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Question of the Day: TOEIC
Science tells us that all objects are made visible to us by means of light; and that white light, by which we see things in what may be called their normal aspect, is composed of all the colors of the solar spectrum, as may be seen in a rainbow; a phenomenon caused, as everybody knows, by the sun's rays being split up into their component parts.
This light travels in straight lines and, striking objects before us, is reflected in all directions. Some of these rays passing through a point situated behind the lenses of the eye, strike the retina. The multiplication of these rays on the retina produces a picture of whatever is before the eye, such as can be seen on the ground glass at the back of a photographer's camera, or on the table of a camera obscura, both of which instruments are constructed roughly on the same principle as the human eye.
These rays of light when reflected from an object, and again when passing through the atmosphere, undergo certain modifications. Should the object be a red one, the yellow, green, and blue rays, all, in fact, except the red rays, are absorbed by the object, while the red is allowed to escape. These red rays striking the retina produce certain effects which convey to our consciousness the sensation of red, and we say "That is a red object."
-From The Practice & Science of Drawing by Harold Speed (1913)
Which of the following is a detail from that passage about white light?
It is composed of all of the colors of the spectrum
It is the multiplication of rays
It lets us see things in their abnormal aspects
None of these
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