What does EXPOSURE mean?

noun

1. vulnerability to the elements; to the action of heat or cold or wind or rain“exposure to the weather”
2. the act of subjecting someone to an influencing experience“she denounced the exposure of children to pornography”
3. the disclosure of something secret“they feared exposure of their campaign plans”
4. aspect resulting from the direction a building or window faces“the studio had a northern exposure”
5. the state of being vulnerable or exposed“his vulnerability to litigation”
6. the intensity of light falling on a photographic film or plate“he used the wrong exposure”
7. a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material
8. the act of exposing film to light