What significance do Leonardo’s technical achievements have?
-scientists have actually built some of them
In the past, literacy was not very high which was why artistic forms such as paintings or pictures, and musical compositions were very much used. Another reason would most likely be how each culture has an ideal view of what beauty is and they usually work around this. This is why some cultures have a shared approach when it comes to art and cultures then can be differentiated based on the type of Art that they used.
Sculpture that has grooves of various depths cut into the surface plane of stone while the surface remains clearly perceptible is sunken-relief sculpture.
Image result for Sculpture that has grooves of various depths cut into the surface plane of stone while the surface remains clearly perceptible is Relief sculpture is a complex art form that combines many features of the two-dimensional pictorial arts and the three-dimensional sculptural arts.
Sunken relief is a technique of relief sculpture in which figures or images are carved in low relief, but set within a sunken area so that the relief never rises beyond the original flat surface. This technique is largely restricted to ancient Egypt where it became common in the Amarna period and later.
Learn more about sunken-relief sculpture here
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