Moonbear said:
LOL! Iansmith, he's still getting basic instructions on how to prepare a wet mount, do you think he knows what lyophilized means?
We never known but just in case
To Lypholyse:
to dry by freezing in a high vacuum
www.cogsci.princeton.edu/cgi-bin/webwn[/URL]
[QUOTE=Moonbear] Wow, that's more complex than any way I was ever taught to use a microscope! If you close the diaphragm and still see diffuse light, move it up until it forms a sharp circle or octagon (depending on the scope, it could be either). There might be a way to center the diaphragm too if the light is off to one side or another.
This is the problem with starting off with too fancy of a microscope, there's a lot more to adjust than with those dinky things that come with kids' science kits.
An easy way I've found to help students focus the microscope for the first time is to put your slide on, then adjust the stage all the way up (under the lowest magnification, not high power!), then slowly adjust it down while looking in the ocular (eyepiece) until the image comes into focus. Then, you can switch up to your higher power objectives, focusing with each one every time.[/QUOTE]
This is what the prof told us adjust a microscope on the first class of microbio lab method in our first semester. I remember that the diaphragm was fixed on our microscope it could not be move up or down.
I forgot about raking up the stage all the way. This was also in the instruction. The only problem, you have to make sure the student know that you have to go down a this point. With a higher objective, the slide will collide with the objective. While I was TAing, I sometime heard a "oh" at this point. The student move the stage up rather than down.