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AC, DC and Transformers
Power loss affects electricity supply, especially to homes far from power stations. Why is power lost, and how is electricity effectively transported over long distances? Physics - Electricity And Circuits - Learning Points. Direct...
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Making an Electromagnet
We create a simple electromagnet by coiling wire around a nail and passing current through it. The magnetic field around the electromagnet creates similar patterns in iron fillings to a permanent magnet. Physics - Electricity And...
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Diodes and Transistors
How these simple semiconductor devices allow us to control the strength and flow of electrical current in a circuit, and are integral components in modern electrical equipment. Physics - Electricity And Circuits - Learning Points....
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First Ladies
The role of the First Lady of the United States has changed over the years. These women have shaped the White House as well as the nation.
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Mapp v. Ohio: Illegal Search and Seizure
Mapp v. Ohio was a landmark U.S. Supreme Court case that safeguarded the Fourth Amendment right to privacy after a Cleveland woman was wrongly convicted following an illegal search of her home.
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Korematsu v. United States: Was Internment Legal?
Korematsu v. United States was a controversial U.S. Supreme Court decision made in the aftermath of the attack on Pearl Harbor. It established that the U.S. government could intern Japanese Americans during WWII as a result of Executive...
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What is Veterans Day?
Veterans Day takes place every year on November 11 to honor the bravery and sacrifice of all those men and women who fought and died for their country, during war and peacetime.
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What is Patriot Day?
Patriot Day takes place every year on September 11 to honor and remember the first responders, and those who lost their lives, on 9/11.
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What is Martin Luther King Jr. Day?
MLK Day takes place every year on the third Monday of January. It's a time to celebrate the life and work of Civil Rights leader Martin Luther King Jr., who brought Americans together in the name of racial equality.
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Gerald Ford: The Unelected President
Gerald Ford holds a unique place in the history of U.S. politics – as the only American to hold the office of Vice President and President without ever winning a national election. Who was he, and what was his presidency like?
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Rule of Law
U.S. Citizens are required to follow the rule of law, a practice that was tested by former president Richard Nixon.
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Puppy Diplomacy and the Cold War
In 1961, a gift from Soviet Premier Nikita Khrushchev to President John F. Kennedy, the adorable pooch Pushinka, brought the men closer together. Did puppy diplomacy prevent an all out nuclear war?
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First Pets of the White House
A succession of presidents and their families have kept animals at the White House, some more unusual than others, including sheep, a raccoon, a snake, and of course, cats and dogs.
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Amanda Gorman
The youngest inaugural poet in history, Amanda Gorman introduced a new generation to the lyrical power of poetry and became a modern-day icon in the process.
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The Teapot Dome Scandal, Untold
The Teapot Dome Scandal in the 1920s stunned the American public by exposing the large-scale greed of some US politicians, and empowered Congress to launch investigations - reaffirming that no one is above the law.
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Yarrow Mamout: From Slavery to Financier
African Muslim Yarrow Mamout rose from a life of slavery to become a popular businessman in Washington, D.C. Artist Charles Willson Peale painted his portrait and discovered his incredible story.
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The Showdown: MacArthur v. Truman
History is packed with epic rivalries, but when U.S. President Harry S. Truman went up against Five Star General Douglas MacArthur during the Korean War – there was only going to be one winner.
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The Burning of Washington
During the War of 1812, British forces stormed into Washington, D.C. and set fire to the White House and other federal buildings. Rather than dent U.S. morale, the sacking of Washington served to galvanize the population against the...
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Charles Curtis: Native American Vice President, Untold
In 1929, Charles Curtis – a member of the Kaw Nation – made history by becoming the first Vice President of color in the U.S. Yet he left behind a complicated legacy that some claim had a lasting negative impact on Native Americans.
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America’s Soldiers
We find Miss Palomine standing on the mall in Washington, DC. She talks about all the monuments built to those who have made our country great. She then talks about the amazing monument honoring our soldiers. This leads to a discussion...
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The Reverend Martin Luther King, Jr.
Miss Palomine visits the Lincoln Memorial in Washington, DC and points out the plaque honoring the Reverend Martin Luther King, Jr. She talks about the ideals that these two great men had in common and mentions Dr. King’s “I Have A...
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¿Cómo funciona un motor eléctrico? - Motor de CD Explicado
En este vídeo vemos cómo funciona un motor de CD para entender el principio básico de funcionamiento de un motor de CD. Consideramos la corriente convencional, el flujo de electrones, el bobinado, la armadura, el rotor, el eje, el...
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Conceptos Básicos del Generador Eléctrico de CA
Aprenda el funcionamiento básico de un generador eléctrico, aprenda cómo se utilizan los imanes para generar electricidad en una bobina de alambre. Luego cubrimos la electricidad trifásica trifásica y brevemente la configuración en...
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AC Electrical Generator Basics - How electricity is generated
Electrical generator basics. Learn the basic operation of an electrical generator, learn how magnets are used to generate electricity in a coil of wire. We then cover 3 phase three phase electricity and briefly the star configuration in...