The symbols Δt and ΔT (spoken as "delta T") are commonly used in a variety of contexts. ΔT (timekeeping) the difference between two time scales, Universal...

In precise timekeeping, ΔT (Delta T, delta-T, deltaT, or DT) is a measure of the cumulative effect of the departure of the Earth's rotation period from...

Stephenson: ΔT in seconds = −20 + 32t2 where t is measured in Julian centuries from 1820. The extrapolation is provided only to show ΔT is not negligible...

Celsius, the formula is {ΔT}°F = ⁠9/5⁠{ΔT}°C. To convert a delta temperature from degrees Celsius to kelvin, it is 1:1 ({ΔT}°C = {ΔT}K). Outline of metrology...

M + λp arranges here to set Δt to the zero nearest value which is the desired one. The difference between the MICA and Δt results was checked every 5 years...

is lower than that of the pure solvent, and the freezing-point depression (ΔT) is directly proportional to the amount concentration for dilute solutions...

elapsed time Δt of the inertial (stay-at-home) observer K for whom observer K' has velocity v(t) at time t. To calculate the elapsed time Δt of the inertial...

susceptibility given by χ(Δt). The upper limit of this integral can be extended to infinity as well if one defines χ(Δt) = 0 for Δt < 0. An instantaneous...

retaining the simple constant ambient example, by substituting the variable ΔT ≡ (T − Ta), one finds: d Δ T d t + 1 τ Δ T = 0. {\displaystyle {\frac {d\Delta...

and A2. In the time interval Δt fluid elements initially at the inflow cross-section A1 move over a distance s1 = v1 Δt, while at the outflow cross-section...

areal speed) is this region's area divided by the time interval Δt in the limit that Δt becomes vanishingly small. The vector direction is postulated to...

over a period of time. By knowing the volume ΔV of water measured in a time Δt, over a specimen of length L and cross-sectional area A, as well as the head...

reached, the heating is stopped. The amount of energy added equals CV ΔT, with ΔT representing the change in temperature. The piston is now freed and moves...

thermodynamic process in which the temperature T of a system remains constant: ΔT = 0. This typically occurs when a system is in contact with an outside thermal...

_{1}}{\Delta t}},} so the impulse J delivered by a steady force F acting for time Δt is: J = F Δ t . {\displaystyle \mathbf {J} =\mathbf {F} \Delta t.} The impulse...

absolute temperature cutoff, which Duracell suggests at 60 °C. With both the ΔT and the ΔV charging methods, both manufacturers recommend a further period...

as a rate, f = N/Δt, involving the number of entities counted or the number of events happened (N) during a given time duration (Δt);[citation needed]...

ft, and higher ceilings caused higher energy waste, even at the same ΔT. Since ΔT tends to be higher in taller ceilings, the effect of stratification is...

If ΔW is the amount of work performed during a period of time of duration Δt, the average power Pavg over that period is given by the formula P a v g =...

ΔT is the difference between T and T0. For strongly temperature-dependent α, this approximation is only useful for small temperature differences ΔT....

insulated. Then the heat ΔQ propagating through the bar in a time interval of Δt is given by ( Δ Q Δ t ) b a r = − k A Δ T b a r L {\displaystyle \left({\frac...

steady-state concentration ratio chot/ccold=exp(-ST ΔT) ≈ 1-ST ΔT under a temperature increase ΔT. The normalized fluorescence Fnorm=Fhot/Fcold measures...

I.; Zakharov, V. I.; Shifman, M. A. (1975). "A possible mechanism for the ΔT = 1/2 rule in nonleptonic decays of strange particles". Pisma Zh. Eksp. Teor...

shown on the right at time t (solid blue line) and at a short time later t+Δt (dashed). The wave maintains its shape as it propagates, so that a point at...

mean: ΔT (timekeeping), the time difference between Universal Time and Terrestrial Time. Delta timing, a technique used in graphics programming. ΔT (disambiguation)...

3em]x_{n+1}&=x_{n}+f(t_{n},v_{n+1})\,\Delta t\end{aligned}}} where Δt is the time step and tn = t0 + nΔt is the time after n steps. The difference with the standard...

each of which would expand in time Δt from a point on W, and if the secondary wavefront expanding from point P in time Δt touches the surface W′ at point...

that velocity remains approximately constant over the small time interval ΔT between measurements, the position state is projected forward to predict its...

known as ΔT = TT − UT1. ΔT was measured at +67.6439 seconds (TT ahead of UT1) at 0 h UTC on 1 January 2015; and by retrospective calculation, ΔT was close...

\int _{A}^{B}\,dz}}} In both integrals, make a change of variables from z to ΔT: Q = U A r ∫ Δ T ( A ) Δ T ( B ) Δ T d z d Δ T d ( Δ T ) ∫ Δ T ( A ) Δ T (...