One Postulate
Useful links: * Paper * NotebookLM * One Postulate Website Two Postulates In 1905, Einstein built special relativity on two postulates. The first was a principle. The laws of physics look the same in every laboratory moving at constant velocity. No experiment you can perform inside a sealed, gliding room will tell you how fast you are moving. The second was an observation about light. Light travels at the same speed in every such frame, no matter who measures it. The first is a claim ab