Film Optical Density Is a Number That Represents a Comparison

question 9

Multiple Choice

Film optical density is a number that represents a comparison of:

• A) light entering an area on the film
• B) light leaving an area on the film
• C) the amount of energy needed to create the film image
• D) A and B

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Definitions:

Seed-producing Plants

Plants that reproduce through the formation of seeds, encompassing gymnosperms and angiosperms.

Mesozoic Era

A geologic era that occurred from about 252 to 66 million years ago, known for the dominance of dinosaurs and the appearance of flowering plants.

Devonian Period

An era known as the "Age of Fishes," characterized by significant evolutionary advancements in fish and the appearance of early amphibians, occurring from approximately 419 to 359 million years ago.

Gnetophytes

A phylum of gymnosperm plants with unique features distinguishing them from other gymnosperms.