The human eye misses a lot -- enter the incredible world of the microscopic! Explore how a light microscope works.
Diagram of a typical student light microscope, showing the parts and the light path A light microscope works very much like a refracting telescope, but with some minor differences. Let's briefly review how a telescope works. A telescope must gather large amounts of light from a dim, distan...
A light microscope works very much like a refracting telescope, but with some minor differences. Let's briefly review how a telescope works. A telescope must gather large amounts of light from a dim, distant object; therefore, it needs a large objective lens to gather as much light as pos...
You can learn more about the process in How Vision Works, How Cameras Work and How Film Works. Like photographs, holograms are recordings of reflected light. Making them requires steps that are similar to what it takes to make a photograph: A shutter opens or moves out of the path of a...
These two factors working together are very important in determining how a microscope works?How Does a Microscope Work? – ResolutionThe resolution of a specimen is highly dependent upon the light waves. The shortest distance between two points that the microscope can define as clearly being ...
If you use light along with a lens, you’ve got something called an optic or light microscope. Figure 1. A magnifying glass is the simplest form of lens used to view objects. Brightfield vs. fluorescence microscopy If you ...
You can see just how rough it is if you peer at it under a microscope. When light hits paper, the waves are reflected in all directions. This is what makes paper so incredibly useful -- you can read the words on a printed page regardless of the angle at which your eyes view the ...
The simplest way to count bacteria is called the direct microscopic cell count, which involves transferring a known volume of a culture to a calibrated slide and counting the cells under a light microscope. The calibrated slide is called a Petroff-Hausser chamber (Figure 7) and is similar to ...
How Nanotechnology Works By: Kevin Bonsor & Jonathan Strickland 2007 HowStuffWorks There's an unprecedented multidisciplinary convergence of scientists dedicated to the study of a world so small, we can't see it -- even with a light microscope. That world is the field of nanotechnology, the...
then the images recorded with a conventional microscope using basic illumination lack the necessary contrast needed to reveal critical details. Staining is used to highlight important features of the tissue by enhancing tissue contrast. This improves the investigator's ability to draw conclusions, such...