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Assingnment Work
OF
pHYSICS
ON
COMPOUND MICROSCOPE
IS
-
Giriraj Singh Shaktawat
B.Sc + M.Sc [ 2nd Sem]
Department :- Forensic Science
Session:- 2018-2019
Serial No.:- 17
Shri Vaishnav Institute of Forensic Science
Shri Vaishnav Vidhyapeeth Vishwavidhyalaya
INDORE (M.P.)
CONTENTS:-
• COMPOUND MICROSCOPE
• CHARACTERISTICS OF THE COMPOUND MICROSCOPE.
• DIFFERENT PARTS OF COMPOUND MICROSCOPE.
• WORKING OF COMPOUND MICROSCOPE.
• USES OF COMPOUND MICROSCOPE.
COMPOUND MICROSCOPE
A Compound Microscope is an instrument
that is used to view magnified images of
small objects on a glass slide. It can achieve
higher levels of magnification than stereo
or other low power microscope and reduce
chromatic aberration. It achieve this
through the use of two or more lenses in
the objective and the eyepiece. The
objective lens or objectives located on the
nosepiece have a short focal length and are
close to the target object where it collects
light and focuses the image of the object
into the microscope.The second lens ,in the
eyepiece ,has a longer focal length and
further enlarges the image.
Chacteristics of Compound Microscope
➢ Two or More Convex lenses.
➢ Typical magnification range between 40x
and 1000x.
➢ One objective used at one time.
➢ Magnifies with the help of light reflection
(in mirror microscope).,
➢ Available in Monocular,binocular and
trinocular configuration.
Parts of Compound Microscope
Eyepiece: The lens the viewer looks through to see the specimen. The
eyepiece usually contains a 10X or 15X power lens.
Diopter Adjustment: Useful as a means to change focus on one eyepiece so
as to correct for any difference in vision between your two eyes.
Body tube (Head):The body tube connects the eyepiece to the objective
lenses.
Arm: The arm connects the body tube to the base of the microscope.
Coarse adjustment: Brings the specimen into general focus.
Fine adjustment: Fine tunes the focus and increases the detail of the
specimen.
Nosepiece: A rotating turret that houses the objective lenses. The viewer
spins the nosepiece to select different objective lenses.
Objective Lenses: One of the most important parts of a compound
microscope, as they are the lenses closest to the specimen.
A standard microscope has three, four, or five objective lenses that range
in power from 4X to 100X. When focusing the microscope, be careful that
the objective lens doesn’t touch the slide, as it could break the slide and
destroy the specimen.
Specimen or slide:- The specimen is the object being examined. Most
specimens are mounted on slides, flat rectangles of thin glass.
The specimen is placed on the glass and a cover slip is placed over the
specimen. This allows the slide to be easily inserted or removed from the
microscope. It also allows the specimen to be labeled, transported, and
stored without damage.
Stage: The flat platform where the slide is placed.
Stage clips: Metal clips that hold the slide in place.
Stage height adjustment (Stage Control): These knobs move the stage left
and right or up and down.
Aperture: The hole in the middle of the stage that allows light from the
illuminator to reach the specimen.
Illumination: The light source for a microscope. Older microscopes used
mirrors to reflect light from an external source up through the bottom of the
stage; however, most microscopes now use a low-voltage
Base: The base supports the microscope and it’s where illuminator is located.
Slide
stage
Objective
Lenses
Base
Working Of Compound Microscope
Lights starts it’s journey at the base
of the compound microscope from
the source of the illumination, or by
reflection by mirror.This light
travels upwards through the
condenser and aperture where it
then passes through the contents
of the stage . The image of the
slide or spicemen on the stage is
picked up by the powerful
magnification of the objective lens
above it (4x,10x or 100x). The light
then moves up the head of the
microscope where it reaches the
eyepieces and it again magnified by
the ocular lens (5x-30x).
Uses of Compound Microscope
The Compound Microscope in
hospitals and in forensic labs, for
scientists and students,
bacteriologists and biologists so
that they may view bacteria, plant
and animal cells and tissues, and
various microorganisms the world
over.
Compound microscopes have
furthered medical research, helped
to solve crimes, and they have
repeatedly proven invaluable in
unlocking the secrets of the
microscopic world.
Compound microscope

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Compound microscope

  • 1. Assingnment Work OF pHYSICS ON COMPOUND MICROSCOPE IS - Giriraj Singh Shaktawat B.Sc + M.Sc [ 2nd Sem] Department :- Forensic Science Session:- 2018-2019 Serial No.:- 17 Shri Vaishnav Institute of Forensic Science Shri Vaishnav Vidhyapeeth Vishwavidhyalaya INDORE (M.P.)
  • 2. CONTENTS:- • COMPOUND MICROSCOPE • CHARACTERISTICS OF THE COMPOUND MICROSCOPE. • DIFFERENT PARTS OF COMPOUND MICROSCOPE. • WORKING OF COMPOUND MICROSCOPE. • USES OF COMPOUND MICROSCOPE.
  • 3. COMPOUND MICROSCOPE A Compound Microscope is an instrument that is used to view magnified images of small objects on a glass slide. It can achieve higher levels of magnification than stereo or other low power microscope and reduce chromatic aberration. It achieve this through the use of two or more lenses in the objective and the eyepiece. The objective lens or objectives located on the nosepiece have a short focal length and are close to the target object where it collects light and focuses the image of the object into the microscope.The second lens ,in the eyepiece ,has a longer focal length and further enlarges the image.
  • 4. Chacteristics of Compound Microscope ➢ Two or More Convex lenses. ➢ Typical magnification range between 40x and 1000x. ➢ One objective used at one time. ➢ Magnifies with the help of light reflection (in mirror microscope)., ➢ Available in Monocular,binocular and trinocular configuration.
  • 5. Parts of Compound Microscope Eyepiece: The lens the viewer looks through to see the specimen. The eyepiece usually contains a 10X or 15X power lens. Diopter Adjustment: Useful as a means to change focus on one eyepiece so as to correct for any difference in vision between your two eyes. Body tube (Head):The body tube connects the eyepiece to the objective lenses. Arm: The arm connects the body tube to the base of the microscope. Coarse adjustment: Brings the specimen into general focus.
  • 6. Fine adjustment: Fine tunes the focus and increases the detail of the specimen. Nosepiece: A rotating turret that houses the objective lenses. The viewer spins the nosepiece to select different objective lenses. Objective Lenses: One of the most important parts of a compound microscope, as they are the lenses closest to the specimen. A standard microscope has three, four, or five objective lenses that range in power from 4X to 100X. When focusing the microscope, be careful that the objective lens doesn’t touch the slide, as it could break the slide and destroy the specimen. Specimen or slide:- The specimen is the object being examined. Most specimens are mounted on slides, flat rectangles of thin glass. The specimen is placed on the glass and a cover slip is placed over the specimen. This allows the slide to be easily inserted or removed from the microscope. It also allows the specimen to be labeled, transported, and stored without damage.
  • 7. Stage: The flat platform where the slide is placed. Stage clips: Metal clips that hold the slide in place. Stage height adjustment (Stage Control): These knobs move the stage left and right or up and down. Aperture: The hole in the middle of the stage that allows light from the illuminator to reach the specimen. Illumination: The light source for a microscope. Older microscopes used mirrors to reflect light from an external source up through the bottom of the stage; however, most microscopes now use a low-voltage Base: The base supports the microscope and it’s where illuminator is located.
  • 9. Working Of Compound Microscope Lights starts it’s journey at the base of the compound microscope from the source of the illumination, or by reflection by mirror.This light travels upwards through the condenser and aperture where it then passes through the contents of the stage . The image of the slide or spicemen on the stage is picked up by the powerful magnification of the objective lens above it (4x,10x or 100x). The light then moves up the head of the microscope where it reaches the eyepieces and it again magnified by the ocular lens (5x-30x).
  • 10. Uses of Compound Microscope The Compound Microscope in hospitals and in forensic labs, for scientists and students, bacteriologists and biologists so that they may view bacteria, plant and animal cells and tissues, and various microorganisms the world over. Compound microscopes have furthered medical research, helped to solve crimes, and they have repeatedly proven invaluable in unlocking the secrets of the microscopic world.