Joel Gomes

In this video i try to make an approachable explanation of what is sound. Because is something so fundamental in our lives, deserves to be understood in physical terms but don't worry, this is a simplified version. First is explained how sound is a vibration and a wave, then ...more

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 ...more

Do we only use 10% of our brain? This myth establishes that most of the human brain is unused, suggesting that we only use a small portion of it and because of this some kind of secret power can be unleashed, turning us into superheroes able to use telekinesis, telepathy and ...more