A box camera is a simple type of camera, the most common form being a cardboard or plastic box with a lens in one end and film at the other. They were sold in large numbers during the late 19th and early 20th centuries. The lenses are often single element designs meniscus fixed focus lens, or in better quality box cameras a doublet lens with minimal (if any) possible adjustments to the aperture or shutter speeds. Because of the inability to adjust focus, the small lens aperture and the low sensitivity of the sensitive materials available, these cameras work best in brightly lit day-lit scenes when the subject is within the hyperfocal distance for the lens and of subjects that move little during the exposure. Eventually, box cameras with photographic flash, shutter and aperture adjustment were introduced, allowing indoor photos.
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3) Uses of pin hole camera?
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Answer:
a simple box-shaped hand camera, typically lacking an adjustment for shutter speed.
Which of the following is a true statement about mountains?
Mountains are never found in desert biomes.
Mountains are only found on continents.
Mountains can be formed differently from each other.
Mountains are all formed by volcanic eruption.
Answer:
Mountains can be formed in different ways from one another.
Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
Answer:
Potential energy is higher when it is at the first point because it lacks an appropriate operating force and is being stored. At the fourth point, it possesses a significant running force and kinetic energy. Hence, point 1 has more potential energy than point 4, and vice versa