Light microscopes reveal the structures of living cells and tissues, according to HowStuffWorks.com. Using light microscopes, scientists have greatly increased human knowledge in the biomedical science fields. Even as they make strides in available technology, the light microscope continues to provide a powerful tool for scientists.Know More
The use of light microscopes goes beyond biological samples. They ALSO reveal the structure of rocks and other nonliving substances. In the electronics industry, a light microscope becomes a tool for inspection of semiconductors for quality assurance.
However, the light microscope is not without limitations. Thicker samples, which do not allow light to pass through them, are not visible under the light microscope. In addition, even if a light microscope includes perfect illumination and a perfect lens, objects smaller than half the wavelength of light are indistinguishable. Using white light, with an average wavelength of 0.55 micrometers requires samples larger than 0.275 micrometers. Lines closer than this merge into a single line. Round objects with diameters smaller than this become a blur at best, according to About.com. Using white light, the magnification is limited to 1250x. Blue light with its shorter wavelength allows the light microscope to provide magnifications up to 5000x. The electron microscope, while not a light microscope, allows the scientist to view objects not visible through the ordinary light microscope.Learn more about Chem Lab
A high power objective lens is an important part of a microscope that magnifies up to 40 times. This lens is used for observing fine details such as muscle striations and retinal nerve cells. The strength is second only to an oil immersion objective lens, which magnifies up to 100 times.Full Answer >
The nose piece of a microscope is responsible for holding multiple lenses that can be adjusted. This adjustment allows the viewer to look at the object under different levels of magnification.Full Answer >
The revolving nosepiece of a microscope is called the turret. The turret is the part of a compound microscope that holds the objective lens. It can be rotated easily to switch between lenses of different powers.Full Answer >
The low-power objective on a microscope is the shortest or second shortest objective lens found on standard laboratory microscopes. Low-power objective lenses typically add 10x to the magnifying power of the microscope.Full Answer >