Abstract: A radiation dosimeter for preparing a dosage map of a specific rotary canister of a blood radiating machine. This dosimeter includes a sandwich assembly of a first panel and a second panel and a gamma ray-sensitive film disposed therebetween, for mounting temporarily in the canister during gamma ray dosage and canister rotation.

Abstract: A radar absorber, for use as a sprayable paint, or for use as a plastic sheet, is provided. The radar absorber is used to cover a structural part of an aircraft or to shield a part of a naval vessel. The absorber, or coating in this embodiment, includes an inner layer having an elastomeric carrier material with a carbonyl iron powder dispersed therein, or disposed therein, of a regular particle size of about 4 to 5 micron, and includes an outer layer having an elastomeric carrier material with a carbonyl iron powder dispersed therein, or disposed therein, of a fine particle size of about 0.5 to 1.5 micron.