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It allows you to center the specimen, and if it is set up correctly, then when you switch objectives it should still be there and only need fine focusing. It also reduces the chance of crushing the specimen and/or breaking the slide or the lens as the LPO is further away from the slide than the HPO.
medulla oblongata
1. Use the eyedropper to place a drop of water on the center of a microscope slide2. Use the tweezers to position the letter "e" in the center of the drop.3. Holding the cover slip at a 45 degree angle, lower it slowly over the drop of water. Here's what the letter "e" looks like under low and high power. As you can see, the specimen appears to be upside down and backwards. As you can see, when you switch to high power the field of view DECREASES. Field of view is the amount of the specimen you are able to see. The higher the power, the less you see of the entire specimen. This is why it is always better to begin focusing on the lowest power possible. Beginning on the lowest power gives you the Greatest field of view, which means you will be able to see the entire specimen. For example, you most likely learned the alphabet in preschool, yet it is difficult to tell that the specimen under high power in the picture above is the letter "e".
What do you do when you want to go into a new room and sit down? Do you crawl around the floor until you bump into a chair? No. You stand up an look around the room. You scan the room. When you get close to the chair, you look closer to make sure no one else is sitting in it or to see nothing is resting on the cushion. You use distance vision to find the chair. Then you examine it closely when you are close. Finally you check it to make it will support your weight. Then you sit down. Then you sit down. You start with the lens with the lowest magnification to locate the specimen. You move the specimen into the center of view. etc.
So you can determine the actual size of what you are looking at.
It allows you to center the specimen, and if it is set up correctly, then when you switch objectives it should still be there and only need fine focusing. It also reduces the chance of crushing the specimen and/or breaking the slide or the lens as the LPO is further away from the slide than the HPO.
It is supposed to help you center on the specimen.
Important center of Trade
Because high power takes up a much smaller area, and you may not be able to find the specimen if it's off to one side. C:
Yes. It is one of the important financial center of Europe.
Mecca was an important city for Arabs on the Arabian peninsula, before Islam because it was a worship place for them.
An excellent or like-new specimen (be sure to check for rust inside barrel) would be worth $200-250. A more beat-up specimen would be 100 to maybe 150.
By 1945 Hiroshima had a civilian population of almost 300,000 and was an important military center, containing about 43,000 soldiers.
important points about center of gravity
Babylonian became a important center for trading because they traded the purple snail ink.
The city of Charlotte, North Carolina is an important commercial center to the Carolinas.
a community center is important because help and support is good for the society.