conduct measurements
101Charles Sanders Peirce —  B …
102Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …
103Mariner 4 — Operator NASA Mission type Flyby Flyby of Mars …
104Psychology — (from Greek gr. ψῡχή, psȳkhē , breath, life, soul ; and gr. λογία, logia ) is an academic and applied discipline involving the scientific study of mental processes and behavior. Psychologists study such phenomena as perception, cognition, emotion …
105International System of Units — SI redirects here. For other uses, see Si (disambiguation). Cover of brochure The International System of Units The International System of Units[1] (abbreviated SI from French: Système international d unités[2]) is the modern …
106Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …
107Hubble Space Telescope — Infobox Space telescope name = Hubble Space Telescope (HST) caption = The Hubble Space Telescope as seen from Space Shuttle Discovery during its second servicing mission (STS 82) organization = NASAESASTScI alt names = nssdc id =… …
108Aerobot — An aerobot is an aerial robot, usually used in the context of an unmanned space probeWhile work has been done since the 1960s on robot rovers to explore the Moon and other worlds in the Solar system, such machines have limitations. They tend to… …
109Poverty — Street children sleeping in Mulberry Street – Jacob Riis photo New York, United States (1890) Poverty is the state of one who lacks a certain amount of material possessions or money.[1] Absolute poverty or destitution is inability to afford …
110Cosmic Background Explorer — (COBE) General information NSSDC ID 1989 089A Organization NASA …
