The iris diaphragm is named after the iris, the colored part of the eye, because of its similar appearance and function. Just like the iris controls the amount of light entering the eye, the iris diaphragm in a camera lens controls the amount of light entering the camera.
The cornea, lens, and iris work together to focus light onto the retina at the back of the eye. The cornea and lens help to bend and refract light, while the iris controls the amount of light entering the eye.
The iris on a microscope controls the amount of light entering the microscope objective lens. By adjusting the iris, you can regulate the brightness and clarity of the specimen being observed.
There is so little light in the night sky that you must open the aperture on your camera
The microscope's diaphragm controls the amount of light entering the microscope, which helps to adjust the contrast and brightness of the specimen being viewed. By adjusting the diaphragm, you can improve the clarity and visibility of the image.
Iris controls the amount of light entering into the eye.
The iris is the structure in a vertebrate eye that controls the amount of light entering the eye. It contains muscles that adjust the size of the pupil to regulate the amount of light that reaches the retina.
The diaphragm controls the amount of light entering the microscope. It is usually located beneath the stage of the microscope and can be adjusted to regulate the intensity of light passing through the specimen. By opening or closing the diaphragm, you can control the amount of light that reaches the specimen, which can help improve image quality and clarity.
The iris!
The circular opening of the eye that controls the amount of light entering is called the pupil. It dilates in low light to allow more light to enter and constricts in bright light to reduce the amount of light entering the eye.
The biconcave structure is the "lens, but his focuses the light, it does not adjust for the amount of light. The structure that adjusts for the amount of light entering the eye is the "iris"
The iris controls the size of the pupil. Which in turn, controls the amount of light entering the eye.
The pupil controls the amount of light entering the eye by adjusting its size. In bright light, the pupil constricts to allow less light in, and in dim light, it dilates to allow more light in. This helps to regulate the amount of light reaching the retina for optimal vision.
The diaphragm is a circular disk that adjusts the amount of light entering the stage area.
It has different sized holes and is used to vary the intensity and size of the cone of light that is projected into the slide
The pupil of the eye can be likened to a camera aperture. Just as an aperture controls the amount of light entering a camera, the pupil regulates the amount of light entering the eye.
Light enters the eye through the cornea, which is the clear outer layer that acts as a protective barrier. The cornea then helps focus the light before it passes through the pupil, the opening in the center of the iris that controls the amount of light entering the eye.