Essay about Laboratory Assignment: Virtual Microscopy

Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size, and so they were not seen and described until 1665, when Robert Hooke first looked at dead cells from an oak tree. His contemporary, Anton van Leeuwenhoek, crafted lenses and with the improvements in optical aids, a new world was opened. Magnification and resolving power limit what can be seen. Explain the difference. Magnification is the ratio of an object’s image size to its real size. Resolution is a measure of the clarity of the image; it is the minimum distance two points can be separated and still be distinguished

Alignment of the anatomical part can also affect the image. Shape distortion is when an image appears either longer or shorter based on the way it is positioned in relation to both the central ray and the image receptor; foreshortening is when the object appears shorter than it is in reality, while elongation is when the object appears longer than it truly is. When imaging a part, the long axis is intended to be placed perpendicularly to the central ray and parallel to the image receptor. Distortion happens when either the part or the central ray/image receptor are placed incorrectly. In addition, distortion can also occur due to standard divergence of the beam.

Look at the calibration marks on your ruler to determine the degree of uncertainty and number of significant figures that can be made when measuring with a ruler.

The theme park company is building a scale model of the killer whale stadium main show tank for an investor's presentation. Each dimension will be made 6 times smaller to accommodate the mock-up in the presentation room. How many times smaller than the actual volume is the volume of the mock-up?You can discover the answer by partitioning the old volume by the new volume. So first we locate the new volume of the tank by taking its measurements (it's span) and partitioning it by six.

groups. It was conducted to further the research in choice overload and paralysis of the mind.

1)The field of view in Figure 1-2 is a factor of 100 larger than the field of view in Figure 1-1. What aspects of Figure 1-2 increased by a factor of 100 relative to Figure 1-1? Did the height increase by that amount? The diameter? The area?

C. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide.

# of plaques/(volume plated x reciprocal of the dilution factor of the dilution tube used)

The scale factor for my pre-image to my image was one-point five or one and one-half inch. By having a scale factor of one point five, the pre-image would be enlarged. If the scale factor is greater than 1, then the dilation would be an enlargement. If the scale factor would be less than 1, the dilation would be reduced smaller than the pre-image. If the scale factor would be 1 then there

Due to the absence of secondary sources in the FoV, I choose an alignment method based

1. Make a wet mount (Ex 12) of a small sample of the alfalfa water. Examine at 1000X total magnification using high contrast. This will illustrate how many organisms, both motile and non-motile, are present in the sample.

Procedure: First, set up the microscope. Clean the ocular lenses and objectives with lens paper. Then pace the prepared e slide on the stage and make adjustments. Turn the rotating nosepiece until the 10x objective is above the ring of light coming through the slide. Move the slide using the X and Y stage knobs until the specimen is within the view. Adjust the focus by looking into the eyepiece and focusing the specimen with the coarse then fine focus knobs. Adjust diaphragm until there is sufficient light

Laboratory experience especially in engineering is a key factor to give technical education to the students. In the fast development of IT, virtual laboratory become an option in engineering field. The importance of laboratory experience in engineering education has long been recognized. The fact is, is virtual laboratory a good substitute to replace traditional laboratory or still have some weak point that need to be reconsidered in order to replace it? In this topic, I will discuss about the merit and demerits of the use of virtual laboratory in engineering.

B. Label the diagram of the pocket microscope in Figure 4. Use the following terms: eyepiece,

Most microscopes, including those in schools and laboratories today, are optical microscopes. They use glass lenses to enlarge, or magnify, an image. An optical microscope cannot produce an image of an object smaller than the length of the light wave in use. To see anything smaller than 2,000 angstroms (about 1/250,000 of an inch) a wave of shorter length would