White light is produced in a tube by heating a filament. The filament, typically made of tungsten, is heated to a high temperature by passing an electric current through it. This causes the filament to emit light across the visible ...
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The reason for the elliptical appearance of the Sun and the Moon near the horizon is refraction. When these celestial bodies are close to the horizon, their light passes through a thicker layer of the Earth’s atmosphere, causing their image ...
Fiber optic used in communication works only on the principle of total internal reflection of light. This principle allows light to propagate through the fiber by continuously reflecting off the fiber’s walls, ensuring minimal signal loss over long distances.
A telescope is used to observe distant objects. It gathers and magnifies light from far-away celestial bodies such as stars, planets, and galaxies, enabling astronomers and enthusiasts to study them in detail.
In biology laboratories, compound microscopes are used to see magnified images of microscopic cells or organisms. These microscopes use multiple lenses to magnify tiny objects, allowing scientists to observe details not visible to the naked eye and study biological structures ...