to generate light, so the specimen can be examined (sends light through base, diaphragm, stage specimen, slide, objective lens, nose-piece, body, body tube, and eyepiece)
The source of magnification in a light microscope is the combination of the objective lens and the eyepiece lens. The objective lens gathers light from the specimen and forms an initial image, which is further magnified by the eyepiece lens to allow for detailed viewing by the observer.
The light source for a Scanning Electron Microscope (SEM) is emitted by a heated tungsten filament or a field emission gun. These sources produce a beam of electrons that is focused and scanned across the sample to generate the image.
A compound microscope can either have a light bulb or a mirror. If yours has a light bulb, turn it on to view your slide. You can't use the light in your room or lab to view your slide, because you will block all that light when you use the microscope. If your microscope has a mirror then you might need a another light source to point at the mirror to view your slide.
The parts of a microscope that provide light are the light source (such as a light bulb or LED), the condenser lens system that focuses the light onto the specimen, and the iris diaphragm that controls the amount of light reaching the specimen.
compound light microscope - cell theory - electron microscope
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IF YOU HAVE A MICROSCOPE THAT DOES NOT HAVE AN INTERNAL LIGHT SOURCE, YOU WILL HAVE TO USE THE EXTERNAL LIGHT SOURCE THAT IS PROVIDED IN THE CABINET WITH THE MICROSCOPE.
compound light microscope
mirroor
The light source of a microscope produces light that passes through the specimen being observed. It can be a bulb, LED, or mirror.
The source of radiation in a dissecting microscope is typically a halogen or LED light bulb. These light sources emit visible light that is used to illuminate the specimen being observed through the microscope.
The type of light source that reflects light rays for a microscope is typically a mirror or a prism. These components are used to direct and focus light onto the specimen being viewed through the microscope.
A microscope.
Without the light source, you wouldn't be able to see your sample very well!
Light source, can be mirror or electric light.
In a compound Microscope, Power Switch turns on the lamp( Light source)
It allows you to see the specimen.