the bouncing back of light of light is called reflection
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To view the peak of a nearby mountain, a pair of binoculars would be an ideal optical device. Binoculars provide magnification and depth perception, allowing for a clearer and more detailed view of distant objects. They are portable and easy to use, making them suitable for outdoor exploration. Additionally, their wide field of view helps in tracking movement or appreciating the landscape surrounding the mountain.
The stereoscopic images in the movie gave viewers a sense of depth and immersion, creating a more realistic and engaging experience.
Changing the objective lenses on a microscope would affect the level of magnification and resolution of the images seen. Higher magnification lenses would allow for a closer view of smaller details, but may reduce the field of view and depth of field. Lower magnification lenses would provide a wider field of view but with less magnification of finer details.
Periscopes allow a submarine, when submerged at a shallow depth, to search visually for nearby targets and threats on the surface of the water and in the air. When not in use, a submarine's periscope retracts into the hull.
Being able to focus on different depths on a microscope allows you to view different layers and structures within a specimen. This is important for obtaining detailed and clear images, especially when examining complex samples. It helps to visualize and understand the three-dimensional structure of the specimen.