Because radiations emitted by radioactive elements decompose the components of the emulsion (AgBr).
The verb form of "exposure" is "expose." It means to reveal, uncover, or make something visible to others.
The word expose as a somewhat negative connotation, implying a non consensual exposure, one against the person's will. It implies vulnerability, which is negative.
They are in organelles. Chloroplasts are in cells expose to light
Erosion
An "open flame" refers to flame, usually used as a heating source, that is directly exposed to the outside elements, or often the object to be heated. Examples would include a Bunsen burner, a bonfire, or in some cases grills. The opposite would include heating elements that do not directly openly expose the flame, such as old stoves or heating elements.
Henri Becquerel observed that uranium salts emitted radiation that could expose photographic film wrapped in thick paper. This led him to question whether the radiation was related to the element's atomic structure or another property of uranium.
Radioactivity was discovered by Henri Becquerel in 1896 when he observed that uranium salts emitted rays that could expose photographic plates. Marie and Pierre Curie further studied these rays and discovered the elements polonium and radium, leading to the development of the field of radioactivity. This discovery revolutionized science, leading to advancements in both nuclear physics and medical treatments.
Henri Becquerel discovered radioactivity in 1896 while conducting experiments with uranium salts. He accidentally found that photographic plates wrapped in black paper near a sample of uranium salts became fogged, indicating the emission of radiation from the uranium. This unexpected discovery led to further research and the development of the concept of radioactivity.
Becquerel discovered radioactivity by accident while studying a mineral containing uranium. he observed that with exposure to sunlight the mineral gave off a penetrating energy that exposed the film. while one day he tried the experiment one day the day was cloudy so he put it away in a dark desk drawer and at the next day he found the picture of the mineral and later found out that the mineral did not need sunlight to expose radiation so he gave it to two young researchers that eventually isolated the two elements named polonium and radium
Becquerel discovered radioactivity by accident while studying a mineral containing uranium. he observed that with exposure to sunlight the mineral gave off a penetrating energy that exposed the film. while one day he tried the experiment one day the day was cloudy so he put it away in a dark desk drawer and at the next day he found the picture of the mineral and later found out that the mineral did not need sunlight to expose radiation so he gave it to two young researchers that eventually isolated the two elements named polonium and radium
Becquerel was conducting experiments with phosphorescent minerals. Expose them to sunlight and they glow for a while. He placed these materials on photographic plates which had heavy paper on them to stop the sunlight from penetrating and exposing the plates. He prepares some photographic plates and it was overcast for several days and he could not do the experiment. He placed the plates in a desk drawer the first day and after several days of bad weather, decided to develop the plates anyway. They had been exposed. He looked in the drawer and it contained some ore samples containing uranium. The radioactive decay of the uranium had penetrated the paper coverings and had exposed the plates.
The first photographic process which was taken by Joseph Neipce took approximately 8 hours. However the daguerrotype, which was created by Louis Daguerre, was a new photographic process available to the public took approximately 30 minutes.
Dim red light will not expose black and white photographic film. Color film must be handled in total darkness.
Becquerel exposed uranium crystals to sunlight in his initial experiment to test a theory that suggested minerals could emit energy without an external source. He wanted to explore whether uranium spontaneously emitted energy, which later led to the discovery of radioactivity.
To intentionally accelerate the rusting process of steel, you can expose the steel to moisture and oxygen, such as by spraying it with saltwater or placing it in a humid environment. You can also speed up the process by scratching the surface of the steel to expose more of it to the elements.
Radioactive nuclides can expose the photographic film through the light-proof paper, leaving visible traces of radiation on the film. This can result in fogging or discoloration of the film, affecting the quality of the images captured. It is important to store photographic film away from sources of radiation to prevent unwanted exposures.
Expose is a verb.