γ (EN)

letter, symbol

letter “γ”

1. the 3rd letter of the Greek alphabet
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   In the triangle, angle γ is opposite side c.

symbol “γ”

1. (physics) the symbol for gamma rays, which are high-energy electromagnetic radiation
   The lab measured the γ radiation emitted by the substance.
2. (physics) a symbol representing the Lorentz factor in relativity, accounting for time dilation at high speeds
   The equation E = γmc² includes γ to adjust for relativistic effects.
3. (mathematics) a symbol representing the Euler–Mascheroni constant, approximately 0.5772
   The constant γ appears in advanced calculus involving harmonic series.