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What is Time? – Time and space in Physics

By |2018-05-31T11:49:26+00:00August 19th, 2017|Physics, When|

Time and space: a sundial from Ukraine (ca. 1300 BC) - one of the two oldest sundials in the world Are time and space the same thing? Nobody knows what time is, or how it works. Time seems to be closely related to space, and it's possible that space and time are different ways [...]

Newton’s Laws of Motion – Movement – Physics

By |2018-05-31T11:49:25+00:00August 17th, 2017|Physics|

Light takes years to reach us from these stars far away in space. When solid objects move through space, they follow certain rules that let us predict how they will act. We call the first three rules Newton's Laws of Motion, and they say that: An object in motion tends to remain in motion, and an [...]