first the pupil must expand to let the light in and the image falls on the retina. comes and rod cells absorb the light and transmit a signal to the brain and the brain flips the image right side up again that's what must happen for the eye to see.
In order for a person to see an object, light waves must pass through the cornea, pupil, lens, and finally hit the retina at the back of the eye. The retina then converts the light signals into electrical impulses that are sent to the brain via the optic nerve for processing and interpretation.
In order to "see" something with eyes, the object must be longer than the light wave refracted from it. Molecules are too small to be refracted.
When light falls on some object, then it absorbs all the colors of visible light spectrum except the color of the object itself which it reflects back (diffusion). So we see the color of the object .
It must either reflect light, as in the case of the Moon under ordinary circumstances, or block light, as in the case of the Moon during a solar eclipse. Of course in everyday life, almost everything we see on Earth is seen by reflected light. PS: in reality, every object with a temperature above absolute zero, in other words, every object, emits light in the form of infrared radiation. We just can't see it without instruments or special cameras.
To see a red light as green, you would have to drive at a speed faster than the speed of light, which is not possible according to the laws of physics.
ion know
dey must strike on shiony or polished surfaces
No. In order to see a rainbow in front of you, there must be a source of light behind you, and the rainbow you see will only have the colors of the source in it.
1. there mush be a source of light 2.the light must strike an object 3.the light must be reflected from the object to your eye
because light used to see an object must have a wavelength
In order for a rainbow to happen it needs to rain. Just after you see the rain is gone a rainbow appears for a short moment. A mixture of rain and light creates a rainbow. You could even use a glass with water and sunlight for a rainbow to appear.
First, the sun must be shining. Second, the sun must be behind you, and third, there must be water drops in the air in front of you.
In order for a material to be transparent (see-through), the light energy that impacts the material must be transmitted through the material and "released" on the other side unchanged. In order for this to happen, the molecules of the material must vibrate at the frequency of the light energy in such a way that the energy is not changed into another form - ie. the energy is not absorbed and used to heat the material, nor is the energy reflected off the surface. Opaque materials' molecules keep the energy or reflect it back, but don't pass it through.
In order to "see" something with eyes, the object must be longer than the light wave refracted from it. Molecules are too small to be refracted.
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-- You "see" only when light enters your eye. -- You 'see' an object only when light from that object enters your eye. -- If the object itself doesn't generate light, then light from some other source must illuminate the object, and some of that light must reflect from the object to your eye. -- In absolute darkness, there is no light, and you do not 'see'.
It must enter our eyes.