Ministry of Supply

About: Ministry of Supply is a based out in . It is known for research contribution in the topics: Polarography & Bacillus (shape). The organization has 416 authors who have published 355 publications receiving 8951 citations. The organization is also known as: MoS.

The Use of Oxygen Apparatus by Acclimatized Men

Abstract: Although oxygen breathing apparatus has a wide range of applications it is only in Himalayan mountaineering that the users are likely to be fully acclimatized to high altitude. Above 25000 ft. even acclimatized men are severely handicapped without additional oxygen and hence we have little accurate information on phenomena occurring at these heights. The following notes describe observations made during the British Expedition to Cho Oyu of 1952 and the Everest Expedition of 1953, when oxygen apparatus was used to a greater extent than in previous mountaineering. The conditions met in mountaineering at great altitudes are not easy, and a breathing set must meet several stringent requirements. Thus the greatest weight which a climber can carry over difficult ground for many hours is about 60 lb., but a load as great as this is a severe handicap and weight and bulk should both be small.

Aids to training-the design of radar synthetic training devices for the R.A.F.

Abstract: During the war radar synthetic training devices were used to a great extent by the Royal Air Force for training operators, navigators, controllers, etc., in radar techniques. As each new radar device was introduced (CHL, GCI, AI, Gee, H2S, Oboe, etc.) a simple synthetic trainer was designed concurrently with the design of the radar equipment. As operational experience was gained on the equipment a more complex crew trainer was designed. This type of trainer provided accurate presentation of a moving synthetic target or targets and complete operational ?practice?, with a record of the trainee's errors. Approximately 70 different types of trainers were developed for the various ?marks? of radar systems, varying in scope from the provision of simple synthetic echoes to a complex device such as the reproduction on the ground of a complete A.I. night-fighter interception. A brief description is given of the major types of trainers. The fundamental principles necessary for the control of synthetic targets in two and three dimensions are discussed. With the end of the war the urgent necessity for training devices declined and comparatively few trainers are being designed at the present time.

Oversea Propagation on Wavelengths of 3 and 9 Centimeters

Abstract: This paper summarizes the results obtained from tests extending from 1943 to 1946 which were made to determine the meteorological factors controlling the propagation of centimeter waves. Oversea paths of 60 and 200 miles off the West Coast of Great Britain were used for the experiments. Continuous records of radio field strengths and frequent measurements of the meteorological conditions along the paths were made. The correlation between the radio results and the various meteorological parameters is studied in the light of current theories of microwave propagation.

The design of electron synchrotrons

Abstract: The principles underlying the design of the 30-MeV synchrotron are described in relation to general design principles for machines up to 400 MeV. The mechanism of operation of electron synchrotrons is described, and formulae are derived for specifying design parameters. Some practical points in the design of synchrotron magnets, accelerating chambers and electronic equipment are then considered. Finally, theradiation characteristics of the machines are described. The paper isillustrated by experiments on the 30-MeV A.E.R.E. synchrotron, and by design data on the 375-MeV Glasgow synchrotron.