A microscope magnifies and resolves the image of an object that otherwise would be invisible to the naked eye. These objects include such items as human skin, the eye of a fly, cells of a living organism, viruses, individual molecules, and atoms. The...

Microscopes magnify images so that we can see things that otherwise would be invisible with the naked eye. The most common type, light microscope, uses glass lenses to focus light and create a high resolution image. Some light microscopes collect light...

Although it takes the magnifying and resolution power of the electron microscope to visualize strands of DNA, grosser(larger) genetic structures such as chromosomes are, with proper staining, visible with the magnifications attainable with a simple...

Microscopes have been in use in various forms for more than 3,000 years. The first types were extremely simple magnifiers made of globes of water-filled glass or chips of transparent crystal. Ancient Romans were known to use solid, bead-like glass...

A microscope (Greek: μικρόν (micron) = small + σκοπεῖν (skopein) = to look at) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. The science of investigating small objects using such an...

Microscopic colitis has 2 main subtypes, collagenous colitis and lymphocytic colitis, that are similar clinically and histologically and are distinguished mainly by the presence or absence of a thickened subepithelial collagen band. Microscopic colitis accounts for approximately 10% of chronic watery diarrhea and may...

Many images are closely associated with the 17th-century English experimentalist Robert Hooke: the hugely enlarged flea, the orderly plant units he named "cells," among others. To create them, Hooke used elaborately gold-stamped and turned microscopes such as the one pictured. Hooke's images, which...

Death penalty foes have warned for years of the possibility that an inmate being executed by lethal injection could remain conscious, experiencing severe pain as he slowly dies.That day may have arrived.Angel Nieves Diaz, a career criminal executed for killing a Miami topless bar manager...

Attorneys for Floyd Landis began trying to paint a picture Tuesday of incompetence at the French lab where the cyclist's urine was tested.Using computer logs from the lab, Landis' attorneys tried to prove lab workers manipulated the calibration of the machine that performed tests on...