| RADIO ANTENNAS—CREATION AND BEHAVIOR OF RADIO WAVES |
1943 |
Castle Films |
11 min |
16mm |
|
Sound |
| RADIO RECEIVERS: PRINCIPLES OF RADIO RECEIVERS |
1945 |
Castle Films |
17 min |
16mm |
|
Sound |
| VACUUM TUBES: ELECTRON THEORY AND THE DIODE |
1945 |
Castle Films |
16 min |
16mm |
|
Sound |