Question

how does resonance work?

Answer 1

la résonance fonctionne avec l'intensité maximal et l’impédance est égale à la résistance

Answer 2

think or energy as + and -... i know that energy doesnt have a sign. but when a wave is at its maximum, its + or -

when a wave, is at its maxima (call it +) and you add another + wave to it, it becomes more +, thus more energy. everything has a natural frequency which they vibrate at, and if you have another wave, vibrating witht eh same frequency, the + s will add up to a large amount of energy.

Answer 3

While not an entirely rigorous definition, resonance is an amplification phenomenon that results when an external force oscillates at the same frequency as the system itself.

Think of pushing a child on a swing. The child oscillates back and forth at a given frequency; when the parent's external shoves coincide exactly with this natural frequency, the amplitude of the child's swings becomes larger and larger. However, if the parent's external forcing is at a frequency that is not in accordance with the child's natural frequency, the swinging can become quite chaotic! The amplitude of the swinging will vary greatly!

I hope that solidifies your understanding!