FREQUENCY AND PERIOD

Crest:  Positive pulse

Though:  Negative pulse

λ :  Wavelength (m)

A:  Amplitude (m)

T:  Period (s)

f:  frequency (1/s, Hz)

T =

f =

f =

Universal wave equation:  v = f . λ

c:  Speed of light in vacuum (3x10⁸ m/s)

PENDULUM:

T:  Period (s) l:  Length of the pendulum (m) g:  Gravitational acceleration (m/s2)