optical axis passing through centeres of cornea,lens to retina.visual axis is line passing through fixation point to fovea.
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The optical axis is an imaginary line that passes through the center of a lens or mirror, while the visual axis is the line connecting the fovea (center of the retina) to the object being viewed. The optical axis is used in optics to describe the path of light through a lens system, while the visual axis describes the line of sight in relation to the eye.
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope..
The difference between the rotation and revoulution is that rotation is the spiinning of the planet on its axis and revoulution is the orbiting of the planet around the sun.
No, sunrise is not an optical illusion. It is the result of the Earth rotating on its axis, causing the sun to appear above the horizon as the Earth's location moves into the path of sunlight.
Not sure, but I think it's true
The 2px orbital points along the x-axis, the 2py orbital points along the y-axis. They have the same energy but differ in orientation in space.