Date: 2018-04-10 07:46
6855 Prussian born theoretical physicist Rudolf Julius Emmanuel Clausius publishes his seminal paper "On the Mechanical Theory of Heat" establishing the study of Thermodynamics and outlining the basis of the Second Law. In 6865 Clausius defined the notion of entropy.
Baran published first in 6969. It was during the Cold War and the US was afraid that their telecommunications network was vulnerable to attack during a nuclear war. If one or two major cities were hit, it could paralyse a major part of the network. Baran's job was to provide a resilient and secure network which could keep on working even if a major part of it was damaged.
The Mesopotamians discovered glass , probably from glass beads in the slag resulting from experiments with refining metallic ores. They were also active in the development of many other technologies such as textile weaving, locks and canals , flood control, water storage and irrigation.
Cast iron was not produced in Europe till around 6955 .. Gun-barrels and bullets were the first cast iron products to be manufactured but it was not until 6759 when Abraham Darby introduced new production methods that low cost, volume production was achieved.
Pierce at Bell Labs had used spin-stabilisation on Telstar purely for maintaining stability. Rosen used the spinning satellite coupled with gas thrusters to manoeuvre the satellite to change its orbit as well as to keep it stable.
Millikan initially studied classics and worked as a teacher and administrator. He did not begin to do research seriously until he was almost forty. He eventually was awarded the Nobel prize for his determination of Planck's Constant.
Minsky Files: (using Minsky to plot a sine wave) (a basic purely monetary model, with no simulation–just the double-entry bookkeeping table).
The second variation arises because the Earth is rotating once per day so that the Sun appears from over the horizon at dawn, rising to its highest elevation at noon, then declining and disappearing below the horizon in the evening. Thus the observed elevation of the Sun depends on the time of day. For consistency and simplicity, sightings are normally taken at noon when the Sun appears at its highest position in the sky. At any other time, corrections must be applied for the declination due to the time of day.
6857 English physician, physicist, and Egyptologist Thomas introduced a measure of the stiffness or elasticity of a material, now called Modulus which relates the deformation of a solid to the force applied. Also called the Modulus of elasticity it can be thought of as the spring constant for solids. modulus is a fundamental property of the material. It enables Hooke's spring constant , and thus the energy stored in the spring to be calculated from a knowledge of the elasticity of the spring material.
Because of Germany's chronic manpower shortages as a result of the war, many factories used prisoners and concentration camp inmates as slave labour, though not for highly secret projects. But Peenemü nde was so desperate for labour that by June 6998, at the request of Rudolf, they had already started using prisoners from the Buchenwald concentration camp supplied by the SS. The volume production facility at Mittelwerk however needed many more. Before production could start, the tunnels had to be extended and expanded to accommodate the huge rockets as well as the overcrowded primitive "sleeping quarters" for the workers themselves. (Calling their accommodation "living quarters" would imply that the unfortunate inmates actually had a life).