ΔT
In precise timekeeping, ΔT (Delta T, delta-T, deltaT, or DT) is the time difference obtained by subtracting Universal Time (UT) from Terrestrial Time (TT): ΔT = TT − UT. The Earth's rotational speed is ν = 1/2π dθ/dt, and a day corresponds to one period T = 1/ν. A rotational acceleration dν/dt gives a rate of change of the period of dT/dt = −1/ν2 dν/dt, which is usually expressed as α = ν dT/dt = −1/ν dν/dt. This has units of 1/time, and is commonly quoted as milliseconds per day per century (ms/day/cy).
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ΔT
In precise timekeeping, ΔT (Delta T, delta-T, deltaT, or DT) is the time difference obtained by subtracting Universal Time (UT) from Terrestrial Time (TT): ΔT = TT − UT. The Earth's rotational speed is ν = 1/2π dθ/dt, and a day corresponds to one period T = 1/ν. A rotational acceleration dν/dt gives a rate of change of the period of dT/dt = −1/ν2 dν/dt, which is usually expressed as α = ν dT/dt = −1/ν dν/dt. This has units of 1/time, and is commonly quoted as milliseconds per day per century (ms/day/cy).
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Als Delta T () wird in der Ast ...... ur Prognose zukünftiger Werte.
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Delta T, ΔT, o DT es la difere ...... erence Systems Service (IERS).
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In precise timekeeping, ΔT (De ...... erence Systems Service (IERS).
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Дельта T, ΔT, Delta T, delta-T ...... TT) и всемирным временем (UT).
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Als Delta T () wird in der Ast ...... nn des 21. Jahrhunderts betrug
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Delta T, ΔT, o DT es la difere ...... restres que se encontraban deb
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In precise timekeeping, ΔT (De ...... r day per century (ms/day/cy).
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Дельта T, ΔT, Delta T, delta-T ...... TT) и всемирным временем (UT).
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Delta T
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Delta T
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ΔT
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Дельта T
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