From Preschool to Theoretical Physics - Coach Roland on Life Long Learning

Here is a nice simple explanation of the conservation of angular momentum, with simple math.  Many people wonder what worship is. Worship is not going to a building and singing once a week. Do you know when I experience worship? Actually many times a day. But there is a time when I never fail to gasp in awe and wonder. It is every time I see a math equation that describes a physical reality. Even more so, do I marvel when I see that the manipulation of the math continues to describe reality. For example in the equation for the conservation of angular momentum, L=mvr, with r being the distance between a massive object and a smaller object executing spin around a fixed point. when you do simple algebra to get v=L/(mr)  it means that when you decrease the distance r the velocity of the spin increases. That is why when an ice skater pulls her arms in, her spinning speed increases. I cannot help but marvel at how the relationship between the terms can be expressed in di...