As the refractive index of glass varies with wavelength, every single house of a lens that is determined by its refractive index also differs with wavelength, including the focal size, the image length, as well as the graphic magnification. The adjust of impression length with wavelength is named chromatic aberration, https://messiahbterd.frewwebs.com/30461831/the-2-minute-rule-for-intercom-system