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In astrophysics and quantum physics a jiffy is, as defined by Edward R. Harrison, [13] the time it takes for light to travel one fermi, which is approximately the size of a nucleon. One fermi is 10 −15 m, so a jiffy is about 3 × 10 −24 s. It has also more informally been defined as "one light-foot", which is equal to approximately one ...
The Jiffy is the amount of time light takes to travel one femtometre (about the diameter of a nucleon). The Planck time is the time that light takes to travel one Planck length. The TU (for time unit) is a unit of time defined as 1024 μs for use in engineering. The svedberg is a time unit used for sedimentation rates (usually of proteins).
In classical, non-relativistic physics, it is a scalar quantity (often denoted by the symbol ) and, like length, mass, and charge, is usually described as a fundamental quantity. Time can be combined mathematically with other physical quantities to derive other concepts such as motion , kinetic energy and time-dependent fields .
In the Zork series of games, the Great Underground Empire has its own system of measurements, the most frequently referenced of which is the bloit. Defined as the distance the king's favorite pet can run in one hour (spoofing a popular legend about the history of the foot), the length of the bloit varies dramatically, but the one canonical conversion to real-world units puts it at ...
David Jeffrey Griffiths (born December 5, 1942) is an American physicist and educator. He was on the faculty of Reed College from 1978 through 2009, becoming the Howard Vollum Professor of Science before his retirement.
This is a list of noteworthy publications in physics, organized by type. General audience. List of books on popular physics concepts; Textbooks List of textbooks on ...
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Physics of the impossible : a scientific exploration into the world of phasers, force fields, teleportation, and time travel (1st Anchor Books ed.). New York: Anchor Books. ISBN 978-0307278821. — (2012). Physics of the future : how science will shape human destiny and our daily lives by the year 2100 (1st Anchor Books ed.). New York: Anchor ...