Hear from deep space. Pupils learn how satellites transfer information back to Earth. They learn about three different ways to modulate radio waves and how a satellite sends information with only 0s and 1s. Using sound, class members...

Explore the science of space exploration. Pupils consider technological advances in propulsion, communication, power, navigation, and imaging. They select one of these areas and create a timeline of historical progress that contributed...

A guided activity for students to compare incandescent and CFL light bulbs observing the production of heat and light.

A very simple electrical resistance thermometer is described that can be built, calibrated and tested in a school laboratory at virtually no cost. With it, flames, focused sunlight and other high temperature sources can be probed. The...

A brief biography of African-American inventor, Lewis Latimer. Read about his association with both Hiram Maxim and Thomas Edison in developing the incandescent light bulb. This is a transcript of an accompanying radio broadcast.

Meet the inventor of the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb, Thomas Edison.

Edison's genius was improving on others' technologies and making them more practical for the general public. Thomas Edison applied for his first patent in 1868, when he was just 21 years old. The famous inventor's first brainchild was...