Comments by "José Veinte Genario -NISU" (@joseveintegenario-nisu1928) on "Beyond Clever - How Two Stroke Exhaust Pipes Really Work" video.

  1. Nice, so you say a solid object has a higher sound impedance, 'opposes more resistance' to sound propagation than a less dense medium as the air. How this compares to light propagation, that when going from a more refringency medium to a lower refringency medium goes away from the perpendicular to interface surface? Actually, I had the concept sound travels faster inside water than inside air. No difference between water waves and electromagnetic waves: on the Sea, the water molecules vibrate, go up and down, as the wipers on the bus (Modern Lovers), in EM waves, it's the particle part of it that vibrates. From observations, we can deduct the speed of light is a property of space-time, whatever this is, not a property of light. In earthquakes, destructive waves travel slower respect to other waves, thus detection of faster vibration waves will give some warning time to prepare escape from the destructive waves coming later. All waves, from physiotherapy to gamma rays, are vibrations, just frequency changes.
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