In physics, mathematics, and related fields, a wave is a propagating dynamic disturbance of one or more quantities. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium value at some frequency. When the entire waveform moves in one direction, it is said to be a traveling wave; by contrast, a pair of superimposed periodic waves traveling in opposite directions makes a standing wave. In a standing wave, the amplitude of vibration has nulls at some positions where the wave amplitude appears smaller or even zero. Waves are often described by a wave equation or a one-way wave equation for single wave propagation in a defined direction. Two types of waves are most commonly studied in classical physics. In a mechanical wave, stress and strain fields oscillate about a mechanical equilibrium.

Read more in the app

High frequency brain wave patterns in the motor cortex can predict an upcoming movement

Physicists Observe Direct Evidence of Effective Wave Growth Theory in Space

Black Hole Carnivals May Lead to Cosmic Crashes Seen by Gravitational-Wave Detectors

Extreme 'Rogue Wave' in The North Pacific Confirmed as Most Extreme on Record

'A perfect little system': Physicists isolate a pair of atoms to observe p-wave interaction strength for the first time

Extinction Wave Imminent: 23 Million Years of Evolution Under Threat in Madagascar

Millimeter Wave-Absorbing Magnetic Materials: Tech To Absorb Electromagnetic Waves in the 6G Band

To confront the climate crisis, we also need a wave of innovation

Gravitational wave hunters will get an ultracool new tool in 2023

Far-Flung Forces Caused the 2021 Pacific Northwest Heat Wave

Covid-19: Gabriel Leung reflects on Hong Kong’s devastating fifth wave

Shock wave from sun has opened up a crack in Earth's magnetic field, and it could trigger a geomagnetic storm

China's COVID Wave Could Kill One Million People, Models Predict

Shock wave from sun has opened up a crack in Earth's magnetic field, and it could trigger a geomagnetic storm

Gravitational Wave Observatories Could Search for Warp Drive Signatures

Your Multivitamin Won't Save You : Short Wave

Deadly 'rogue wave' smashes into cruise ship near Antarctica — but where did it come from?

Models predict massive wave of disease and death if China lifts ‘zero COVID’ policy

Scientists demonstrate continuous-wave lasing of deep-ultraviolet laser diode at room temperature

Upgrade your home gym for less with this Hydrow Wave Black Friday rowing machine deal