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The iris opens and closes its aperture or "hole" to let in the correct amount of light.

Mechanical irises were used for a long, long time in pre-digital film camers.

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What structure regulates the amount of light that goes into the eye by controlling the size of the pupil?

The iris, which is the colored part of the eye, regulates the amount of light that goes into the eye by controlling the size of the pupil. The muscles in the iris can expand or contract the pupil in response to changes in light intensity.


The is the colored part of the eye that narrows and widens to control the amount of light entering the eye?

The colored portion that regulates the amount of light in eye is called as iris. The hole through which light passes inside the posterior chamber is called as is called as pupil. The color of the iris changes as per color of the skin pigment. It has got circular muscles and radial muscles in it. In fight or flight responce, it is dilated through sympathetic nerve stimulation. In relaxed and stress free envirinment pupil is constricted via parasympathetic nerve stimulation.


What is the part of the eye that adjusts to let light enter called?

lens, the concave disk held by the ciliary muscles, found behind the opening of the pupil, can't miss it!


Which part of the eye is adjustable in accordance with the light conditions?

The iris is the part of the eye that adjusts in response to light conditions. It controls the size of the pupil, which determines how much light enters the eye. In bright light, the iris contracts to make the pupil smaller, and in dim light, it dilates to make the pupil larger.


Part of the microscope that is used to increase the amount of light passing through the specimen?

The condenser is the part of the microscope that is used to increase the amount of light passing through the specimen. It focuses light onto the specimen to improve image quality and enhance visibility. Adjusting the condenser can help optimize the lighting for different types of samples.

Related Questions

What structure regulates the amount of light that goes into the eye by controlling the size of the pupil?

The iris, which is the colored part of the eye, regulates the amount of light that goes into the eye by controlling the size of the pupil. The muscles in the iris can expand or contract the pupil in response to changes in light intensity.


Which part of the microscope controls the amount of light?

The condenser is the part of the microscope that controls the amount of light reaching the specimen. By adjusting the condenser's aperture and height, you can regulate the amount and focus of light used for illumination in the microscope.


What part of the microscope is to be adjusted so that the greatest amount of light will pass through in the stage?

The condenser on a microscope is the part that is adjusted to control the amount of light passing through the stage. By adjusting the condenser, you can increase or decrease the amount of light reaching the specimen on the stage.


What part of microscope regulates the amount of light?

The light diaphragm


What is the name of the dark part of the eye that changes its size to let in light?

The pupil absorbs light.


Is the Wagner 3057KX the correct part number for a signal light?

That is correct for the 2007 Chevy Tahoe LTZ


Which structure of the eye changes the direction of light?

The most imortant part of the eye that changes the direction of light is the LENS, though the cornea does do a little of the inital focusing.


What part of the cell cycle ensures that the new nuclei have the correct amount of DNA?

mitosis


Name the part of the eye which controls the amount of light entering?

The iris!


What part of a microscope controls amount of light?

The diaphragm or iris controls the amount of light that passes through the specimen on a microscope. By adjusting the diaphragm, you can regulate the intensity and focus of the light.


What is the replacement bulb for the trunk light in a 1998 Toyota Avalon?

The correct part # is 9098114009


Do all parts of the earth receive the same amount of light everyday of the year?

No part of the Earth receives the same amount of light every day, but every point on Earth receives the same amount of light in a whole year.