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(This video has Subtitles) In this video i try to make an approachable explanation of what is sound. Because is something so fundamental in our lifes, deserves to be understanded in physical terms but don't worry, this is a simplified version. First is explained how sound is a vibration and a wave, then is approached a very important property of sound, Frequency.I also talk about the speed of sound and how it changes with the medium in wich it propagates.In the end i mention some cool applications of sound like breaking glasses, visualizing sound and levitating small objects.
A shaped charge is a device capable of focusing the energy of an explosion in one point, this makes it capable of piercing many inches of steel. This kind of explosive charge was first used in the second world war as a anti-tank weapon. The effect that describes the focusing of the explosion's energy by a hollow or void cut was discovered by Mr Edward E. Munroe. In this video you can learn more about explosions, shaped charges, the Munroe effect, shock waves and waves. If you like to learn cool physics effects, visit my channel: https://www.youtube.com/channel/UC2av... Facebook page: