University:
American Career College
Course:
MICR-112 | General Microbiology
Academic year:

2020
Views:

346

Pages:

6
Author:

pitoGx

MICROSCOPY DEFINITION Microscope (Greek: micron = small and scopos = aim) MICROSCOPE - An instrument for viewing objects that are too small to be seen by the naked or unaided eye. MICROSCOPY - The science of investigating small objects using such an instrument is called Microscopy. HISTORY  Hans and Zacharias Janssen first developed it in Holland in 1590.  Galileo Galilei and Kepler made Occhiolino or Compound Microscope in 1609.  Christian Huygens, developed a simple 2-lens ocular system that was chromatically corrected in 1620.  Faber coined the term Microscope in 1625.  Leeuwenhoek developed a first simple microscope with a magnification of 200x – 300x in 1676. HISTORY CONT…  Joseph Jackson Lister reduced spherical aberration in Compound microscope in 1830.  Ernst Ruska and Max Knoll developed Electron Microscope in 1931.  Frits Zernike developed Phase-contrast microscope in 1932. Antonie Philips van Leeuwenhoek (1632-1723)  First to observe bacteria and other micro-organisms which he originally referred to as animalcules ( Latin animalculum = tiny animal),using single-lens microscope constructed by himself.  He is called as Father of Microscopy. Leeuwenhoek Microscope