What is a wave in physics?
A propagating dynamic disturbance moves through one or more quantities, changing them from their equilibrium state. Periodic waves oscillate repeatedly about a resting value at some frequency.
Questions about Wave
Short answers, pulled from the story.
When were gravitational waves first observed?
First observations of gravitational waves were announced on the 11th of February 2016 after decades of searching. These disturbances represent changes in spacetime curvature predicted by Einstein's general relativity theory.
How do electromagnetic waves propagate according to Maxwell's equations?
Rotation of an electric dipole produces electromagnetic waves that propagate at the speed of light. James Clerk Maxwell showed in the 19th century that electric and magnetic fields satisfy the wave equation in vacuum.
Who described the Doppler effect and when did this occur?
Christian Doppler described this phenomenon in 1842 while working with Austrian physics concepts. The Doppler effect describes frequency changes relative to observers moving near sources.
What are standing waves and how do they form?
Standing waves arise when boundaries block further propagation causing reflection back toward sources. Nodes appear at bridge and nut positions where opposed waves are antiphase and cancel each other.