NATS1870 Quiz 1 - Lesson 2 + 3
Although Alhazen correctly viewed light as bouncing off objects in all outward directions, why did he include only the central ray as entering the eye?
although alhazen correctly viewed light as bouncing off objects in all outward directions
why did he include only the central ray as entering the eye
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NATS1870 Quiz 1 - Lesson 2 + 3
Although Alhazen correctly viewed light as bouncing off objects in all outward directions, why did he
include only the central ray as entering the eye?
a. He did not know how the eye could bend other non-central rays, so they too can enter the eye
b. He could not work out the optical geometry properly, to include all other rays bouncing off the object
c. All of the remaining rays were somehow lost in the air
d. Only the central ray would actually enter the eye
a. He did not know how the eye could bend other non-central rays, so they too can enter the eye
Which of these examples corresponds to Alhazen's description of how we come to 'see' external
objects?
a. Intromission: physical forms of objects (thin films of released atoms) enter our eyes.
b. Intromission: light rays bounce of objects, then travel in straight lines to our eyes.
c. Intromission: colours imprinted by objects on transparent media travel layer by layer through this
medium, then to our eyes.
d. Extramission: rays of vision, or light, leave our eyes to hit the external objects, then bounce back to
our eyes.
b. Intromission: light rays bounce of objects, then travel in straight lines to our eyes.
, Anaxagoras and Empedocles were the first ones to correctly suggest that
a. The sun is the daytime sky reflected and focused by the Earth.
b. All matter is made up of tiny, invisible, indivisible atoms.
c. Vision is the union of the fire-element of eyes and visible objects.
d. Darkness is simply the absence of light
d. Darkness is simply the absence of light
What was the role of the 'transparent medium' in Aristotle's theory of vision?
a. Colours of objects traveled through the transparent medium to enter our eyes.
b. The transparent medium itself entered our eyes to give us images of objects.
c. Rays of vision reached out from our eyes to external objects through the transparent medium.
d. Light reflected by objects travelled through the transparent medium to enter our eyes.
a. Colours of objects traveled through the transparent medium to enter our eyes.
Through his work of dying carpets and textiles, Chevreul
a. showed that it is impossible to mix surface colours.
b. designed the first subtractive colour system for surface colours for surface colours.
c. was on a quest to derive the principles of harmony that govern colours presented together.
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