Curated category
Physical phenomena
- Time dilationIn 1897, Joseph Larmor wrote that electrons orbiting a nucleus describe corresponding parts of their orbits in times shorter for the rest system.
- TimeTime is the continuous progression of existence that occurs in an apparently irreversible succession from the past, through the present, and into the future.
- Rayleigh scatteringIn 1869, John Tyndall observed faint blue-tinted light scattering off nanoscopic particulates in purified air. He conjectured that a similar process gave the…
- Nuclear fusionAmerican chemist William Draper Harkins proposed the concept of nuclear fusion in 1915. Francis William Aston invented the mass spectrometer in 1919 to…
- VacuumAncient Greek philosophers debated the existence of a vacuum, or void, in the context of atomism. Lucretius argued for the existence of vacuum in the first…