Letter (Astounding, October 1938): Burks' Gravitic "Lines of Force" Are as Sound a Concept as the Magnetic "Lines of Force" Electrical Engineers Commonly Use.
| First published | October 1938 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1938 |
|
Astounding Science-Fiction, October 1938 | Street & Smith Publications, Inc. | MAGAZINE | 158 |