Microscope顯微鏡

1、.1MicroscopeOne of the most important tools of science.2Physicians used microscope to examine bacteria in blood cells.Material scientists and engineers used them to study the crystal structures within a metal or metal mixtures and to examine computer chips in other tiny electronic devices.Biologists

2、 observed algae（海藻) and protozoa（原生動物） and other single cell organism under the microscope.3The simplest optical microscope is a magnifying glass that has only one lens and could only magnify an object by 20 times.4 In the mid-1600An amateur Dutch scientist named Anton van Leeuwenhoek built the vast

3、ly improved microscope capable of magnifying 270 timesIt enabled him to observe and report microscopic life.5In the early 1800In 1931 German scientist demonstrated the first electron microscope. He used a beam of electrons rather than a beam of light to magnify imagesIn 1951The ion microscope was in

4、vented and it is used to examine metalsIn 1981Swiss and German scientists demonstrated the first scanning microscope. It works with a sharp point called probe(探針) to scanBetter glass-making methods made an access to undistorted images.6Anton van Leeuwenhoek may have not fully understood the role of microorganism in nature. His research paved the way for th