安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Wave - Wikipedia
Surface waves in water showing water ripples In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities Periodic waves oscillate repeatedly about an equilibrium (resting) value at some frequency When the entire waveform moves in one direction, it is said to be a travelling wave; by contrast, a pair
- S wave - Wikipedia
In seismology and other areas involving elastic waves, S waves, secondary waves, or shear waves (sometimes called elastic S waves) are a type of elastic wave and are one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves [1] S waves are transverse waves, meaning that the direction of particle movement of an S wave is
- Mechanical wave - Wikipedia
Mechanical wave Ripple in water is a surface wave In physics, a mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a material medium [1] Vacuum is, from classical perspective, a non-material medium, where electromagnetic waves propagate
- Wave equation - Wikipedia
The wave equation is a second-order linear partial differential equation for the description of waves or standing wave fields such as mechanical waves (e g water waves, sound waves and seismic waves) or electromagnetic waves (including light waves) It arises in fields like acoustics, electromagnetism, and fluid dynamics This article focuses on waves in classical physics Quantum physics
- Surface wave - Wikipedia
Surface wave A diving grebe creating surface waves In physics, a surface wave is a mechanical wave that propagates along the interface between differing media A common example is gravity waves along the surface of liquids, such as ocean waves Gravity waves can also occur within liquids, at the interface between two fluids with different
- Matter wave - Wikipedia
Matter waves are a central part of the theory of quantum mechanics, being half of wave–particle duality At all scales where measurements have been practical, matter exhibits wave -like behavior For example, a beam of electrons can be diffracted just like a beam of light or a water wave The concept that matter behaves like a wave was proposed by French physicist Louis de Broglie
- Simple wave - Wikipedia
A simple wave is a flow in a region adjacent to a region of constant state [1] In the language of Riemann invariant, the simple wave can also be defined as the zone where all but one of the Riemann invariants are constant in the region of interest, and consequently, a simple wave zone is covered by arcs of characteristics that are straight
- Longitudinal wave - Wikipedia
Longitudinal waves are waves which oscillate in the direction which is parallel to the direction in which the wave travels and displacement of the medium is in the same (or opposite) direction of the wave propagation Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when travelling through a medium, and pressure
|
|
|