157 questions and answers in this section

Natural Sciences » Physics

Explain why does the horizon always seem to recede when we move forward?

Explain why does the horizon always seem to recede when we move forward?

When you walk towards the horizon, your brain interprets the lines of perspective as converging in the distance. This phenomenon of convergence illusion creates the...

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Explain why does ice stick to our tongue in winter?

Explain why does ice stick to our tongue in winter?

Winter ice has interesting physical characteristics, primarily due to its very low temperature. When water freezes, its molecules slow down significantly and arrange themselves into...

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Explain why solar flares can cause radio interference?

Explain why solar flares can cause radio interference?

Solar flares are sudden and violent explosions on the surface of the Sun. They occur when the magnetic energy accumulated in the solar atmosphere is...

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Explain why some people are able to hear ultrasonic sounds that are inaudible to most people.

Explain why some people are able to hear ultrasonic sounds that are inaudible to most people.

Every individual is born with a different hearing sensitivity, just as some naturally have sharper vision. The secret mainly lies in the sensory cells located...

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Explain why visible light is such a small part of the electromagnetic spectrum.

Explain why visible light is such a small part of the electromagnetic spectrum.

The electromagnetic spectrum represents all possible radiations, ranging from very long radio waves to highly energetic gamma rays. Within it, visible light is minuscule—just a...

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Explain why do headlights use Fresnel lenses?

Explain why do headlights use Fresnel lenses?

A Fresnel lens is based on a simple optical principle: it concentrates light using a structure cut into thin concentric rings. Instead of using a...

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Explain why the most massive stars become black holes?

Explain why the most massive stars become black holes?

A star is like a permanent tug-of-war: on one side, you have gravity constantly trying to compress it towards its center, and on the other, nuclear pressure,...

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Explain why light travels slower in water than in air?

Explain why light travels slower in water than in air?

The speed at which light travels directly depends on the refractive index of the medium it passes through. This index, essentially, is like a number...

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Explain why are some sounds intolerable to human ears?

Explain why are some sounds intolerable to human ears?

In response to certain very unpleasant sounds, the body initially reacts with a contraction reflex of the middle ear muscles, particularly to try to suffer...

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Explain why some mirrors produce a distorted image?

Explain why some mirrors produce a distorted image?

The way a mirror distorts an image essentially depends on its shape and its curvature. A normal mirror, the one you use every day, is...

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