Free Classifieds
Home | Post Ad | My Account | Help | Affiliate Program | Local Classifieds | Just Viewed | Keyword Alerts
Username:
Password:
Affiliate Program
Post Ad
Enter your zip to find stuff near you
 
 Classifieds > Services > EducationAffiliate Ad (info)
An affiliate ad has been posted by a person or company who markets/sells products for another person or company. The advertiser would usually receive a commission for a sale or lead generated.
- Flag
Click here to flag this ad for review or to report a problem

Parts of a Microscope

Item ID#:2574354Location:
Unlisted
Seller ID#:571214 Views:
535
Price:$UnspecifiedExpires:expired

This classified ad has expired

Click here to view current advertisements similar to this one.


The microscope was invented by two Dutch eyeglass makers named
Zacharias Jansen and his father Hans in the year 1590. They put several
lenses in to a tube and found out that it can enlarge an object by as
much as 9 times its normal size and the images were not so clear. The
first microscopes were used more as a novelty item rather than a
scientific instrument. Galileo Galilei heard of this new invention and
made a better microscope. In the late 1600's, Anthony Van Leeunhoek made
use of a real microscope. His microscope had a magnification of 270
times, which during those times other microscopes can only achieve 50
times of magnification. This led to many scientific discoveries and
people started seeing things in places where they seem to be empty.Parts
of a Microscope:Eyepiece lens - It is the lens where we look through, its
magnification is usually 10-15 times.Tube - This connects the objective lens and the eyepiece.Arm - It gives support to the tube and connects it to the base.Base - It supports the whole microscope and is located at the
bottom.Mirror - Used to reflect light from an external light source to the
bottom of the stage. This is used to give light to the specimen on the
stage.Stage - It is where the slides are placed. The stage has clips to
hold the slide in place, it has adjustable knobs that move the platform
left and right; and up and down.Turret or the Revolving Nosepiece - Two or more objective lenses are
in this part. These objective lenses can be rotated to change power.Objective lenses - There are usually three objective lenses on a
microscope. The shortest lens has the lowest magnifying power and the
longest one has the highest magnifying power. The longest lens is
retractable because it has a spring in it in order to protect it from
hitting the slide.Rack Stop - The rack stop keeps users from breaking the lens or
slide by preventing them to adjust the lens too low. Factories set this
and should only be adjusted when using very thin slides.Condenser Lens - Condenser lenses focus light to the specimen making
images sharper. They are more useful at the highest powers.Diaphragm or Iris - The diaphragm is used to vary the intensity and
size of the light that is focused to the slide.





Learn more about microscopes. Choose the
best microscope in the market today. Choose Leitz microscopes!
Share
My Account
Post Ad
Local Classifieds
Help Topics
Copyright© 1999 - 2015 USFreeads. All rights reserved
Please read our Terms of service & Privacy Policy

Contact Us
Privacy Policy
Terms of Service
0

BdtBpdvHBkvkpd
8/29/2015 10:02:40 AM UTC