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This document discusses different types of microscopes and insect pollination. It defines magnification and resolving power as key properties of microscopes. Magnification increases the size of the retinal image, while resolving power is the ability to distinguish between closely placed points which depends on numerical aperture. There are two main types of microscopes - light microscopes which use light as the illumination source, and electron microscopes which use an electron beam. Compound microscopes have two lenses while insect pollination involves pollen transfer from anthers to stigmas by insects visiting flowers attracted to petals and scent.
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Presentation1.pptx
Compound microscopes consist of more than one lens and have higher magnification and resolving power than simple microscopes. Magnification represents the ability of a microscope to enlarge the retinal image of an object, while resolving power depends on the wavelength of light and numerical aperture of the objective lens.
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This document provides information about microscopes and their types. It defines a microscope as a piece of laboratory equipment used to magnify small objects that are too small to be seen by the naked eye. It then describes two main types of microscopes in more detail - light microscopes and electron microscopes. For light microscopes, it provides their definition, explanation of how they work using lenses to magnify objects, and a diagram of their principle. For electron microscopes, it gives their discovery date, explanation of how they use electrons rather than light to magnify at much higher resolutions, and a diagram of their working parts and process.
MICROSCOPE-Study of Microscope,types.pptx
A small presentation on microscope for MBBS students.
Study of microscope
Types of microscope
Magnification
Resolving Power
Precautions
Microscopy - Magnification, Resolving power, Principles, Types and Applications
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Histological tools
This document discusses various histological tools used to study tissues at the microscopic level. It describes light microscopes, which use visible light and magnification to examine thin tissue slices stained with histological dyes. Electron microscopes are also covered, using electron beams instead of light for higher resolution imaging of cell structures. Specific techniques covered include fluorescence microscopy using fluorescent dyes, polarizing microscopy examining birefringence, and transmission electron microscopy producing 2D images of cell organelles. The history and development of microscopy from early simple microscopes to modern compound and electron microscopes is summarized.
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This document provides information about different types of microscopes. It discusses simple microscopes, which use a single lens for magnification, and their basic parts and working principle. Compound microscopes are then introduced as using multiple lenses to achieve higher magnification than is possible with a simple lens alone. The key parts of a compound microscope are described, including the eyepiece, objective lenses, body tube, arm, and focus adjustments. It explains that light from the illuminator passes through these parts to produce a magnified image for viewing.
Methods in the Study of Cells
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Presentation1.pptx
Compound microscopes consist of more than one lens and have higher magnification and resolving power than simple microscopes. Magnification represents the ability of a microscope to enlarge the retinal image of an object, while resolving power depends on the wavelength of light and numerical aperture of the objective lens.
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MICROSCOPE-Study of Microscope,types.pptx
A small presentation on microscope for MBBS students.
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Types of microscope
Magnification
Resolving Power
Precautions
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Histo tool.pptx
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Microscopy is used to observe microorganisms that are too small to be seen with the naked eye. There are two main types of microscopes - light microscopes, which use lenses and visible light, and electron microscopes, which use a beam of electrons. Light microscopes can be brightfield, using visible light against a bright background, or darkfield. Brightfield microscopy is commonly used to observe stained specimens and count microbes. The resolution of light microscopes is limited by the wavelength of visible light used. Higher resolutions can be achieved using oil immersion lenses, which match the refractive index of the microscope slide and oil to improve image quality at magnifications over 100x.
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Compare between the two light microscope SolutionFeature1. .pdf
Compare between the two light microscope:
Solution
Feature
1. Similar functional parts : source of light is same - visible light is used by focusing the light
either through lenses or prism on the specimen.
2. Dissimilar functional parts : Compound microscope- has multiple objective lenses with one
eyepiece;
Dissecting Microscope- has single objective lens with two eyepiece lenses
3. Purpose of use : Dissecting microscope: used to perform small dissections under the
microscope and to view live specimen , compound microscope- used to visualise things that are
too small to be seen via the naked eye.
7. Maximum magnification: Compound microscope- up to 1000x ; Dissecting microscope- up to
70x
4. Image dimension : -
5. Image orientation : -
6. Image development: no image development or orientation or dimensions- these are all
properties of electron microscopes
3. Purpose of use : Dissecting microscope: used to perform small dissections under the
microscope and to view live specimen , compound microscope- used to visualise things that are
too small to be seen via the naked eye.
7. Maximum magnification: Compound microscope- up to 1000x ; Dissecting microscope- up to
70x
4. Image dimension : -.
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Flowers have male and female reproductive structures that work together through insect pollination. The petals attract insects to the stamen which contains pollen grains in the anther held by the filament. The pollen is deposited on the stigma of the carpel containing the ovary and ovules, with the style connecting the stigma to the ovary allowing the pollen tube to grow and fertilize the female gametes.
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Microscopy is used to observe microorganisms that are too small to be seen with the naked eye. There are two main types of microscopes - light microscopes, which use lenses and visible light, and electron microscopes, which use a beam of electrons. Light microscopes can be brightfield, using visible light against a bright background, or darkfield. Brightfield microscopy is commonly used to observe stained specimens and count microbes. The resolution of light microscopes is limited by the wavelength of visible light used. Higher resolutions can be achieved using oil immersion lenses, which match the refractive index of the microscope slide and oil to improve image quality at magnifications over 100x.
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This document provides an introduction to the course "Zoo 457" about biological techniques. It defines biological techniques as methods used to study living things, including experiments, computations, and tools. It then discusses microscopy, noting that a microscope is used to examine small objects and microscopy is the science of investigating small objects using a microscope. It explains the principles of microscopy, including how light is used to create magnified virtual images through objective and oculus lenses. Resolution in microscopy is defined as the minimum distance between two points on a specimen that can be seen as separate entities, which depends on factors like the numerical aperture and wavelength of light used.
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Microscope
Microscopy is used to study microorganisms that are too small to be seen with the naked eye. Bacteria are typically 2-5 μm in size, below the resolution of the human eye, so microscopy is needed. There are different types of microscopes that provide magnification and resolution, including brightfield, darkfield, phase contrast, fluorescent, and electron microscopes. Each type has a specific working principle and applications - for example, phase contrast microscopy can be used to study microbial motility while living cells are visible. Microscopy allows rapid identification and detection of organisms in patient specimens and provides diagnostic information in microbiology.
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Compare between the two light microscope:
Solution
Feature
1. Similar functional parts : source of light is same - visible light is used by focusing the light
either through lenses or prism on the specimen.
2. Dissimilar functional parts : Compound microscope- has multiple objective lenses with one
eyepiece;
Dissecting Microscope- has single objective lens with two eyepiece lenses
3. Purpose of use : Dissecting microscope: used to perform small dissections under the
microscope and to view live specimen , compound microscope- used to visualise things that are
too small to be seen via the naked eye.
7. Maximum magnification: Compound microscope- up to 1000x ; Dissecting microscope- up to
70x
4. Image dimension : -
5. Image orientation : -
6. Image development: no image development or orientation or dimensions- these are all
properties of electron microscopes
3. Purpose of use : Dissecting microscope: used to perform small dissections under the
microscope and to view live specimen , compound microscope- used to visualise things that are
too small to be seen via the naked eye.
7. Maximum magnification: Compound microscope- up to 1000x ; Dissecting microscope- up to
70x
4. Image dimension : -.
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- The basic level is the cell, which is the smallest unit considered living. Cells make up tissues, organs, and organ systems.
- Organisms are composed of either a single cell (unicellular) or multiple organ systems (multicellular).
- Populations consist of groups of the same species living in an area. Multiple interacting populations form a community.
- Communities within a geographic region along with abiotic factors constitute an ecosystem or biome. All biomes together encompass the biosphere, the highest level of biological organization.
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Microscope ppt
An instrument used to magnify objects that are hard to see or invisible to the naked eye. Optical microscopes consist of a lens or combination of lenses while electron microscopes use beams of electrons. Common types of microscopes include simple microscopes using one lens, compound microscopes with at least two lenses, electron microscopes using electron beams, phase-contrast microscopes utilizing light differences, and interference microscopes creating two superimposed images.
Microscope
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The_Microscope.ppt
The document discusses the history and importance of microscopes in biology. It describes how early scientists like Leeuwenhoek and Hooke discovered the microscopic world and cells using early microscopes. The compound light microscope allows higher magnification and resolution than simple microscopes. The key parts of a microscope, like the objective lenses, ocular, stage, and light source are explained. The document also outlines the cell theory developed by Schleiden, Schwann, and Virchow stating that all living things are composed of cells, cells come from pre-existing cells, and cells are the basic functional units of life.
Microscope PPT.pdf
This document provides information about different types of microscopes. It begins by discussing light microscopes and their basic functions like magnification and resolution. It then describes several types of light microscopes - brightfield, darkfield, phase contrast, and fluorescence - and how they produce different image contrasts. The document also discusses lenses, working distance, and factors that influence resolution. Newer microscopy techniques like confocal and scanning probe microscopy that provide extremely high resolution images are also introduced.
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إضغ بين إيديكم من أقوى الملازم التي صممتها
ملزمة تشريح الجهاز الهيكلي (نظري 3)
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تتميز هذهِ الملزمة بعِدة مُميزات :
1- مُترجمة ترجمة تُناسب جميع المستويات
2- تحتوي على 78 رسم توضيحي لكل كلمة موجودة بالملزمة (لكل كلمة !!!!)
#فهم_ماكو_درخ
3- دقة الكتابة والصور عالية جداً جداً جداً
4- هُنالك بعض المعلومات تم توضيحها بشكل تفصيلي جداً (تُعتبر لدى الطالب أو الطالبة بإنها معلومات مُبهمة ومع ذلك تم توضيح هذهِ المعلومات المُبهمة بشكل تفصيلي جداً
5- الملزمة تشرح نفسها ب نفسها بس تكلك تعال اقراني
6- تحتوي الملزمة في اول سلايد على خارطة تتضمن جميع تفرُعات معلومات الجهاز الهيكلي المذكورة في هذهِ الملزمة
واخيراً هذهِ الملزمة حلالٌ عليكم وإتمنى منكم إن تدعولي بالخير والصحة والعافية فقط
كل التوفيق زملائي وزميلاتي ، زميلكم محمد الذهبي 💊💊
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- 1. MICROSCOPE • Two properties: 1. Magnification: the ability of the microscope to increase the size of the image of an object formed on the retina of the eye. 2. It can be represented as: MP =Size of retinal image formed with the microscope ( size of image) Size of retinal image formed with unaided normal eye (size of specimen) ________________________________________
- 2. TGES BIOLOGY IBDP Resolving power • The ability of a microscope or any magnifying instrument to separate or distinguish between two closely placed points. • This depends on the wave length and the light gathering capacity of the objective lens- numerical aperture.
- 3. Light microscope: The source of illumination is light. Electron microscope: The source of illumination is electron beam.
- 4. Compound microscope Compound microscope is a combination of two simple microscopes. Compound microscope has two lenses.
- 6. Insect pollination Petal – colourful, scented. Attracts insects to the flower
- 7. Insect pollination Anther – contains pollen sacs, in which are the pollen grains (male gametes)
- 8. Insect pollination Filament – holds the anther so that insects will brush against it and collect pollen
- 9. Insect pollination Together, the anther and the filament make up the stamen, the male part of the flower
- 10. Insect pollination Stigma – sticky, collects the pollen from insects visiting the flower.
- 11. Insect pollination Style – the pollen tube grows through this on its way to the ovary
- 12. Insect pollination Ovary – contains the ovules, the female parts of the flower
- 13. Insect pollination Ovule – this will develop into the seed when the egg cell (female gamete) is fertilised
- 14. Insect pollination Together, the stigma, style and ovary make up the carpel, the female reproductive structure in the flower