These are the most obtuse physics I have ever seen.
Derivative of sin x and cos x Instructor: Gilbert Strang http://ocw.mit.edu/highlights-of-calculus The two key functions of oscillation have specially neat derivatives: The slope of sin x is cos x ! And the slope of cos x is – sin x. These come from one crucial fact: (sin x) / x approaches 1 at x =…
What is Gravity? In this video, gravity is visualized through the use of very special equipment and experiments. Gives proof of Newton’s law of universal gravitation. Explains that the mass, density and distance determine the amount of gravity or pull an object will generate. https://www.youtube.com/channel/UCFdKnjmeaUvJ4ZJmENHwCCA