period of negative acceleration
1Acceleration — Accelerate redirects here. For other uses, see Accelerate (disambiguation). Classical mechanics Newton s Second Law …
2Accélération séculaire — Effet Shklovski En astronomie, l effet Shklovski est le nom donné à la variation de la période apparente d un pulsar du simple fait de son déplacement dans l espace, à l image d un effet Doppler Fizeau qui voit la fréquence du son émis par une… …
3Plasma acceleration — is a technique for accelerating charged particles, such as electrons, positrons and ions, using an electric field associated with an electron plasma wave. The wave is created by the passage of a very brief laser or electron pulse through the… …
4Dark energy — Not to be confused with dark matter, dark fluid, or dark flow. Physical cosmology …
5Car handling — and vehicle handling is a description of the way wheeled vehicles perform transverse to their direction of motion, particularly during cornering and swerving. It also includes their stability when moving in a straight line. Handling and braking… …
6India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
7Economic history of Brazil — The economic history of Brazil covers various economic events and traces the changes in the Brazilian economy over the course of the history of Brazil. Portugal, which first colonized the area in the 16th century, enforced a colonial pact with… …
8Desmodromic valve — In general mechanical terms, the word desmodromic is used to refer to mechanisms that have different controls for their actuation in different directions. Desmodromic poppet valve in Ducati engine. A desmodromic valve is a reciprocating engine… …
9Learning curve — The term learning curve refers to the graphical relation between the amount of learning and the time it takes to learn. Initially introduced in educational and behavioral psychology, the term has acquired a broader interpretation over time, and… …
10ret´ro|grade´ly — ret|ro|grade «REHT ruh grayd», adjective, verb, grad|ed, grad|ing. –adj. 1. moving backward; retreating. 2. becoming worse; declining; deteriorating. 3. inverse or reversed: » …
