History of variational principles in physics involves integrals over an interval of time and (for fields) extended region of space. Moreover, in the usual formulation of classical action principles, the initial and final states of the system are fixed, e.g., In particular, the fixing of the "final" state appears to give the action principle a teleological character which has been controversial historically. This apparent teleology is eliminated in the quantum mechanical version of the action principle. History of variational principles in physics A variational principle in physics is an alternative method for determining the state or dynamics of a physical system, by identifying it as an
The Physical Impossibility of Death in the Mind of Someone Living The Physical Impossibility of Death in the Mind of Someone Living The Physical Impossibility of Death in the Mind of Someone Living is an artwork created in 1991 by Damien Hirst, an English artist and a leading member of the "Young British Artists" (or YBA). It consists of a tiger shark preserved in formaldehyde in a vitrine. It was originally commissioned in 1991 by Charles Saatchi, who sold it in 2004, to Steven A. Cohen for an undisclosed amount, widely reported to have been at least $8 million. However, the title of Don Thompson's book, "The $12 Million Stuffed Shark: