lens paper is fragile
If you re-use it you will smear oils from your fingers on the lens. Additionally, dust from previously used paper can destroy the coating.
Make sure that you only clean your microscope lenses when they are dirty and use the proper materials! If your objective lenses are dirty, you can remove build-up with lens paper dipped in a very weak ammonia solution. Place one eye dropper full of household ammonia in 1/2 cup of water. If you have any sticky substances on your objectives such as balsam, oily materials or paraffin, this should be removed with xylol. To clean microscope eyepiece lenses, breathe condensation onto them and then wipe them with lens tissue. Kim-wipes are made by Kleenex and generally will work well. For stubborn spots, wipe the surface with tissue moistened with 95% alcohol. Wipe the lens dry with a dry tissue. If you see black specks when you look through the microscope, turn the eyepiece lens to see if the specks also turn. If so, the dust is on either the inside or outside eyepiece lens. Clean the eyepiece lens with lens tissue. If the spots remain, remove the eyepiece lens and brush the inside of the eyepiece lens with a camel hair brush or lens paper. DO NOT USE cloth, ordinary paper or fingers! Make sure that you use only special lens cleaning tissues! Periodically inspect the power cords and plugs for safety and have a supply of replacement bulbs available. Professional cleaning and adjusting should be performed whenever necessary at an optical shop specializing in microscopes. Usually the microscope manufacturer can recommend a qualified professional that services their microscopes and will not alter the warranty. When microscopes are not in use, they should be covered with plastic and stored in a safe area where they won't get knocked over or stolen. Keeping a clean microscope will ensure that you will get many years of quality use out of your microscope!
A lower power lens tells its name in the name. It is a lens in a microscope that has the lowest power, or only magnifies the object you are looking at a little.
A microscope is a tube that holds glass lens mounted that have the right focal properties that magnify the image.
Convex lens produces both real and virtual images. But concave lens produces only virtual images for real objects. If object is virtual then real image could be produced by a concave lens.
http://wiki.answers.com/Q/Why_should_you_use_a_piece_of_lens_paper_only_once"
If you re-use it you will smear oils from your fingers on the lens. Additionally, dust from previously used paper can destroy the coating.
Because lens paper will not scratch the lens. And it the proper way to clean the the lens... Email: sethalfredpacaro@yahoo.com Add me on facebook and i will answer your questions..
use only special grit free lens paper to clean the lenses.
The solution impregnated in lens papers will evaporate, so it is best to use a fresh sheet each time, and keep the remaining sheets well sealed when not in use.
The first step to clean a microscope lens is to take some lens cleaning paper that you can find in specialty shops or distributors of laboratory equipment. Alternatively, use certified cotton. Never touch the microscope lens with your fingertips since fingerprints can affect the microscope's visibility.
Who is the "Boss"? There are alot of "bosses" in Super Paper Mario
A simple microscope has only one lens.
there is only one:photograph objects from extremely close distance although it could be a nice and very expensive paper weight
Kodak cameras are only as good as their lenses. One can invest in a high quality lens that will allow the person to adjust for everything from brightness to distance. This in turn will result in a clearer image. When choosing a Kodak camera lens, one should not only have a price range in mind but should know what they hope to accomplish with this lens. Additionally, the type of camera one is using will also dictate the available options.
Most of the time coupons say that you can only get the discount with only one item. If you have multiple coupons, then you should be able to use them on two items of angel soft toilet paper.
It is something you can only use once: Paper muffin cups, lambchop panties , parchment paper. And appliances that only do one thing, like a waffle iron .