Greek Letter Tau (Ταυ - Τ)

Tau

Greek and Latin "T", is taken from the Semitic languages which used a cross. Interestingly, some of the early Christian writers thought this letter has a special correlation with the Cross.

"Τ" Letter in mathematics and in science

τ represents:

  • an interval of time
  • a mean lifetime
  • torque, the rotational force in mechanics.
  • the elementary tau lepton particle in particle physics.
  • the lifetime of a spontaneous emission process.
  • the time constant of any device, such as an RC circuit.
  • proper time in relativity.
  • a coefficient of correlation - see Kendall's tau.
  • the Golden ratio 1.618... (although φ (phi) is more common)
  • Ramanujan's tau function in number theory.
  • tau in astronomy is a measure of opacity, or how much sunlight cannot penetrate the atmosphere.
  • tau in biochemistry is a protein associated to microtubules.
  • shear stress in continuum mechanics.
  • the number of divisors of highly composite numbers
  • the prefix of many stars, via the Bayer stellar designation system.

Greek words with "τ"

ταύρος, τραπέζι

See Also:

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