What are the characteristics of each microscope
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
What are the characteristics of each microscope
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
Solution
The characteristics of each microscope is as follows:
1.COMPOUND MICROSCOPE
In compound microscope the objective lens forms a real, inverted and magnified image of the
object. The eye piece acts like a magnifying glass and forms a virtual erect and magnified image.
Object is placed outside the principal focus of the objective lens. It consists of two convex lens,
ocular, close to the eye and s3cond objective lens. It also reduces chromatic abberrations.
2. STEREO (DISSECTING)
It is an optical microscope which is designed for low magnification, it uses light reflected from
the surfacevof an object rather than transmitted through it. It forms three dimensional erect
image as the prism under the eye piece reverses the image.
3. PHASE CONTRAST
It is used to examine biological tissues (live microorganisms). It is a type of light microscopy
that increases contrasts of transparent and colourless objects. This is achieved by influencing the
optical path of the light. Thus contrast of light and dark makes the specimen visible to the human
eye.
4. SCANNING (SEM).
It is used for producing high resolution images of a sample surface. The images have 3-D
appearance and best used to judge the surface structure of the sample. It produces image using
focused beam of electrons. In SEM, the picture is shown on the monitor.
5.TRANSMISSION (TEM).
It is based on transmitted electrons. It provides details of internal composition (show
morphology, crystallisation, stress or even magnetic domains of the sample). In TEM, picture is
shown on fluorescent screens. It provides 2-D picture of the sample. It uses electromagnetic
lenses to focus the electrons into very thin beams..
What are the characteristics of each microscope 1.compound2.s.pdf
1. What are the characteristics of each microscope
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
What are the characteristics of each microscope
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
1.compound
2.stereo ( dissecting)
3. Phase contrast
4. Scanning (SEM)
5. Transmission (TEM)
Solution
The characteristics of each microscope is as follows:
1.COMPOUND MICROSCOPE
In compound microscope the objective lens forms a real, inverted and magnified image of the
object. The eye piece acts like a magnifying glass and forms a virtual erect and magnified image.
Object is placed outside the principal focus of the objective lens. It consists of two convex lens,
ocular, close to the eye and s3cond objective lens. It also reduces chromatic abberrations.
2. STEREO (DISSECTING)
It is an optical microscope which is designed for low magnification, it uses light reflected from
the surfacevof an object rather than transmitted through it. It forms three dimensional erect
image as the prism under the eye piece reverses the image.
3. PHASE CONTRAST
It is used to examine biological tissues (live microorganisms). It is a type of light microscopy
that increases contrasts of transparent and colourless objects. This is achieved by influencing the
optical path of the light. Thus contrast of light and dark makes the specimen visible to the human
2. eye.
4. SCANNING (SEM).
It is used for producing high resolution images of a sample surface. The images have 3-D
appearance and best used to judge the surface structure of the sample. It produces image using
focused beam of electrons. In SEM, the picture is shown on the monitor.
5.TRANSMISSION (TEM).
It is based on transmitted electrons. It provides details of internal composition (show
morphology, crystallisation, stress or even magnetic domains of the sample). In TEM, picture is
shown on fluorescent screens. It provides 2-D picture of the sample. It uses electromagnetic
lenses to focus the electrons into very thin beams.
