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Can the laser change on the stage?

Can the laser change on the stage? Have you ever seen a laser music show? Accompanied by the bass music, beautiful colorful laser images appeared...

Lasers Properties

 Lasers Properties Lasers are not ordinary light; it is produced by the atoms of the matter when stimulated radiation is generated. So the behavior...

What is a laser?

What is a laser? We are not new to ‘the laser’ word. The CD that we listen to is called the laserdisc. The VCD that...

Red light – a warning of danger

Red light - a warning of danger Cars that meet a red light must stop. When repairing roads, at night, the repair places must turn...

Gasoline falling on the wet street

Gasoline falling on the wet street After the rain, the asphalt streets were wet in the sunlight, often seen here and there with colorful oil...

Do tube lights emit multicolored light?

Do tube lights emit multicolored light? The sunset is just falling; the flower lights come on. The brightly colored tube lights combine all kinds of...

Why does a rainbow appear in the sky?

During the summer days, it suddenly stopped after the rain, and the sunlight was beautiful. Suddenly, a rainbow appeared in the sky. It is...

Why is the width of the tri-colored pieces on the French flag, not the same?

Why is the width of the tri-colored pieces on the French flag, not the same? Have you seen the flag of France yet? It is...

Why can we see distant objects using a telescope?

Why can we see distant objects using a telescope? A telescope is an optical device used to observe objects at a long distance. It can...

Why can electron microscopy magnify objects by a million times?

Why can electron microscopy magnify objects by a million times? Put a flea under the magnifying glass, then move the magnifying glass to the right...

Why can a magnifying glass enlarge an object image?

Why can a magnifying glass enlarge an object image? A magnifying glass is a simple optical tool used to read a book, and the small...

Why are the dark sea blue and the seafoam white?

Why are the dark sea blue and the seafoam white? Sitting on the beach, watching the vast deep blue sea, rolled up thousands of waves,...
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What is color television?

The human eye sees an object and can see its colors because the light it emits, or light from its surface, bounces off, enters...

What is an audio CD?

Edison's phonograph underwent constant innovation to become a popular electric phonograph. It is made up of the motor, the turntable, the receiver, and the...

What is the principle of the fire detector?

Fire harms human lives and property, damages the ecological environment. Fire prevention is a matter of concern to all humans. If it is possible...

What is the principle of the theft alarm?

In important places such as money, gold, silver, underground record storage, etc., if a fraudster suddenly sneaks in. the burglar alarm will immediately sound...