DC Motor
Who invented the DC motor
William Sturgeon
Who invented the Alternating Current?
Nikola Tesla
When was the Barkhausen Effect invented and who invented it?
It was invented in 1919 by a German Scientist by the name of Heinrich Barkhausen.
when was the microwave invented?
It was invented on October 8th 1945
When was it invented?
It was invented in 1918.
What is one way the the DC is still used today?
Conveyor belts, printing press, pumps, fans, and robotic systems.
What year was the AC invented?
1883
What are the key componets to the device?
Iron core
wire coil
amplifier
magnet
speaker
who invented the microwave?
Percy Spencer and Robert Hall.
Who invented it?
It was invented by Alfred Lee Loomis.
Where can you find them?
They are in fans
How many sibilings did Nikola Tesla have?
He had four
What is it?
The Barkhausen effect is a series of sudden changes in the size and orientation of ferromagnetic domains.
How was the microwave invented?
While Percy Spencer was testing a new magnetron, he found that the heat had melted a chocolate bar in his pocket.
How is it used today?
It mesures the speed of bullets in flight.
How is it created?
It is created using a permanent magnet and an electromagnet.
What can AC be used for?
-Fans
-TV
-Air Conditioners
-Motors
-Radios
how does it work?
Barkhausen did so by connecting a wire coil surrounding an iron core to an amplifier, then bringing a magnet close to the coil. Any signal picked up by the amplifier was sent to a speaker, which enabled Barkhausen to hear a progression of clicking noises whenever he moved the magnet.
How does it heat food?
Radiation
What is it also called?
ballistic chronograph
How much can they run?
They can run from one to 20,000 RPM
Who did Nikola Tesla compete against?
He competed against Thomas Edison in Proving his Current was better.
how old was Heinrich Barkhausen when he got the worlds first chair in his disipline?
He was 29 years old.
What does a microwave do to food?
It heats it up, but it can also make the food lose nutrients.
What is it?
A camera used to measure the precise velocity of a bullet while in flight.