general-purpose satellite
31Military equipment of Israel — The military equipment of Israel includes a wide array of arms, tanks, planes, cannons, armored vehicles. Many of these are purchased overseas. Up until the Six Day War of 1967, the Israel Defense Forces principal supplier was France, since then …
32List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …
33Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …
34cryptology — cryptologist, n. cryptologic /krip tl oj ik/, cryptological, adj. /krip tol euh jee/, n. 1. cryptography. 2. the science and study of cryptanalysis and cryptography. [1635 45; < NL cryptologia. See CRYPTO , LOGY] * * * Introduction …
35flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
36Education in the People's Republic of China — This article is about education in the People s Republic of China. See Education in Hong Kong and Education in Macau for education in Hong Kong and Macau, respectively. For education in the Republic of China (Taiwan), see Education in the… …
37History of virtual learning environments 1990s — In the history of virtual learning environments, the 1990s was a time of growth, primarily due to advent of the affordable computer and of the Internet.1990s1990* Formal Systems Inc. of Princeton, NJ, USA introduces a DOS based Assessment… …
38Radar MASINT — is one of the subdisciplines of Measurement and Signature Intelligence (MASINT) and refers to intelligence gathering activities that bring together disparate elements that do not fit within the definitions of Signals Intelligence (SIGINT),… …
39photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
40Australian Defence Force — Australian Defence Force …
