powered approach
71Edward L. Beach, Jr. — Infobox Military Person name= Edward Latimer Beach, Jr. born= birth date|1918|4|20 died= death date and age|2002|12|1|1918|4|20 placeofbirth= New York City, New York placeofdeath= Washington, D.C. placeofburial= United States Naval Academy… …
72arctic — arctically, adv. /ahrk tik/ or, esp. for 7, /ahr tik/, adj. 1. (often cap.) of, pertaining to, or located at or near the North Pole: the arctic region. 2. coming from the North Pole or the arctic region: an arctic wind. 3. characteristic of the… …
73Solar sail — Solar sails (also called light sails or photon sails, especially when they use light sources other than the Sun) are a proposed form of spacecraft propulsion using large membrane mirrors. Radiation pressure is about 10 5 Pa at Earth s distance… …
74Prosthesis — For other uses, see Prosthesis (disambiguation). Not to be confused with Orthotic. A man with two prosthetic arms playing table football …
75Tricycle — For other uses, see Tricycle (disambiguation). A tricycle (often abbreviated to trike) is a three wheeled vehicle. While tricycles are often associated with the small three wheeled vehicles used by pre school age children, they are also used by… …
76Hawker Siddeley Trident — HS121 Trident Trident 1 G ARPC at the SBAC Farnborough Airshow, 8 September 1962. Role …
77coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
78Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
79Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
80MythBusters (2007 season) — Country of origin Australia United States No. of episodes 25 (includes 4 specials) Broadcast Original channel Discovery Channel …
