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Why do you have to be carefull when you are focusing the high power lens?
Wiki User
∙ 15y ago
On a microscope, you have to make sure to use the fine focus instead of the coarse focus. If you are not careful and you do use the coarse focus, it will move the barrel down and the lens may crush your slide/slide cover. Which is very, very bad.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoYou should use the fine adjustment knob to focus. You should use that because you don't want to scratch the slide
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What is the lens at the top of a microscope called?
Eyepiece lens.
How does light travel through a carvex lens?
IF you meant a convex lens - light entering the lens is bent because it's passing from one medium to another - to converge at the focal point.
What uses a lens and two mirrors?
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
What is the difference between a simple and compound microscopre?
simple microscope only have 1 lens and compound microscope uses 2 lens \
Before advanced technology scientists used simple materials to build the first microscope Which materials were used?
a magaified lens
When focusing a specimen you should always start with which objective?
Ocular Lens (eyepiece) or Stage
What is the lens that is used to find the specimen on a microscope?
You use the low power lens to find the specimen with a microscope. Once you have found the specimen on low power, you can switch to high power for greater magnification. Just be sure to use only the fine adjustment knobs for focusing on high power so the high power objective won't hit the slide.
Why do slides break on high power?
The high-power objective lens rests very close to the slide so adjustments such as focusing (which moves the lens up and down) could potentially push the lens right through the slide. It's usually advisable to take your eyes off the eyepieces and actually get to an angle that allows you to watch the space between the lens and slide when changing to the high power to avoid breaking the slide if the lens is already too low.
What is the BEST procedure for focusing a compound light microscope?
Begin by using the lowest power objective lens and then switching to the next highest power lens.
Why must you be careful when you are focusing with a high power lens?
When you are focusing the high power objective lens, you might damage the lens if you adjust it too closely and/or damage the object/specimen you are observing. To avoid this, look to the side of the microscope when adjusting the coarse knob to make sure the high power objective lens isn't too close.:)
What is the power of the high power lens?
scanning-40x low-100x high-400x
What is the name of the adjustment knob that moves the body tube for focusing with the high-power objective lens?
I assume you would use the fine adjustment knob for high power objectives.
What is a high power objective in a microscope?
The high power objective in a microscope is the largest lens in the microscope.
Why is it advisible to start with the low power lens when viewing a slide?
It is easier to start with low power lenses because it makes it easier to find the object that you are focusing on and object looks clear . It is not easy to focus with high magnification .
What are the dangers of using the coarse-adjustment knob when focusing under high power?
It is possible to cause damage to the microscope or lenses when using the coarse focus- such as pushing the lens through the glass slide.
Why must you always use the low power lens when you are first focusing on a specimen?
It is supposed to help you center on the specimen.
When using a compound light microscope and focusing should the lowest power lens should be used?
yes it should.
