magnification on a microscope? Answer: The shortest lens is the scanning objective; you use it to locate the object on the slide. The medium-length lens is the low-power objective. The longest lens is the high-power objective. Multiplying the power of the eyepiece lens and the nose piece lens gives you the total number of times an object will magnified. (4 points) Score 2. Explain how to focus a microscope using the high power lens. Include any safety issues you need to be aware of.
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There are 3 main parts of the microscope such as illuminating parts‚ magnifying parts and mechanical parts. The sub-parts in illuminating parts are electric lamp and iris diaphragm while the sub-parts of magnifying parts are eyepiece and objective lens. The mechanical parts consist of most sub-parts among these three such as barrel‚ arm‚ stage‚ coarse focus knob‚ fine focus knob and base. Figure 1 : Fully Assembled Optical Microscope. Illuminating
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1. This question is about lasers. (a) With reference to the light waves emitted by a laser‚ state what is meant by the terms (i) monochromatic. ........................................................................................................................... ........................................................................................................................... (1) (ii) coherent. ...............................................................................
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the following orientations of the letter would the viewer see? b p q d Question 6 of 25 Which of the following procedures should be done just prior to adjusting the diopter‚ when using the compound microscope? Clean all lenses with lens paper Turn the light on Adjust the iris diaphragm Adjust the fine focus Question 7 of 25 Two parts of the microscope that regulate the amount of light visible through the ocular are the: fine and coarse adjustment knobs ocular and
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distance of its images‚ di ‚ and the focal length‚ f‚ of a spherical mirror. In symbols: + = LENSES One of the most useful and simplest optical devices we have. Types of Lenses: a. Concave Lens – The rays are diverged by the lens‚ thus calling it a diverging lens b. Convex Lens – are designed so that parallel rays cross
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And that determines what kind of lens the optometrist will work with. What are the eye conditions? If seeing: * Light rays Light rays Retina Retina Retina Retina Light rays Light rays Focal point Focal point Far blurry objects (near-sightedness) use spherical corrective lenses with negative power. EYE EYE (Near-sightedness) correction (Near-sightedness) correction Negative spherical lens Negative spherical lens Focal
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Microscope | | 1. | Use various internet resources to write the term that matches each meaning below:Used as a handle to carry microscope = | | 2. | Lenses attached to the nosepiece | | 3. | Concentrates light on the object | | 4. | Lens you look through | | 5. | Platform on which slides are placed | | 6. | Rotates to change objectives | | 7. | The shortest objective | | 8. | The longest objective | | 9. | Control knob used for sharp focus | | 10. | Control
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Microscopy and the Metric System Margaret E. Vorndam‚ M.S. Version 42-0090-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports
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false. If true‚ write a “T” on the answer line. If false‚ write a word or phrase in the blank to make the statement true. F | 1) The microscope lens may be cleaned with any soft tissue. | F | 2) The coarse adjustment knob maybe used in focusing with all objective lenses. | T | 3) When beginning to focus‚ the lowest power lens should be used. | T | 4) Resolution decreases as the amount wavelength of light increases. | F | 5) When focusing always focus toward
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resulting in an image that your naked eye would ordinarily see if looking at the slide. The image is then magnified by the lower (objective) lens. The objective lens flips the image and magnifies it by bending the light. The light is bent as it passes through the convex surface on either side of the lens material. The eyepiece acts as a weaker version of the objective lens by flipping the image again and magnifying it further. Compound microscopes are used most commonly to
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