2006-09-13 00:28:43 · 4 answers · asked by Min 1 in Science & Mathematics ➔ Other - Science
If you mean in a compound optical microscope:
a. while lowering= to avoid breaking the slide/ object/ lens.
b. while focussing: You need to get the slide in focus- all 3 sets of lenses- your eyes, eyepiece(that's what you look thru) and the objective lens- all together make up the optical path.
2006-09-13 00:42:03 · answer #1 · answered by kapilbansalagra 4 · 1⤊ 0⤋
Doing this just makes it easier for u, to focus on the slide faster. Else if u r not looking into the lens u might miss the point where the contrast is good and the sample clear.
2006-09-13 07:40:05 · answer #2 · answered by abhishek.nayak 2 · 0⤊ 0⤋
so you dont loose the speciamen from your view... its a bugger to find again and gets harder the higher the resolution is...
usually you just start again.
2006-09-13 10:41:25 · answer #3 · answered by wolschou 6 · 0⤊ 0⤋
umm so you don't break the slide?
2006-09-13 07:35:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋