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every day / daily quaque die q.h.s., qhs every night at bedtime quaque hora somni q.d.s, qds, QDS 4 times a day quater die sumendum q.i.d, qid 4 times a day quater in die q.h., qh every hour, hourly quaque hora q.o.d., qod every other day / alternate days quaque altera die q.p.m., qPM, qpm every afternoon or evening: quaque post meridiem q.s., qs
3 times a day t.i.d., t.d. ter in die: 3 times a day AMA style avoids use of this abbreviation (spell out "3 times a day") tinct. tinctura: tincture t.i.w. 3 times a week mistaken for "twice a week" top. topical TPN total parenteral nutrition tr, tinc., tinct. tinctura: tincture trit. triturate: grind to a powder troch. trochiscus: lozenge tsp
four times each day (from Latin quater die sumendus) q.h. each hour (from Latin quaque hora) q.h.s. every bedtime (from Latin quaque hora somni) q.i.d. four times each day (from Latin quater in die) (not deprecated, but consider using "four times a day" instead. See the do-not-use list) QIDS: Quick Inventory of Depressive Symptoms: q.l.
Einstein showed how the velocity of light in a moving medium is calculated, in the velocity-addition formula of special relativity. Einstein's theory of general relativity provides the solution to the other light-dragging effects, whereby the velocity of light is modified by the motion or the rotation of nearby masses.
The results of various experiments, including the Michelson–Morley experiment in 1887 (subsequently verified with more accurate and innovative experiments), led to the theory of special relativity, by showing that the aether did not exist. [20] Einstein's solution was to discard the notion of an aether and the absolute state of rest.
In addition Einstein recognized that the stationary aether concept has no place in special relativity, and that the Lorentz transformation concerns the nature of space and time. Together with the moving magnet and conductor problem , the negative aether drift experiments , and the aberration of light , the Fizeau experiment was one of the key ...
As historians such as John Stachel argue, Einstein's views on the "new aether" are not in conflict with his abandonment of the aether in 1905. As Einstein himself pointed out, no "substance" and no state of motion can be attributed to that new aether. [10] Einstein's use of the word "aether" found little support in the scientific community, and ...
The Gödel metric, also known as the Gödel solution or Gödel universe, is an exact solution, found in 1949 by Kurt Gödel, [1] of the Einstein field equations in which the stress–energy tensor contains two terms: the first representing the matter density of a homogeneous distribution of swirling dust particles (see dust solution), and the second associated with a negative cosmological ...