How Bell turn backed electricity fluctuations to sound?

Upvote:3

The component is called a speaker or a loudspeaker and Alexander Graham Bell was indeed the person who invented this component in 1876. A current goes to a coil which acts like a magnet and depending on the magnitude of the current, it attracts or repels a static magnet that is attached to a piece of paper.

In this way, the oscillations of the electric current are converted to mechanical oscillations of the piece of the paper on the loudspaker (next to the magnet), and oscillations of the paper create oscillations of the air – the sound.

Luboš Motl 2734

📝 What is the origin of Indian weekday names?
📝 How did Swiss neutrality affect WW2?
📝 Why weren't Australian Aborigines enslaved?
📝 How were the British and French armies invited into Belgium in 1914?
📝 How did marrying off one's daughter help secure an alliance, in early medieval Europe?
📝 How did letters become published?
📝 Did they have a word for psychopath in ancient Rome?
📝 Who invented the Airplane?
📝 "Peace, land, and bread!" Or not?
📝 Evolution of the names of slaves
📝 Did active frontiersmen really eat 20,000 calories a day? How does this compare to other highly-active people in recorded history?
📝 Where can I find demographic information for the Roman Empire?
📝 When did druids become widely accepted as 'shapeshifters'?
📝 What was the staple food of the natives of South East Asia before rice?
📝 Could a person get from the outer districts of Vienna into the city center via the sewage system?
📝 What is the origin of the myth of St. Valentine?
📝 How did Magnus IV of Sweden come of age at 15?
📝 Why did Roman women have no praenomen?
📝 Who named San Andreas, California?
📝 How was the Spanish Armada coordinated?
📝 Did herders/horde people get constipation from not eating any vegetables or fiber?
📝 Does Winckler's explanation of Semitic migrations have any merit?
📝 How did early Judaism and Zoroastrianism influence each other, if they were so far apart?
📝 What were the racial views of the Nazis towards the Greeks?
📝 What are the safeguards in the German constitution of 1949 against dictatorship?
📝 How much did Didius Julianus pay to become emperor of Rome?
📝 What's the story behind Christmas?
📝 Who is the person sitting to the left of corporal Hitler?
📝 How dependent were the Germans on horse transport in their invasion of the Soviet Union?
📝 What is a WW1 water detail?

Source: stackoverflow.com

Travel Tips

Search Posts

📝 How Bell turn backed electricity fluctuations to sound?
📝 How did pastoral nomads keep winning battles/wars? When did the tide turn against them for settled societies?
📝 How did the countries devolved from USSR turn from communism to democracy or other ideology peacefully after the collapse?
📝 How do historians and linguists know how to pronounce the names from non-phonetic scripts?
📝 How would a 16-year-old girl from Cleopatra's era curse?
📝 How did people distinguish slaves from free people in Ancient Rome?
📝 How accurate or supported is Jared Diamond's "Guns, Germs, and Steel"?
📝 How much smaller were medieval farm animals in England than today?
📝 How and when did the word "nuclear" replace the word "atomic"?
📝 How did Israel win the Six-Day War?
📝 How did Nazi Germany finance itself during WW2?
📝 How has hearing loss been avoided in war?
📝 How did the general population of England convert so smoothly to Protestantism?
📝 How did the USSR manage to innovate in an environment characterized by government censorship and high bureaucracy?
📝 How did the Romans do division?
📝 How was law enforcement handled in large US cities before professional police?
📝 How would a Spartan have held his shield?
📝 How did 300,000 people survive the 3 1/2 year siege of Sarajevo?
📝 When and how did the USA and the UK become allies?
📝 How did they cook on ancient ships?
📝 How did people wash dishes before dish detergent?
📝 How did pilots know when to release bombs on airplanes during World War2?
📝 How were tanks scrapped after World War Two?
📝 How did the authorities not find the speakeasy clubs during the prohibition?
📝 How did such a relatively minor event as the assassination of an archduke start World War I?
📝 How did German unification affect existing sentences for criminal convicts?
📝 How did the Roman state verify citizenship?
📝 How was Germany able to hold itself together, while Austria-Hungary could not?
📝 When and how did people begin to consider slavery immoral?
📝 How did the Nazis plan to defeat America during World War II?

How Bell turn backed electricity fluctuations to sound?

More post

Search Posts

Related post