Telephone (Alexander Graham Bell)

Telephone (Alexander Graham Bell)

The device that transmits human voice as electrical signals was invented by Bell in 1876.

Tehnoloģijas

Atslēgvārdi

telefons, Bells, telefonu komplekts, raidītāja ierīce, uztvērēja vienība, telefona zvans, telefona pieslēgums, telekomunikācijas, patents, Mikrofons, skaņas kvalitāte, tehnoloģija

Saistītie vienumi

Telegraph (Samuel F. B. Morse)

The American inventor presented his invention revolutionising telecommunication at New York University in 1837.

How does it work? - Radio

This animation demonstrates how radios work.

Phonograph and gramophone

Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.

Desktop computer

This animation demonstrates the structure and most important peripherals of desktop computers.

Laptop computer, peripherals

A variety of peripherals can be used with laptop computers.

The development of television sets

Television, invented in the early 20th century, became one of the basic forms of entertainment.

Edison’s light bulb

The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.

How does it work? - Mobile phone

This animation demonstrates how mobile phones work.

How does it work? - LCD screens

A liquid-crystal display utilises the light modulating properties of liquid crystals.

How does it work? - Plasma display television

This animation explains how a plasma display television works.

Added to your cart.