so that when viewing the specimen the cover slip won't move.
to make it clear for observation
For wet mount slides, yes.
so that when viewing the specimen the cover slip won't move.
so that when viewing the specimen the cover slip won't move.
Usually water is used and the Oxygen in the water gets trapped in between the slide cover and the slide. In this case, the same thing is actually happening, because you have forgotten about air. Air is everywhere, and if that slide cover is not pushed down from one end to the other, then Oxygen and even hydrogen bubbles can get trapped just like the oxygen from the water. Try letting the slide cover fall onto the slide. then gently tap- moving from one side to across the slide to the other to push the Oxygen out. If you randomly tap, more than likely air will be trapped.
cover slip
cover slip
cover slip
length of the slide= 47.10 feet
Because an air bubble, trapped between the slide and cover plate, shows as a dark'blob' under magnification. Using a drop of water to 'seal' the slide & cover plate together excludes the air - making the specimen more visible to the user.
That's called a 'cover slip'.
A wet mount slide is when a solution is applied to a microscope slide with whatever subject is being studied, typically under a slip cover.