to gain velocity
21human development — ▪ biology Introduction the process of growth and change that takes place between birth and maturity. Human growth is far from being a simple and uniform process of becoming taller or larger. As a child (child development) gets bigger,… …
22oxidation–reduction reaction — ▪ chemical reaction Introduction also called redox reaction any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …
23electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
24Gravity assist — In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist or swing by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in… …
25MESSENGER — This article is about the NASA space mission. For other uses, see Messenger. MESSENGER Artist s rendering of MESSENGER orbiting Mercury. Operator NASA / APL Major contractors APL …
26Classical and quantum conductivity — Classical and quantum mechanical views of conductivity have both described the movements of electrons in a metallic solid. The free electron gas that is present in metallic solids is the reason for an important property of all metals:… …
27Mars Polar Lander — Artist depiction of Mars Polar Lander on Mars. Operator NASA / JPL Major contractors Martin Marietta …
28Mason's rule — Mason s gain formula (MGF) is a method for finding the transfer function of a linear signal flow graph (SFG). The formula was derived by Samuel Jefferson Mason[1] and is named after its discoverer. MGF is an alternate method to finding the… …
29Cassini–Huygens — Artist s concept of Cassini s Saturn Orbit Insertion Operator NASA / ESA / ASI Mission type …
30Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
