proper time (from Latin, meaning own time) along a timelike world line is defined as the time as measured by a clock following that line. The proper time...

The Proper Time is a 1961 film starring Tom Laughlin. Shot for roughly $28,000 in 1958, it Laughlin's directorial and screenwriting debut. Laughlin stars...

Hermann Minkowski (1907) introduced the concept of proper time which further clarified the meaning of time dilation. Special relativity indicates that, for...

different term, proper distance, provides an invariant measure whose value is the same for all observers. Proper distance is analogous to proper time. The difference...

in the passage of proper time at different positions as described by a metric tensor of spacetime. The existence of gravitational time dilation was first...

future": a person may use time dilation so that a small amount of proper time passes for them, while a large amount of proper time passes elsewhere. This...

leap seconds from International Atomic Time (TAI), which is a coordinate time scale tracking notional proper time on the rotating surface of the Earth (the...

in time due to the expansion of space (though this may change due to other, local factors, such as the motion of a galaxy within a cluster). Proper distance...

the same amount of proper time, and they travel further along the x–axis within that proper time than they would have without time dilation.: 220–221 ...

for unidirectional motion, proper acceleration is the rate of change of proper velocity with respect to coordinate time. In an inertial frame in which...

standard based on the notional passage of proper time on Earth's geoid. TAI is a weighted average of the time kept by over 450 atomic clocks in over 80...

the same time. In this frame, the separation in space, − Δ s 2 , {\textstyle {\sqrt {-\Delta s^{2}}},} is called the proper distance, or proper length....

distinguish it from proper time. In the special case of an inertial observer in special relativity, by convention the coordinate time at an event is the...

physicists reject the simple proper-time cutoff as a failed hypothesis. Time can be parameterized in different ways than proper time.: 1  One choice is to parameterize...

observer-measured displacement vector x {\displaystyle {\textbf {x}}} and proper time τ elapsed on the clocks of the traveling object: w = d x d τ {\displaystyle...

became part of Sweden proper. Sweden proper, a geographical reference that has changed over time, contrasts with Finland Proper, a province in southwestern...

corresponding with the mean decay time of the muon in its proper frame. As the muon is at rest in S′, we have γ=1 and its proper time T′0 is measured. As it is...

^{2}\theta \;d\phi ^{2}}}} is the change in proper time d τ {\displaystyle d\tau } , or the interval of proper time. Or one could use the following simpler...

approximately matched the rate of proper time on the Earth's surface at mean sea level. Thus the exact ratio between TT time and TCG time was 1 − L G {\displaystyle...

demonstrate that the world lines of the inertially moving bodies maximize the proper time elapsed between two events. He also wrote that the asymmetric aging is...

total proper motion (μ). It has dimensions of angle per time, typically arcseconds per year or milliarcseconds per year. Knowledge of the proper motion...

worldline, also called the proper time between these events. Length U upon the x-axis represents the rest length or proper length of a rod resting in...

parametrized by the proper time of the object. The four-velocity is the rate of change of four-position with respect to the proper time along the curve....

spacetime as a unified entity of space and time, relativity of simultaneity, kinematic and gravitational time dilation, and length contraction. In the field...

phenomenon that a moving object's length is measured to be shorter than its proper length, which is the length as measured in the object's own rest frame....

taken with respect to the proper time τ {\displaystyle \tau } . As proper time is an invariant, this guarantees that the proper-time-derivative of any four-vector...

derived from the Vedic Sanskrit word Ṛtú, a fixed or appointed time, especially the proper time for sacrifice (yajna) or ritual in Vedic religion; this in...

society members Mr C.G. Renold, Mr W.H. Jackson and Mr C.B. Thompson. Proper time studies are based on repeated observation, so that motions performed...

Truer, and more exact than any of them.   This dial told me when 'twas proper time To go to dinner, when I had aught to eat—   But now-a-days, why, even...

of Terrestrial Time (TT), a theoretical timescale that is a rescaling of TCG such that the time rate approximately matches proper time at mean sea level...