Online Microbiology and Biology Notes
Microscopy and Microscope Notes. Notes on Microscopy. Online Microscopy related notes. Microscopy Notes for undergraduate and graduate students with diagrams.
Brightfield Microscope Definition Brightfield Microscope is also known as the Compound Light Microscope. It is an optical microscope that uses light rays to produce a dark image against a bright background. It is the standard microscope that is used in Biology, Cellular Biology, and Microbiological Laboratory studies. This microscope is used to view fixed and … Read more Brightfield Microscope (Compound Light Microscope)
Dissecting microscope (Stereo microscope) These are also known as stereoscopic microscopes. This is a type of digital optical microscope designed with a low magnification power (5x-250x), by use of light reflected from the surface of the specimen, and not the light reflected the specimen. Its primary role is for dissection of specimens and viewing and … Read more Dissecting microscope (Stereo or stereoscopic microscope)
Transmission Electron Microscope (TEM) definition This is a powerful electron microscope that uses a beam of electrons to focus on a specimen producing a highly magnified and detailed image of the specimen. The magnification power is over 2 million times better than that of the light microscope, producing the image of the specimen which enables … Read more Transmission Electron Microscope (TEM)
Pocket Microscope Definition This is a microscope that has a special design that is small and portable, hence the name ‘pocket’. They are pocket-size but some are a bit larger. Their size is too small to hold a mirror to place the image in its rightful position. However, they have a small stage where one … Read more Pocket Microscope
Definition The atomic force microscope (AFM) is a type of scanning probe microscope whose primary roles include measuring properties such as magnetism, height, friction. The resolution is measured in a nanometer, which is much more accurate and effective than the optical diffraction limit. It uses a probe for measuring and collection of data involves touching … Read more Atomic Force Microscope (AFM)
USB Microscope Definition This is a type of digital Microscope which is connected to a computer through a USB port. It works on low power. They have installed webcam with a high-powered macro lens. they also have an inbuilt LED light constructed near the lens. The working principle of the USB Microscope As a digital … Read more USB Microscope- definition, principle, parts, examples, uses
Introduction and history of a digital microscopes A digital microscope is a modern microscope that lacks an eyepiece, an immense difference from the traditional optical microscope. They have a digital camera which is the detector and the image output device. The display of the image is done on a computer screen or monitor, defining the … Read more Digital Microscope
Introduction and History of the Confocal Microscope The concept of confocal microscopy was initially developed by Marvin Minsky in the 1950s, at Harvard University with an aim of viewing the neural network without staining the tissues but it did not bear fruit due to lack of enough light source and a computerized system to store … Read more Confocal Microscope
Introduction and History of the Inverted Microscope Invented in 1850 by a faculty member of Medical College of Louisiana, named J. Lawrence Smith, this microscope just like it sounds is a light microscope which has its components placed in an inverted order, this means, light source and condenser lens are placed above the specimen stage, … Read more Inverted Microscope
The first Scanning Electron Microscope was initially made by Mafred von Ardenne in 1937 with an aim to surpass the transmission electron Microscope. He used high-resolution power to scan a small raster using a beam of electrons that were focused on the raster. He also aimed at reducing the problems of chromatic aberrations images produced … Read more Scanning Electron Microscope (SEM)
History of Microscopy: Overview The evolution of the Microbiology field put to perspective the need to identify, view, observe and understand microorganisms, including their structural morphologies and mechanisms. Microbiology’s scope is to study organisms and minute agents that can only be examined and observed with a microscope. Although scientifically, the first simple microscope was discovered … Read more Light Microscope- definition, principle, types, parts, magnification
Overview of microscope Having been constructed in the 16th Century, Microscopes have revolutionalized science with their ability to magnify small objects such as microbial cells, producing images with definitive structures that are identifiable and characterizable. So, what are microscopes? Microscopes are instruments that are used in science laboratories, to visualize very minute objects such as … Read more Parts of a microscope with functions and labeled diagram