Classical mechanics


Wave

Propagating disturbance in some quantity over space

Transverse wave

Wave such that oscillation is orthogonal to the direction of propagation

Longitudinal wave

Wave such that oscillation is parallel to the direction of propagation

Sinusoidal wave

Transverse wave whose oscillation can be modelled by a sinusoidal function

\(f(t) = A \sin ( t)\)

Amplitude

Largest disturbance the wave produces

\(A = \sup_{t \in [t_0,t_1] } (f) \)

Period

Time required until the oscillation cycle repeats

Frequency

Quantity of periods completed per unit of time (often seconds)

\(\lambda = \frac{1}{T}\)

Phase

Initial position in the cycle

\(\phi = 2\pi [\frac{t_0 - t_1 }{T}]_1\)

Superposition principle

Property of some group of phenomenon such that their total effect in unison is linear

Conservation

Property of a physical system such that when isolated, some property of interest does not change

Concept that in a physical system some quantity is constant regardless of any variable

Physical system

Rigid body

Body that can be rotated without change in shape

Intrinsic property

Property of some physical object that is not dependent on any other external physical object