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Why Can One Call The Time Component Of The Preceding 4-vector By The Name Energy?
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Why can one call the time component of the preceding 4-vector by the name
energy? For two reasons: First, because this time component has the correct
units -- the units of mass...
-- From Spacetime Physics by Taylor and Wheeler
Related:
vaxocentrism /vak`soh-sen'trizm/ n. [analogy with `ethnocentrism'] A notional disease said to afflict C programmers who persist in coding according to certain assumptions that are valid (esp.
under Unix) on VAXen but false elsewhere. Among these are...
Two men are in a hot-air balloon. Soon, they find themselves lost in a canyon somewhere.
One of the three men says, "I've got an idea. We can call for help in this canyon and the echo will carry our voices to the end of the canyon....
finger [WAITS, via BSD Unix] 1. n. A program that displays information about a particular user or all users logged on the system, or a remote system.
Typically shows full name, last login time, idle time, terminal line, and terminal location (where applicable)....
finger: [WAITS, via BSD UNIX] 1. n. A program that displays information about a particular user or all users logged on the system, or a remote system.
Typically shows full name, last login time, idle time, terminal line, and terminal location (where applicable)....
Time is what prevents everything from happening at once.
-- John Archibald Wheeler (1911- ) -- American J. of Physics, 1978, 46, 323...
The most expensive component is the one that breaks.
As the system comes up, the component builders will from time to time appear, bearing hot new versions of their pieces -- faster, smaller, more complete, or putatively less buggy.
The replacement of a working component by a new version requires the same systematic testing procedure that adding a new component does, although it should require less time, for more complete and efficient test cases will usually be available....
As the system comes up, the component builders will from time to time appear, bearing hot new versions of their pieces -- faster, smaller, more complete, or putatively less buggy.
The replacement of a working component by a new version requires the same systematic testing procedure that adding a new component does, although it should require less time, for more complete and efficient test cases will usually be available....
Westheimer's Time Estimation Rule: Estimate the time you think it should take, multiply by 2, and add 3, indpendent of the units of time.