PHYSICAL QUANTITY

Wavelength: formulas and units of measurement

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

\lambdaλ\text{м}meter

KEY CONNECTIONS

Formulas

\lambda=vTλ = vT

v=\lambda\nuv = λν

c=\lambda\nuc = λν

\lambda_{\text{ср}}=\frac{\lambda}{n}λср = λ / n

d\sin\varphi=k\lambdad sin φ = kλ

NOTATION

\lambda: Wavelength is the distance between the nearest points of a wave in the same phase.
v: Velocity is the rate and direction of change of a body's 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{ср}}: 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

PRACTICE