Preparation (physics) experienced in quantum mechanics. Preparation (physics) Generally, measuring instruments are meant to get the (pre-)existent value of a physical quantity of a system with as little change of, or interaction with the system as possible. — If a measuring instrument fixes a physical quantity of a physical system for further use (post-existent), then the measurement process is called preparation. For example, a graduated cylinder filled to a definite mark prepares a certain volume of the liquid for further use. Though preparation measures a physical quantity — at least by fixing it — it often destroys previous states of the physical
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: