Biology

Biology, 01.07.2019 06:40, shaheedbrown06

Which objective lens should always be clicked into place first when you begin using a compound microscope?

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Biology, 16.07.2019 10:40, dudedude1593

Can someone reword this for me plsss < 333333 transmission electron microscope - the transmission electron microscope uses electrons instead of light. a light microscope is limited by the wavelength of light. tems use electrons as "light source" and their much lower wavelength makes it possible to get a resolution a thousand times better than with a light microscope. the possibility for high magnifications has made the tem a valuable tool in both medical, biological and materials research.compound light microscope - microscope with more than one lens and its own light source. there are ocular lenses in the bonicular eyepieces and objective lenses in a rotating nosepiece closer to the specimen. to ascertain the power of magnification of a compund light microscope, it's needed to take the power of the objective lens and multiply it by the eyepiece which is generally 10x. although sometimes found as monocular with one ocular lens, the compound binocular microscope is more commonly used today. the first light microscope dates back to 1595, when zacharias jansen created a compound microscope that used collapsing tubes and produced magnifications up to 9x.

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Physics, 22.08.2019 18:20, enriquecastillo1196

The eyepiece of a compound microscope has a focal length of 2.70 cm , and the objective lens has f = 0.750 cm . if an object is placed 0.810 cm from the objective lens, calculate the distance between the lenses when the microscope is adjusted for a relaxed eye. calculate the total magnification.

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Biology, 27.08.2019 18:00, ann6083

Question 5 (4 points) which is a correct statement regarding microscope use? you should always begin with the lowest power objective lens. this highest power objective lens is generally the shortest one. you should always start with the highest power objective lens. once you center under low power, you will not recenter again.

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Biology, 22.10.2019 03:00, michelle5642b

What is the best procedure for focusing a compound light microscope? a) use a visual inspection of the object to determine which objective lens to use first. b) begin to focus using the highest power objective lens in order to detect small objects. c) begin to focus using the highest power objective lens and switch to other lenses as necessary. d) begin by using the lowest power objective lens and then switching to the next highest power lens.

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