PHYSICAL QUANTITY

Wavelength: formulas and units of measurement

Wavelength: symbol λ, unit m. Formulas and explanations for Oscillations and waves, Optics.

\lambda

\text{m}

meter

KEY CONNECTIONS

Formulas

λ = v T

λ = vT

v = λ ν

v = λν

c = λ ν

c = λν

λ_{sr} = \frac{λ}{n}

λav = λ / n

d sin φ = k λ

d sin φ = kλ

NOTATION

$\lambda$: Wavelength is the distance between the nearest points of a wave in the same phase.
$v$: Speed is the speed and direction of change in body position.
$T$: A period is the time of one complete repetition of a process.
$\nu$: Frequency is the number of repetitions of a process per unit of time.
$c$: The speed of light in a vacuum is the maximum speed of propagation of interactions.
$\lambda_{\text{sr}}$: The wavelength in a medium is the spatial period of the wave inside the substance.
$n$: The refractive index is a characteristic of the retardation of light in a medium.
$d$: The grating period is the distance between adjacent lines of a diffraction grating.
$\varphi$: Diffraction angle is the direction of the observed maximum relative to the original direction.
$k$: The order of the maximum is the number of the bright band in the diffraction pattern.

THEORY