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How does it work? - Loudspeaker

How does it work? - Loudspeaker

In loudspeakers sound waves are generated by electromagnetic induction.

Mājturība un tehnoloģija


runātājs, Trīsjoslu skaļrunis, elektroniska ierīce, skaņas frekvence, vidējā diapazona skaļrunis, liels runātājs, crossover, spole, diafragma, magnēts, pastiprinātājs, vibrācija, Audio, skaņu vilnis, augstfrekvences skaņa, dziļa balss, mono, stereo, pastāvīgais magnēts, piesaiste, atbaidīšana, elektromagnētiskā indukcija, pārnēsājams audio atskaņotājs, tehnika, Fizika

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Electric bell

Mechanical bell that functions by means of an electromagnet.

How does it work? - Record player

This animation demonstrates the mechanism and operation of record players.


Capacitors store electrical energy in the form of electric charge.

Characteristics of sound waves

This animation explains the most important characteristics of waves through sound waves.

DC motor

DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.

Dynamo (intermediate)

A dynamo converts mechanical energy into direct current.

Generating alternating current

Electric current can be generated by rotating an armature loop in a magnetic field.

How does it work? - Electron microscope

This animation demonstrates the structure and operation of electron microscopes.

How does it work? - Hair dryer

This animation demonstrates the structure and operation of hair dryers.

How does it work? - Optical disc drives

This animation demonstrates the structure and operation of different types of optical disc drives.

How does it work? - Radio

This animation demonstrates how radios work.

Lute and hurdy gurdy

The earliest version of the lute appeared in ancient Mesopotamia.

Moon radar experiment (Zoltán Bay, 1946)

In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.


The piano is one of the most popular instruments in the world. It is a chordophone which produces sounds mechanically.

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.

The Doppler effect

It is a well-known phenomenon that the sound of an approaching sound source is higher than that of a receding one.

Torsion balances

A force can be measured by measuring the twisting of the torsion wire in a torsion balance.

Types of waves

Waves play an extremely important role in many areas of our lives.


A transformer is a device used for converting the voltage of electric current.

Voice production

When producing sound, the vocal cords are vibrated by the air flowing out of the lung.

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