the.com/diffraction pattern
Light bending around edges and arguing with itself until it leaves a scoreboard.
means The pattern of bright and dark bands or rings formed when waves (light, sound, water) bend around obstacles or through openings and overlap with each other.
from From Latin diffringere, 'to break apart' — dis- ('apart') plus frangere ('to break'), the same root that gives us 'fracture' and 'fragment.' The term was coined in the 1600s by the Italian scientist Francesco Maria Grimaldi, who noticed light passing through a narrow slit didn't just cast a sharp shadow but 'broke' into unexpected bands of light and dark. He named the phenomenon for the breaking-apart look of the light itself, long before anyone understood it as waves interfering with one another.
- actual cause
- waves overlapping, not light bending per se
- proof of concept
- double-slit pattern confirmed light's wave nature, 1803
- bonus use
- x-ray versions reveal DNA's double helix structure
- dark bands
- spots where waves cancel each other out exactly