What is Worship - the Conservation of Angular Momentum and the Figure Skater

-
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 different ways and  the result is still true.

Another example is E=mc^2      Many people do not know that Albert Einstein first wrote the equation as m=E/c^2    Increasing the energy increases the mass a little. That is why when you click the spring on your ball point pen, the energy in the spring makes the pen a tiny bit heavier.


Popular posts from this blog

My Child Will Not Do Her Homework

-
Image
So many parents get so bogged down in the homework issue that they forget about the most important thing of all: the relationship. Relating to your child with love and understanding is a million times more important than any particular homework assignment. . How much homework did Einstein do? Who knows? Who cares? He did not do very well in school. So instead of homework, he was probably doodling and daydreaming. Does your child doodle and daydream? Maybe he or she is another Einstein. . Many people do not know that when Mozart was a kid, his dad took him on several long trips. His dad intuitively knew that music was important to his son. He took his little son to major music centers so that he could meet composers, perform, attend concerts and see operas. One trip, when Mozart was 7 years old lasted 3 years! He and his dad visited all the major music centers of Western Europe. . Another trip, when he was 11 years old, lasted 15 months. He got to meet Johann Christian Bac...
Read more

Pastor Speaks Out Against Spanking and Child Abuse

-
Image
"Should parents spank their kids? " Absolutely not," says Roland Trujillo, pastor, lecturer, and author of 17 books. "It is totally unnecessary."   "For 25 plus years I have advocated against spanking. What does spanking accomplish? It introduces the child to fear, to trauma, and often to rage. It turns some children into fearful conformists, and others into rebels because of their hatred of the parent who used violence on them.  Spanking is often a euphemism for something much worse. Inflicting harm on an innocent defenseless child is despicable. It is bullying--the evidence of a tyrant, a large person hurting a small person. It is evidence of lack of patience, kindness, gentleness, self control, forbearance, and wisdom. It is a massive betrayal.  Here are two things that need to be stated. Child abuse is a little known contributing factor to violence against women. The male child who is beaten, slapped, spanked, yelled at, teased, or verbally...
Read more