Distributed or spread over a wide area; scattered in various directions or caused to break up and move apart.
From Latin 'dispersus', past participle of 'dispergere' meaning to scatter widely, from 'dis-' (apart) plus 'spargere' (to scatter). The word entered English through Old French in the 14th century, initially used for scattering people or objects.
In optics, white light disperses into rainbow colors when passed through a prism because different wavelengths bend at slightly different angles - this same principle explains why we see rainbows after storms and why diamonds sparkle with multiple colors. Newton's famous prism experiments with dispersed light laid the groundwork for our understanding of the electromagnetic spectrum.
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