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Pennsylvania Germans are inaccurately known as Pennsylvania Dutch from a misunderstanding of "Pennsylvania Deutsch", the group's German language name. The first group of Germans to settle in Pennsylvania arrived in Philadelphia in 1683 from Krefeld, Germany, and included Mennonites and possibly some Dutch Quakers.
William Penn (24 October [O.S. 14 October] 1644 – 10 August [O.S. 30 July] 1718) was an English writer, religious thinker, and influential Quaker who founded the Province of Pennsylvania during the British colonial era.
[2] [3]: 19–21 [4] [5] The basic premise had already been demonstrated by Italian experimenters a few decades earlier. According to the story, Galileo discovered through this experiment that the objects fell with the same acceleration, proving his prediction true, while at the same time disproving Aristotle 's theory of gravity (which states ...
[6] 76% of predictions achieved better than 3 Å, and 46% had a C-alpha atom RMS accuracy better than 2 Å, [6] with a median RMS deviation in its predictions of 2.1 Å for a set of overlapped CA atoms. [6] AlphaFold 2 also achieved an accuracy in modelling surface side chains described as "really really extraordinary". To additionally verify ...
Jamestown, also Jamestowne, was the first settlement of the Virginia Colony, founded in 1607, and served as the capital of Virginia until 1699, when the seat of government was moved to Williamsburg. This article covers the history of the fort and town at Jamestown proper, as well as colony-wide trends resulting from and affecting the town ...
Classical mechanics is a model of the physics of forces acting upon bodies; includes sub-fields to describe the behaviors of solids, gases, and fluids.It is often referred to as "Newtonian mechanics" after Isaac Newton and his laws of motion.
Millikan in 1891. Robert Andrews Millikan was born on March 22, 1868, in Morrison, Illinois. [6] He went to high school in Maquoketa, Iowa and received a bachelor's degree in the classics from Oberlin College in 1891 and his doctorate in physics from Columbia University in 1895 [10] – he was the first to earn a Ph.D. from that department.
The Pennsylvania Railroad's class Q2 comprised one prototype and twenty-five production duplex steam locomotives of 4-4-6-4 wheel arrangement built between 1944 and 1945. [ 1 ] [ 3 ] [ 4 ] [ 2 ] They were the largest non- articulated locomotives ever built and the most powerful locomotives ever static tested, producing 7,987 cylinder horsepower ...