MICROSCOPE PARTS AND FUNCTIONS
The microscope is a tool used to magnify objects such as cells and make them easier to see.
Each part of the microscope has a function. Use page 828 in your text book to find the parts and functions of each part of the microscope.
Answer the Questions Below
Read the section below these questions called “More Microscope Information” and “So you can’t see your image” and “which way did it go?” to answer the following questions
More Microscope Information
You will be using a compound microscope. When using a compound microscope you will be looking through two lenses. As you read in your biology text book the magnification of the eye piece of 10x. A typical magnification for the low power (also known as the scanning objective) is 10x. What do you think the total magnification of the image is when looking through the microscope? Is it 10x? 20x or 100x? If you choose 100x you were correct. Therefore, to find the total magnification you multiply the magnification of the eye piece times the magnification of the objective you are using. If you have an objective with a magnification of 15x and an eye piece with a magnification of 10x then the total magnification is 150x.
So You Can’t See Your Image
Next piece of useful information, if you find it difficult to get your slide in focus try the following: check to make sure the object is “clicked in”, check to make sure the diaphragm is “clicked” in, check to make sure you have the right amount of light coming in by checking the diaphragm, check to make sure the slide underneath the objective, move the objective to low power and move the coarse adjustment to get it in focus and check to make sure the microscope is plugged in. If you have checked all of the above then ask for help from a lab partner or the teacher.
“Which way did it go?”
The image you see under the microscope will appear upside down and backwards. You will see an example of this when you view the letter “e” under the microscope. Therefore, when you move the image to the right you will see it move left and when you move the image to the left you will see it move to the right. When you move the image up you will see it move down.
Did you ever want to get credit for playing “tic tac toe” during class, well now is your chance. Get a small piece of paper and draw a “tic tac toe” grid. Each person will need a different color of pen (it is easier to see this way). Play the game by looking in the microscope. When you are done draw out the grid as you see it underneath the microscope and then draw it out how you see it on the paper as it is positioned on the slide. Explain how the two images are similar and how they are different and give a reason why. Have Fun !! J