# Why it happens: dispersion

Site: Chromatic Aberration
URL:  https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/dispersion
Section: Page cluster

## Page content

Glass slows blue light more than red, so it bends blue more. A prism fans white light into a spectrum. A lens is a prism everywhere except dead center, which is why no single lens focuses every color at once.

- Back to start <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/start>
- Lateral fringing <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/lateral>
- Longitudinal fringing <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/longitudinal>
- The fix <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/the-fix>
### White light in

### Spectrum out

violet bends most

red bends least

One beam in, a fan out. Glass bends every wavelength differently, so violet deviates most and red least.


## All pages
- Chromatic Aberration: Page <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/start>
- Why it happens: dispersion: Page <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/dispersion>
- Lateral aberration: Page <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/lateral>
- Longitudinal aberration: Page <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/longitudinal>
- The fix: the achromatic doublet: Page <https://3dcms.info/buckrackley/sites/chromatic-aberration/3d/the-fix>

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