phenomenon where a system oscillation reaches maximum amplitude at specific driving frequency
every physical system has one or more natural frequencies determined by its structure
when driving frequency matches natural frequency, energy transfer is maximized
mechanical resonance: tuning fork, bridge vibration, wine glass shattering at its resonant pitch
electrical resonance: LC circuits tuned to select specific radio frequency bands
orbital resonance: gravitational coupling locks planetary or satellite orbits into integer ratios
chemical resonance: electron delocalization across multiple bonding structures (benzene ring)
acoustic resonance: musical instruments amplify specific harmonics through resonant cavities
social resonance: ideas, memes, and movements amplify when they match cultural receptivity
resonance bridges physics, chemistry, biology, engineering, and social dynamics