I learnt in physics today that light has to enter our eye for us to see!
how do we see things?...There must be a light source that strikes or shines on the object and reflects and to reach your eyes..,
The exact word for something that makes vision possible is "light". Without light, there would be nothing to see.
Light enters the eye through the cornea, a clear covering over the front of the eye. In low light conditions, the pupil dilates to allow more light to enter the eye. Additionally, the retina contains specialized cells called rods which can detect light even in low lighting, contributing to night vision.
To see something in fine detail, you should focus light on the fovea, which is located in the center of the retina. The fovea contains a high concentration of cone cells, which are responsible for sharp, detailed vision and color perception.
The basic requirement for you to see an object using the microscope is light. The amount of light will determine the visibility of the specimen.
It must enter our eyes.
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 .
Sapphire doesn't create or produce light. If you can see it, then it must be reflecting light from something else.
Sapphire doesn't create or produce light. If you can see it, then it must be reflecting light from something else.
because light used to see an object must have a wavelength
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
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 to "see" something with eyes, the object must be longer than the light wave refracted from it. Molecules are too small to be refracted.
You only "see" when light enters your eyes. In the dark, there is no light . . . the main reason why we call it "dark". Since there is no light, none can enter your eyes, and you do not see.
By definition, the word "visible" means something you can see. Beware: you cannot see a light ray or beam or photon as it whizzes past you. You only see those rays that enter your eye. In a dusty atmosphere you might say you can see a light beam, but what you see is that part which is scattered into your eyes.
-- 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'.
laura