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This animation demonstrates the mechanism and operation of record players.
record player, Hi-Fi record player, speaker, amplifier, record, vinyl record, LP, single, tone arm, turntable, cartridge, needle, groove, listening to music, music, technology
Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.
Cinemas were built in large numbers in big cities of the US in the 1910s.
DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.
A dynamo converts mechanical energy into direct current.
Mechanical bell that functions by means of an electromagnet.
Electric current can be generated by rotating an armature loop in a magnetic field.
The invention of the ballpoint pen made writing a lot easier.
This animation demonstrates the structure and operation of hair dryers.
In loudspeakers sound waves are generated by electromagnetic induction.
This animation demonstrates how mobile phones work.
This animation demonstrates how radios work.
This animation demonstrates how a washing machine works.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
A transformer is a device used for converting the voltage of electric current.