<P> Alternatives to optical microscopy which do not use visible light include scanning electron microscopy and transmission electron microscopy . </P> <P> On 8 October 2014, the Nobel Prize in Chemistry was awarded to Eric Betzig, William Moerner and Stefan Hell for "the development of super-resolved fluorescence microscopy," which brings "optical microscopy into the nanodimension". </P> <P> There are two basic types of optical microscopes: simple microscopes and compound microscopes . A simple microscope is one which uses a single lens for magnification, such as a magnifying glass . A compound microscope uses several lenses to enhance the magnification of an object . The vast majority of modern research microscopes are compound microscopes while some cheaper commercial digital microscopes are simple single lens microscopes . Compound microscopes can be further divided into a variety of other types of microscopes which differ in their optical configurations, cost, and intended purposes . </P> <P> A simple microscope uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image . The use of a single convex lens or groups of lenses are still found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes . </P>

What are two different types of light microscopes