vis+viva
121Mass ratio — Astrodynamics Orbital mechanics Equations …
122Naturphilosophie — For the historic branch of metaphysics, see Natural philosophy. Naturphilosophie (philosophy of nature in German) is a term used in English language philosophy to identify a current in the philosophical tradition of German idealism, as applied to …
123An Experimental Enquiry Concerning the Source of the Heat which is Excited by Friction — BackgroundRumford was an opponent of the caloric theory of heat which held that heat was a fluid that could be neither created nor destroyed. He had further developed the view that all gases and liquids were absolute non conductors of heat. His… …
124Indicator diagram — of engines.The diagram is simply a chart of the pressure of steam in a cylinder against the steam s volume. In 1796, Southern developed the simple, but critical, technique to generate the diagram by fixing a board so as to move with the piston,… …
125Conjugate variables (thermodynamics) — For a more general mathematical discussion, see Conjugate variables. Thermodynamics …
126Thermodynamic cycle — Thermodynamics …
127Bi-elliptic transfer — In astronautics and aerospace engineering, the bi elliptic transfer is an orbital maneuver that moves a spacecraft from one orbit to another and may, in certain situations, require less delta v than a Hohmann transfer.The bi elliptic transfer… …
128Material properties (thermodynamics) — Thermodynamics …
