# Science 10

I am doing my science 10 by correspondence and I came upon a question that puzzles me. Why are modern light microscopes called Compound microscopes. That and How would I "determine theactual size of the cells shown in the illistration if the field diameter measures 2.2 mm"??? I need help!!!!

Compound microscopes have two lenses, separated from each other. One lens is called the objective and the other is called the eyepice. Magnifying lenses have one lens.

For your second question, estimate or measure the ratio of the diameter of your object, as seen though the eyepiece, to the size of the field of view. Some microsopes have a calibrated scale to help you do this. Multiply that ratio by the field of view diameter (2.2 mm). The field of view may change as you change lenses, so make sure that it really is 2.2 mm. It may be something else.

1. 👍 0
2. 👎 0
3. 👁 162
asked by Mary

## Similar Questions

1. ### math

a box holds 23 puzzles. How many boxes are needed to hold 238 puzzles?

asked by Alice on March 31, 2009
2. ### Math

Marisss completes 4 to 6 jigsaw puzzles a year. Estimate how many years it will take Marissa to complete 20 puzzles.

asked by Anonymous on November 9, 2010
3. ### General

This is a question to everybody: I was just wondering if anyone had any science related questions or things they wonder about that may require experiments. If you have any ideas please mention them. I need this for a science for a

asked by Samantha on September 6, 2012
4. ### Statistics

I have won exactly 72% of the 2400 puzzles that I played. What is the minuimum number of puzzles I must win before I have to win 73% of the total number of puzzles played?

asked by Bob on May 16, 2011
5. ### Algebra

Determine whether each correspondence is a function: 1. Domain: A set of numbers , Correspondence: The area of a triangle , Range: A set of triangles 2. Domain: The set of US senators, Correspondence: The state that a senate

asked by Student on January 29, 2020
1. ### spanish

so i tried doing this one: "¿Te gusta hascer rompecabezas?" "¡No! Hacer rompecabezas no es mi _____ favorita." a. liga b. crucigrama c. diversión d. campeona i know the first part of the question is asking, "Do you like to do

asked by y912f on April 29, 2009
2. ### MTH 213-Elementary Math

(a) Illustrate a one-to-one correspondence between the following sets: N = {1, 2, 3, 4,. . . , n,. . .} F = {4, 9, 14, 19, 24,. . .} (b) In your correspondence, what element of F corresponds to 57? Explain why. (c) In your

asked by Ta on November 30, 2009
3. ### english (gurublue or anyone)

I'm stumped on what seems to be a fairly easy question that has been asked of me after reading about "Mike Rose". I will summarize the story and provide the question that has given me the mental block. Simple story... Mike Rose as

asked by Joey on February 1, 2009
4. ### English

Identify the sentence in each group in which the underlined verb does NOT agree with its subject. A. Everyone in Max’s family like to do jigsaw puzzles. B. One of the puzzles is missing a corner piece. C. Both of Max’s cousins

asked by Diego on September 10, 2019
5. ### math

Brian has been making octagonal wooden puzzles. He wants to make some hexagonal puzzles next. By how much does he needs to increase or decrease the angle measure on his template to make the hexagonal puzzles? A. increase by 15

asked by Cassidy on May 5, 2013

More Similar Questions