00:04 Waves reflect at the end of a medium 00:13 At the boundary of the material, the wave is reflected backward and its amplitude is flipped. 00:17 Wave motion in a rope with a fixed end 00:27 A non-oscillating point is inverted and reflected back in the opposite direction. 00:30 A wave hits a point at the material boundary and the point is free. 00:38 The amplitude of 34.86 38.88 does not flip, it just reflects backwards. 00:45 The bottom animation concept is important. 00:53 Property of standing waves
00:04 Waves reflect at the end of a medium
00:13 At the boundary of the material, the wave is reflected backward and its amplitude is flipped.
00:17 Wave motion in a rope with a fixed end
00:27 A non-oscillating point is inverted and reflected back in the opposite direction.
00:30 A wave hits a point at the material boundary and the point is free.
00:38 The amplitude of 34.86 38.88 does not flip, it just reflects backwards.
00:45 The bottom animation concept is important.
00:53 Property of standing waves
It means amplitude is the sama before and after reflection?