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Which focusing knob do you use with the 10x and the 40x objective of a microscope?
When using the 10x objective of a microscope, you can typically use the coarse focus knob for initial focusing, as it provides a wider field of view and greater depth of field. However, with the 40x objective, it is advisable to use the fine focus knob to achieve precise focus, as the increased magnification narrows the depth of field and requires more careful adjustments. Using the coarse knob at high magnification can also risk damaging the slide or objective lens.
What objective do you always bring a specimen into focus using the?
When bringing a specimen into focus using a microscope, you typically start with the lower power objective, such as the 4x or 10x objective. This allows for a wider field of view and makes it easier to locate the specimen. Once the specimen is in clear focus with the lower power, you can then switch to higher power objectives for detailed examination. This method helps prevent damage to the slide and ensures a more efficient focusing process.
How many millimeters is the sun from the earth?
The sun is not millimeters. It is a G-type star, on the Main Sequence, in mid-life. For its spectral classification, its size is average, with a diameter of about 1,390,000,000,000 millimeters
What is the precise length and width of a biology book in millimeters using a ruler?
155 mm
Why should you always begin to use a microscope with a lower power objective?
You should always begin using a microscope with a lower power objective to locate and focus on your specimen more easily. Low power objectives provide a wider field of view, making it simpler to find the area of interest. Additionally, starting with lower magnification minimizes the risk of crashing the objective lens into the slide, which can damage both the slide and the microscope. Once the specimen is in focus, you can then switch to a higher power objective for detailed observation.
What is To use a ruler to measure the field of view of a microscope called?
This process is called calculating the field of view diameter on a microscope. It involves measuring the diameter of the field of view using a ruler and knowing the magnification of the objective lens to determine the actual size of objects viewed under the microscope.
Why is it important to calculate the diameter of the field when first using the microscope?
Calculating the diameter of the field helps determine the field of view under the specific objective lens magnification you are using. This information is crucial for accurate measurements and observing the size, orientation, and movement of objects on the microscope slide. It also helps in understanding the scale of the objects being viewed.
How would you estimate the size of object viewed under high power objective lens 40 times if you were given the size of the field diameter when using low power objective lens 4 times?
You can estimate the size of the object by comparing the field diameters observed under the low power objective lens (4x) and high power objective lens (40x). Calculate the ratio of the field diameters (40x/4x = 10), and use this ratio to estimate the size of the object viewed under the high power objective lens. Simply multiply the size of the object viewed under the low power objective lens by the ratio (field diameter at 4x) to get an estimation.
What is the area of a circle if the diameter is 35mm?
Using 3.14 as Pi the area of circle is: 961.625
How do you calculate a microscopes field of view?
Since the field of view is a circle, the size of the field of view is it's area. You would need to find the diameter of the field of view, using a transparent ruler or a micrometer. Divide the diameter measurement by 2 to get the radius. Then use the formula for the area of a circle, Area = πr2. For example, you measure the diameter of the field of view to be 2.14mm. Divide 2.14mm by 2 to get the radius, and you get 1.07mm. Square 1.07mm, which is 1.14mm2. Multiply x 3.14 (pi), and you get 3.58mm2. So the field of view for this example would be 3.58mm2.The field of view differs with different magnifications. The lower the magnification, the larger the field of view.
When using a 10X ocular and a 15X objective and the field size is 1.5 mm the approximate field size with a 30X objective is what mm?
0.75 mm way to get this answer........... (diameter of field A X total magnification of field A) / total magnification of field B so start by finding the diameter of field A= which is the 1.5 next figure out what the total magnification of field A is= 150 (you get this answer by multiplying the ocular # which is 10x by the objective # which is 15x. (10 x 15= 150) next figure out what the total magnification of field B is =300 (you get this answer by multiplying the ocular # which is 10x by the other higher objective # which is 30x. (10 x 30 = 300) then you can use the formula and plug in all the answers you got to get the answer (1.5mm x 150)/300=.75mm
Will an object 1594 angstroms in diameter be visible with the light microscope using the 100X objective?
No, an object with a diameter of 1594 angstroms will not be visible with a light microscope using a 100X objective. The resolution limit of a light microscope is around 200 nanometers, which is much larger than the size of the object.
What is the circumference of a 1p coin?
The circumference of a 1p coin (one pence coin) is approximately 2.2 centimeters (22 millimeters). This measurement is based on the coin's diameter, which is about 1.9 centimeters (19 millimeters). The circumference can be calculated using the formula ( C = \pi \times d ), where ( d ) is the diameter.
One cent is equal to how many square feet?
You need to measure the diameter of the cent. Then divide the diameter in half to get the radius. The formula for area of a circle = ?r2, where ? is 3.14159. I think you would be better off using millimeters or centimeters instead of ft.
What is the circumference of a five-peso coin?
The circumference of a five-peso coin, which is used in the Philippines, can be determined using its diameter. The five-peso coin has a diameter of approximately 25 millimeters. To calculate the circumference, you can use the formula ( C = \pi \times d ), which gives a circumference of about 78.5 millimeters (or approximately 7.85 centimeters).
What is the volume of a dime?
The volume of a dime is approximately 0.36 cubic centimeters (cm³). This is based on its dimensions, which are about 1.35 millimeters thick and 17.91 millimeters in diameter. The volume can be calculated using the formula for the volume of a cylinder, considering the dime's shape.
What is the area of a circle with a diameter of 56 millimeters rounded to the nearest hundredth?
Using 3.14 as Pi the area of circle is: 2461.76
