science

Series: Spacetime Physics | Part: 6 of 9 Primary Tag: FRONTIER SCIENCE Keywords: Alcubierre drive, warp drive, faster-than-light, exotic matter, spacetime manipulation Nothing can travel faster than light. This is usually stated as a fundamental limit, derived from special relativity. But that statement needs refinement. What special relativity actually says is:

Series: Spacetime Physics | Part: 5 of 9 Primary Tag: FRONTIER SCIENCE Keywords: time travel, closed timelike curves, Gödel universe, grandfather paradox, chronology protection Time travel is a staple of science fiction. It's also a legitimate topic in theoretical physics. General relativity doesn't distinguish past from future

Series: Spacetime Physics | Part: 9 of 9 Primary Tag: FRONTIER SCIENCE Keywords: spacetime, physics synthesis, relativity, cosmology, future directions Over eight articles, we've explored the physics of space and time—from Einstein's foundational revolutions through black holes and wormholes to the speculative frontiers of quantum gravity.

In the early 1840s, a young German physician named Julius Robert Mayer was working as a ship's doctor in the tropics. He noticed something odd: when he bled patients in Java, their venous blood was unusually red—almost as bright as arterial blood. Mayer knew that blood color

Here's a question that seems stupid until you think about it: How do you know a thermometer is telling the truth? You stick a thermometer in boiling water, it reads 100°C. You trust it. But why? The thermometer isn't measuring the water directly—it'

In 1850, Rudolf Clausius realized something that would haunt physics forever: heat flows from hot to cold, never the reverse. It sounds obvious. It's not. It's the reason the universe has a direction. That insight became the Second Law of Thermodynamics. But it was just the