proven concept
91Solar 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… …
92Relativism — Compare moral relativism, aesthetic relativism, social constructionism, cultural relativism, and cognitive relativism. Relativism is the idea that some elements or aspects of experience or culture are relative to, i.e., dependent on, other… …
93Computed tomography — tomos (slice) and graphein (to write).Computed tomography was originally known as the EMI scan as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial… …
94Space habitat — A pair of O Neill cylinders …
95Sufficiency (statistics) — In statistics, sufficiency is the property possessed by a statistic, with respect to a parameter, when no other statistic which can be calculated from the same sample provides any additional information as to the value of the parameter cite… …
96Repressed memory — is a hypothetical concept used to describe a significant memory, usually of a traumatic nature, that has become unavailable for recall; also called motivated forgetting in which a subject blocks out painful or traumatic times in one s life. This… …
97Open relationship — The Purple Mobius symbol for polyamory and non monogamy. An open relationship is an interpersonal relationship in which the parties want to be together but agree to a form of a non monogamous relationship.[1] This means that they agree that a… …
98Medicine in medieval Islam — In the history of medicine, Islamic medicine or Arabic medicine refers to medicine developed in the medieval Islamic civilization and written in Arabic, the lingua franca of the Islamic civilization. Despite these names, a significant number of… …
99Low-energy vehicle — A Low energy vehicle is any type of vehicle that uses less energy than a regular petroleum fuel vehicle. Higher efficiency can be achieved by changing the vehicle s design, and/or by modifying its powertrain. Energy consumption as low as 5 12.5… …
100List of independent discoveries — Independent discoveries in science, termed multiples by Robert K. Merton, are instances in which similar discoveries are made by scientists working independently of each other. [http://books.google.com/books?vid=ISBN0226520714 id=eprv7hMdO IC… …
