Learn complete Physics Video Lectures on Gravitation for IIT JEE by Ashish Arora. This is the most comprehensive website on Physics covering all the topics in detail. No wonder, in its trial run itself, this one of its kind website topped the world ranking on Physics learning. To keep yourself updated about physics galaxy activities […]
But why is a sphere's surface area four times its shadow?
The formula is no mere coincidence. Help fund future projects: An equally valuable form of support is to simply share some of the videos. Special thanks to these supporters: Discussion on Reddit: The first proof goes back to Greek times, due to Archimedes, who was charmed by the fact that a sphere has 2/3 the […]