Early photography required a long exposure time and the developing process was laborious. Handling of silver powder was also risky. However, early photography was such an important feat. Portraits were famous subjects of photography. Pictures of landscapes and everyday life were also common.
I do not know his goals but I know several accomplishments. He painted the Mona Lisa, he created an alarm clock that yanked your feet up to wake you up, he invented bicycles, and he created a metal lion to please the king.
Answer:
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
Explanation:
