The amount of time the light-sensitive surface is exposed to light is determined by the __________

In the Middle Ages every musical document had to be

a. printed in Italy or the Frankish empire. b. written by the nobility. c. approved by Pope Gregory. d. written by hand.

The invention developed in 1837 that used a copper plate coated with silver iodide is known as a ______.

heliograph Rationale: Heliograph used a special pewter plate placed in a camera obscura. Daguerreotype used a copper plate covered in silver iodide. calotype Rationale: Calotype is a print process used in photography. Daguerreotype used a copper plate covered in silver iodide. daguerreotype negative Rationale: A negative reverses light and dark values on a reproducable photograph. Daguerreotype used a copper plate covered in silver iodide.