10/5/535 01877543 Author(s): (Item 235 from file: 103) ERA-12-005078; EDB-87-005176 Ogle Title: Operation Sandstone. Nuclear explosions. 1948. Scientific Director’s report of atomic weapon tests. Annex 2, Part 4. Slowly varying light from an atomic explosion as measured with a photocell, Sandstone report No. 14 Corporate Source: Naval Research Lab., Publication Date: 28 Jul 1948 p 29 Report Number(s): AD-A-995313/4/XAB Document Type: Report Language: English Journal Announcement: EDB8611 Washington, DC (USA) Availability: NTIS, PC A0Q3/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: During the atomic bomb tests in 1948, it became of interest to measure thalight intensity from a bomb in the time interval of 0 to l second. The measurement was made from the AV-5 which was at a distance of 8.9 miles from the explosion. Since no external signal to trigger the oscilloscope sweep was available, it was necessary to use the light itself for this purpose, Two scopes were used: one with a linear sweep length of about 400 microseconds, and the second with an exponential sweep which was about a second long. Major Descriptors: *NUCLEAR EXPLOSIONS -- VISIBLE RADIATION; *SANDSTONE PROJECT; *VISIBLE RADIATION -- MEASURING METHODS Descriptors: EMISSION; SIGNALS; TRIGGER CIRCUITS Broader Terms: BLECTROMAGNETIC RADIATION; ELECTRONIC CIRCUITS; NUCLEAR EXPLOSIONS; PULSE CIRCUITS; RADIATIONS Subject Categories: 450202* Weaponry -- ({-1989) 10/5/536 (Item 236 EXPLOSIONS; -- Explosions & Explosives -- Nuclear -- from file: 103) 01877542 ERA-12-005077; EDB-87-005175 Title: Operation Sandstone. Nuclear explosions. 1948. Scientific Director’s report of atomic weapon tests. Annex 2, Part 3, Volume 3. Operation Sandstone measurements by NRL. Sandstone report no. 13, September 1947-September 1948 Corporate Source: Naval Research Lab., Washington, DC (USA) Publication Date: Sep 1948 p 286 Report Number(s): AD-A-995312/6/XAB Document Type: Report Language: English Journal Announcement: EDB8611 Availability: NTIS, PC Al3/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: This volume describes the nonelectronic equipment necessary to the Naval Research Laboratory’s participation in Operation Sandstone and provides a chronology of the project. The subject matter covered includes: ionization chambers; radiometry equipment used in the measurement of visible, ultraviolet, and infrared energy; photography used to record cathode ray tube traces; and transmission lines ~principally from the mechanical point of view. Major Descriptors: *NUCLEAR EXPLOSIONS; *NUCLEAR WEAPONS -- TEST FACILITIES ; *SANDSTONE PROJECT; *TEST FACILITIES -- IONIZATION CHAMBERS; *TEST FACILITIES -- RADIOMETERS Descriptors: CATHODE RAY TUBES; INFRARED RADIATION; MECHANICAL PROPERTIES; PHOTOGRAPHY; POWER TRANSMISSION LINES; VISIBLE SPECTRA Broader Terms: ELECTROMAGNETIC RADIATION; ELECTRON TUBES; EXPLOSIONS; MEASURING INSTRUMENTS; NUCLEAR EXPLOSIONS; RADIATION DETECTORS; RADIATIONS; SPECTRA; WEAPONS IOE38Ob