRIODE | Vacuum tube with three elements |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.