selected area diffraction
61History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
62Glossary of military abbreviations — List of terms, acronyms, information, related to modern armour, artillery, infantry, weapons, and related military subject matter.* AA anti aircraft * AAA anti aircraft artillery Triple A * AAAV Advanced Amphibious Assault Vehicle * AAD Armoured… …
63Condon Committee — Mass market paperback edition of the Condon Report, published by New York Times/Bantam Books (January, 1969), 965 pages. The Condon Committee was the informal name of the University of Colorado UFO Project, a group funded by the United States Air …
64Abdul Qadeer Khan — HI, NI (twice) Abdul Qadeer Khan, 1999. Born 1 April …
65Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …
66biology — /buy ol euh jee/, n. 1. the science of life or living matter in all its forms and phenomena, esp. with reference to origin, growth, reproduction, structure, and behavior. 2. the living organisms of a region: the biology of Pennsylvania. 3. the… …
67Nanjing University — 南京大學 …
68Speckle imaging — (also known as video astronomy ) describes a range of high resolution astronomical imaging techniques based either on the shift and add ( image stacking ) method or on speckle interferometry methods. These techniques can dramatically increase the …
69ExoMars — Operator ESA, NASA Major contractors Thales Alenia Space and Astrium Mission type Orbiter, lander and rover Orbital insertion date 2017 and 2019 Launch date …
70Polymer banknote — Polymer banknotes were developed by the Reserve Bank of Australia (RBA), Commonwealth Scientific and Industrial Research Organisation (CSIRO) and The University of Melbourne and were first issued as currency in Australia in 1988. These banknotes… …
