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So light can pass through the slide to the objective.
Movements viewed through the microscope are exaggerated quite a bit. As such, it's best to attempt to line up the object on the slide by looking at the slide directly, rather than through the objective.
towards you
The microscope works because of two lenses (ocular and objective). The objective lens magnifies the object and produces a real image. This image is projected to the ocular lens and produces the virtual image, which is the one that the eye views. More specifically, light from substage bounces off a mirror and illuminates the object on the slide being viewed on the stage. The light is then bent into a parallel path and travels through the microscope tube (through the objective lens). Then the light is bent again into a small focus for the eye to view the magnified object through the ocular lenses. Switching the amount the object is magnified by switching the objective lens changes how much the light is bent.
A powerful beam of light through the transparent slide image is focused by a convex lens to produce an image on a screen .
A diaphragm is a simple device between the light and the slide that controls the amount of light that passes through the object being viewed.
The aperture.
A simple device between the light and the slide that controls the amount of light that passes through the object being viewed.
So light can pass through the slide to the objective.
Movements viewed through the microscope are exaggerated quite a bit. As such, it's best to attempt to line up the object on the slide by looking at the slide directly, rather than through the objective.
Movements viewed through the microscope are exaggerated quite a bit. As such, it's best to attempt to line up the object on the slide by looking at the slide directly, rather than through the objective.
towards you
You use it to see the object on your slide on a compound microscope. Point a flashlight at the mirror to see.
The microscope works because of two lenses (ocular and objective). The objective lens magnifies the object and produces a real image. This image is projected to the ocular lens and produces the virtual image, which is the one that the eye views. More specifically, light from substage bounces off a mirror and illuminates the object on the slide being viewed on the stage. The light is then bent into a parallel path and travels through the microscope tube (through the objective lens). Then the light is bent again into a small focus for the eye to view the magnified object through the ocular lenses. Switching the amount the object is magnified by switching the objective lens changes how much the light is bent.
A black slide is a slide that does not let any light through. A blank slide is an empty slide which may or may not have some preformatted elements in which you can put text, images, video, etc.
Push.
A bright light lights the slide (a prepared positive cut from the original film). The light travels through a lens to focus it and on to a screen. There are many mechanisms to change slides, from manual insertion, to rotary and linear slide trays.