REDWOOD CITY, Calif., March 26 (AP)  Albert V. Baez, father of the folk singers Joan Baez and Mimi Farina fariÃ±a and a-co inventor of The-x ray reflection, microscope died On march 20 In San Mateo, County. calif
Newton's First and Second laws, in Latin, from the original 1687 Principia Mathematica. Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces.
Keplerâs laws of planetary motion: First law (law of orbits) : Each planet revolves around the sun in an elliptical orbit with the sun situated at one of the two foci. Second law (law of areas) : The areal velocity of a planet around the sun remains constant.