ν (EN)

letter, symbol

letter “ν”

1. the 13th letter of the Greek alphabet
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   She studied ancient Greek and learned that ν is pronounced "nu".

symbol “ν”

1. (physics) a symbol representing frequency
   In physics class, we learned that ν represents the frequency of a wave.
2. (physics) a symbol representing a neutrino, an elementary particle
   The scientist detected a neutrino (ν) emitted from the sun.
3. (fluid dynamics) a symbol for kinematic viscosity, a measure of fluid's resistance to flow
   Engineers calculate the flow rate using ν to represent kinematic viscosity.
4. (mathematics) a variable used to represent degrees of freedom or other parameters
   The t-distribution depends on ν, the degrees of freedom.