Tag
#light
2 articles
Physics
Optics: How Light Bends and Focuses
Light bends when its speed changes crossing a boundary — that is refraction — and lenses harness the same effect to focus rays and form real or virtual images.
10 minSep 2, 2026
Chemistry
Spectroscopy: Reading Matter with Light
Atoms absorb and emit light only at wavelengths set by their electron energy levels, so light carries a fingerprint of composition — the basis of knowing what stars, galaxies, and unknown compounds are made of, remotely.
10 minJul 4, 2026