Radio Theory
name: label: Collection Creator
content: Clark, George Howard, 1881-1956
setName: label: See more items in
content: George H. Clark Radioana Collection
unitdate: label: Date
content: 1902-1946
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0055, Series 140
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents note
content: Series 140 contains articles; booklets; correspondence, 1906, 1907, 1909, 1918, 1921, 1936; diagrams; drawings; a graph of wave length and day range of Radio telegraph; journals; maps; news clippings; news releases; notes; periodical clippings; standards on radio wave propagation, 1942; studies; and technical instructions. This series concerns the theoretical discussions on transmission, reception, effect of different wave length, heavy-side layer effect, effect of different spark notes; and C.W. vs. damped wave for signaling by code. It is cross-referenced as to subject, author, and events mentioned.