Khan Academy Static

In a Newtonian world we assume that the passage of time or lengths in space are absolute--that regardless of one's inertial frame of reference, everyone would agree that the same time passed in every frame of reference and that something of a certain length in one frame would be the same length in other frames. This leads to the speed of light needing to be relative depending on the frame of reference which contradicts observation. We reconcile observations by loosening our assumptions about absolute space and time. We explore this through Minkowski spacetime diagrams.

10215_Introduction_to_special_relativity_and_Minkowski_spacetime_diagrams.html

10214_Galilean_transformation_and_contradictions_with_light.html

10213_Visualizing_multiple_Newtonian_path_time_diagrams.html

10217_Angle_of_x_axis_in_Minkowski_spacetime.html

10212_Starting_to_set_up_a_Newtonian_path_time_diagram.html

10216_Measuring_time_in_meters_in_Minkowski_spacetime.html