The Telephone

Phones Many inventors believe that voices and sounds are made through wires and they are all directed at it, but only one person finally understood it. The first person who accomplished this eternal success is Alexander Graham Bell, an American inventor born in Scotland for hearing impaired in Boston, Massachusetts. Bell was born in Edinburgh, Scotland on March 3, 1847 and teaches at Edinburgh and the London college. He moved to Canada in 1870 and moved to the United States in 1871.

Unlike many new inventions, the phone was quickly adopted. Just a year later, the first telephone exchange office was built in Connecticut and a Bell phone was set up. Thanks to the rapid telephone communication, Alexander Graham Bell soon became a very wealthy person. It is made of dual electromagnets, and the membrane stretches in front of it like the epidermis of the drum. Place an iron stick in the center of the film. There is a funnel shaped mouthpiece similar to the one used in the old gramophone. When speaking with this horn, it causes a series of vibrations in the film, which is transmitted to the iron to generate oscillating current. Then these are passed through the wire

Bell's telephone transmitter (microphone) consists of a double electromagnet with a film extending on the ring on the front and a rectangular soft iron bar in the center. The funnel shaped mouthpiece points the sound to the film, and when it vibrates, the soft iron "armature" induces the current corresponding to the electromagnet coil. After passing through the wires, these currents pass through a receiver consisting of an electromagnet in a tubular metal closed at one end by a thin, soft iron disk circular. When a varying current passes through the coil of the electromagnet, the disk vibrates, thereby generating acoustic waves in the air.

If you can not find electricity like telegraphy, you can not call. The telephone was discovered by Alexander Graham Bell in 1876 and is ahead of telegraph. The vibration of the diaphragm encodes the change of the sound wave into the change of the radio wave and transmits it. The electromagnet is used to transmit these vibrations through the cable and the other end of the cable is received by another diaphragm. This is the first few years, so the phone is private only (call the fire department, the doctor ...). Then the central exchange system was established and the rich began to touch. The phone soon became a necessary condition for unification and further development of the country

Essay.com/ Science of engineering applications. Speaking of the law of electromagnetic induction, telephone, cement development, steel development

Application of science in engineering Speaking of the law of electromagnetic induction, telephone, cement development, and steel development