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The eye accommodates for close vision by tightening the ciliary muscles, allowing the lens to become more rounded. The opposite is true for distance vision.

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Turning which knob moves the objective lenses the greatest vertical distance?

Turning the fine adjustment knob moves the objective lenses the smallest vertical distance with precision, while turning the coarse adjustment knob moves the lenses the greatest vertical distance quickly.


Is it possible to change clear lenses to transitional lenses?

No, clear lenses cannot be changed to transition lenses. Transition lenses have a special treatment that reacts to UV light to darken in sunlight, which cannot be added to regular clear lenses. You would need to purchase new transition lenses to have this feature.


How do you change lenses for Easton Diamond Interchangeable Sunglasses?

To change lenses on Easton Diamond Interchangeable Sunglasses, first, hold the frame firmly with one hand. Then, gently push the lens from the back with the other hand until it pops out. To insert a new lens, align it with the frame's grooves and press firmly until it snaps into place.


What is nose-piece in microscope?

The nosepiece on a microscope is the rotating mechanism that holds multiple objective lenses. By rotating the nosepiece, different objective lenses can be selected and brought into position to change the magnification level of the microscope.


Is body tube and draw tube in a microscope are the same?

No, in a microscope, the body tube is the upper part that holds the eyepiece and connects it to the objective lenses, while the draw tube is the part that allows for adjusting the distance between the eyepiece and the objective lenses to focus the specimen.

Related Questions

Can your lenses be cut to fit smaller frames?

your lenses can be cut to fit to smaller frames but the pupil distance of the lens will be changed. if your eyes are sensitive to change in pupil distance, you will experience dizziness and headache after you cut to fit your lenses. therefore, it is more advisable to get new lenses.hope this helps :)


How is magnification controlled in microscopes?

Magnification in microscopes is controlled by adjusting the focal length of the lenses. By changing the distance between the lenses or using lenses with different focal lengths, the magnification level can be adjusted. Additionally, some microscopes have different objective lenses with varying magnification powers that can be switched out to change the overall magnification.


Why are lenses useful?

If you are talking about lenses glasses. They help people see long distance or short


How Can you change your eye colour?

Colored contact lenses will do the trick.


How far apart are the two lenses of a refracting telescope?

The distance between the two lenses of a refracting telescope depends on its design and purpose. Typically, the lenses are separated by a distance equal to the sum of their focal lengths. This separation allows the lenses to work together to focus light and form an image.


What do you call three lens glasses?

Lenses with three zones: distance, intermediate and near, are known as trifocal lenses.


What do microscopes use to change the appearance of an object?

Microscopes use lenses to change the appearance of an object. By adjusting the lenses, the microscope can magnify or reduce the size of the object and bring it into focus for clear viewing.


How can contact lenses be considered cosmetic?

Contact lenses can be considered as cosmetic if they are used to change your eye color. Lenses can be purchase to change your eyes to a different color from your own. It is also possible to purchase lenses that may your eyes look strange for events such as halloween.


What do the telescope do?

They take objects that are at a distance and magnify them using mirrors and/or lenses.


What do telescops do?

They take objects that are at a distance and magnify them using mirrors and/or lenses.


How does working distance on a microscope change when you go from low to high power?

The working distance decreases as you increase magnification from low to high power on a microscope. This is because higher magnification lenses are closer to the specimen, requiring a shorter working distance for the lens to focus properly.


Turning which knob moves the objective lenses the greatest vertical distance?

Turning the fine adjustment knob moves the objective lenses the smallest vertical distance with precision, while turning the coarse adjustment knob moves the lenses the greatest vertical distance quickly.