SciShow

Gravitation: The Four Fundamental Forces of Physics #3 (2012x85)

Ημερομηνία προβολής: Ιουν 12, 2012

Hank continues our series on the four fundamental forces of physics with a description of gravitation - the interaction by which physical bodies attract with a force proportional to that of their masses, and which is responsible for keeping planets in orbit, among other things.