Without an atmosphere, the sky visible from Earth would appear black. This is because the scattering of sunlight by atmospheric gases, which causes the blue color of the sky, would not occur in the absence of an atmosphere.
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The light with the shortest wavelength is violet. Violet light has the shortest wavelength among the visible spectrum, ranging approximately from 380 to 450 nanometers, making it the shortest wavelength visible color.
The red color in the sky at sunrise and sunset is caused by scattering. As the sun is low on the horizon, sunlight passes through more of the Earth’s atmosphere. Shorter wavelengths (blue and violet) scatter out, leaving the longer ...
Convex mirrors are used in automobiles to see the rear side traffic. They provide a wider field of view compared to plane mirrors, allowing drivers to see more area behind them. The convex shape makes objects appear smaller but covers ...
The power of the lens with a focal length of 25 cm will be +4D. The power of a lens in diopters (D) is calculated as the reciprocal of the focal length in meters, so a focal length of 25 ...