In this lesson, students build two circuits and explore how transistors function. When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object . . .

In this lesson, students search for transistor-based devices at school. They use the results of their search to explain the significance of the transistor in their lives. A transistor is a tiny device ...

Bell Laboratories, one of the world’s largest industrial laboratories and now part of Lucent Technologies, was originally the research and development arm of the giant telephone company American ...

Even when caregiving is borne out of love for the elder, the work can be relentless, grueling, and isolating. These debilitating side effects make it all the more important to take time to care for ...

"When God wants to speak with us, he does not avail himself of an angel but of parents." (Martin Luther) Martin Luther was named after St Martin by his parents Hans and Margarette Luther, a pair of ...

HOWARD BAHR: There were some trends in the family between 1924 and 1978 that showed dramatic change. There were others that our data suggests that things are pretty much as they were. Between 1924 and ...

Astrophotography has come a long way in recent years, thanks to digital cameras (which are more light-sensitive than film), digital photo processing (which can bring out the subtle details in dim ...

The Bisque Brothers (Steve, Tom, Daniel, and Matthew) taught themselves astronomy and computer science to develop The Sky, a leading program for exploring the night sky and controlling telescopes. In ...

A program such as Martin Luther involves months of painstaking research, preparation and writing. An experienced and skilled crew including a director, producers, director of photography, audio ...

WILLIAM JULIUS WILSON: During the Great Depression, African Americans were faced with problems that were not unlike those experienced by the most disadvantaged groups in society. The Great Depression ...

Emily Taguchi: How did you become involved in Cambodian silk making? Kikuo Morimoto: It started in 1980. When Cambodians began fleeing to refugee camps on the Thai border, I began volunteering at the ...

QUESTION: In 1893, Frederick Jackson Turner went to Chicago to deliver his famous paper, "The Closing of the American Frontier." What was it all about? Who was Frederick Jackson Turner? JOHN MILTON ...