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15 hours ago · The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...
15 hours ago · The neutron is a subatomic particle, symbol. n. or. n0. , which has no electric charge, and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, they are both referred to as nucleons.
15 hours ago · Pennsylvania (/ ˌpɛnsɪlˈveɪniə / ⓘ PEN-sil-VAY-nee-ə, lit. 'Penn's forest country'), officially the Commonwealth of Pennsylvania[b] (Pennsylvania Dutch: Pennsilfaani), [7] is a U.S. state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.
