Another energy-related concept is called the Lagrangian, after Joseph-Louis Lagrange. This formalism is as fundamental as the Hamiltonian, and both can be used to derive the equations of motion or be derived from them. It was invented in the context of classical mechanics, but is generally useful in modern physics. The Lagrangian is defined as the kinetic energy minus the potential energy. Usually, the Lagrange formalism is mathematically more convenient than the Hamiltonian for non-conservative systems (such as systems with friction).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Is the Lagrange formalism or the Hamiltonian more convenient for non-conservative systems?
Ah, so.. Lagrange formalism

The American studies program reflected the worldwide anti-Communist ideological struggle. Norman Holmes Pearson, who worked for the Office of Strategic Studies in London during World War II, returned to Yale and headed the new American studies program, in which scholarship quickly became an instrument of promoting liberty. Popular among undergraduates, the program sought to instruct them in the fundamentals of American civilization and thereby instill a sense of nationalism and national purpose. Also during the 1940s and 1950s, Wyoming millionaire William Robertson Coe made large contributions to the American studies programs at Yale University and at the University of Wyoming. Coe was concerned to celebrate the 'values' of the Western United States in order to meet the "threat of communism."
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who was the last professor for the American studies program?
Ah, so.. unanswerable

Meanwhile, Le Verrier by letter urged Berlin Observatory astronomer Johann Gottfried Galle to search with the observatory's refractor. Heinrich d'Arrest, a student at the observatory, suggested to Galle that they could compare a recently drawn chart of the sky in the region of Le Verrier's predicted location with the current sky to seek the displacement characteristic of a planet, as opposed to a fixed star. On the evening of 23 September 1846, the day Galle received the letter, he discovered Neptune within 1 of where Le Verrier had predicted it to be, about 12 from Adams' prediction. Challis later realised that he had observed the planet twice, on 4 and 12 August, but did not recognise it as a planet because he lacked an up-to-date star map and was distracted by his concurrent work on comet observations.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was Challis looking for when he saw Neptune the first two times?
Ah, so..
comet observations