Refraction is the change in the direction of the wave passing from one medium to another.
The change in the direction of the propagation of any wave is due to the different speed at different points.
A far away object appears closer and a small object appears larger.
Take an example. Suppose, an object lies in water.
A far away object appears closer. The angle from which the rays of light reach the observer is larger than the angle that it makes in air.
This makes the angular size larger to the observer's eye which makes the object look larger relative what it looks in air. Similar but vice versa condition occurs in the case when a small object appears larger.
The first and the Ancient art is prehistoric art that are petroglyphs (cupules), which was appeared throughout the world during the Lower of Paleolithic
Ancient art refers to the many types of the art produced by the advanced cultures of the ancient societies with the some form of the writing, such as those of the ancient of the China, India, teh Mesopotamia, Persia, Palestine, the Egypt, the Greece, and the Rome. Art from the past holds clues to the life in the past. By looking at the a work of the art's symbolism, colors, and the materials, that we can learn about the culture that produced it. For example, the two portraits above are all the full of the symbolism referring to the virtues of an ideal marriage during the fifteenth of the century.
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Answer:
b: a new formulation of paints
Explanation:
