PBS
People and Discoveries: Lee De Forest
A biography on audion inventor, Lee de Forest, from childhood on. Hyperlinks to additional information about the radio and broadcasting.
Rice University
Galileo Project: Evangelista Torricelli
The Galileo Project fact sheet profiles the life and work of Evangelista Torricelli (1608-1647), the Italian scientist and inventor.
Massachusetts Institute of Technology
Mit: Invention of the Week: Lee De Forest
This website provides information on the life and inventions of Lee DeForest, the man who invented the audion tube, which made commercial radio broadcasting practical.
National Academy of Engineering
Greatest Achievements: Computers
Computers are one of the top 20 engineering innovations of the 20th century. Read the history behind this great invention.
Houghton Mifflin Harcourt
Harcourt: Biographies: Gail Borden, Jr. 1801 1874
Good resource for biographical information on Gail Borden who was a teacher, soldier, surveyor, tax collector, missionary, but most of all an inventor. Best known for his invention of condensed milk.
Energy for Sustainable Development
Esd Bulgaria: Kids & Energy: Energy Pioneers: Lee De Forest
A profile of Lee de Forest who lived from 1873 to 1961. He was one of the most important inventors of radio and electronic technology, whose inventions touch everyday life.
University of Houston
University of Houston: Engines of Our Ingenuity: Fleming's Electric Valve
Provides background information on the Edison Effect and then discusses Fleming's invention.
Hunkins Experiments
The Secret Life of Machines
An entertaining site that communicates ideas through cartoon drawings. Discover how simple machines and gadgets operate, such as fax machines and washing machines.
University of California
University of California Berkeley: Blaise Pascal
This site from the University of California, Berkeley provides a biography on the life of Blaise Pascal, including extensive information on his accomplishments.
Wikimedia
Wikipedia: Lee De Forest
This Wikipedia encyclopedia article on Lee de Forest discusses his life and his invention of the triode (or audion), which laid the foundation for radio.
PBS
Outline of the History of the Transistor: Lee De Forest
Part of a larger site about the history of the transistor, this brief biography of Lee de Forest, the inventor of the audion, includes a QuickTime movie that shows how it worked.
Other
Steve Spangler Science: Egg in the Bottle Trick
This resource provides information and demonstrates the egg in the bottle trick.
Sophia Learning
Sophia: Bill Nye Demonstration: Candle in a Bottle
Watch and learn with Bill Nye the Science Guy as he demonstrates this classic candle experiment. [0:57]
Other
National Physical Laboratory: The History of Length Measurement
This resource provides historic information on length measurement in the United Kingdom. Click on the topics on the left toolbar of the article to find out more information.
A&E Television
History.com: 6 Inventions That Transformed Housework
Electric appliances large and small promised reduced drudgery. Most people take washers and refrigerators for granted today, a century ago, these machines revolutionized people's daily lives. The introduction of running water and...
University of Maryland
University of Maryland: Boiling Water by Pumping
A page from the University of Maryland Physics Lecture Demonstration Facility. Provides directions for a teacher demonstration which utilizes a Bell jar and vacuum pump to show the dependency of boiling point upon pressure. Shows...
Hunkins Experiments
Hunkin's Experiments: Get an Egg In/out of a Bottle
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. An easy-to-do example includes using air pressure...
PBS
Pbs Teachers: Egg in a Bottle
Examine how differences in air pressure affect objects with this classroom experiment.
NASA
Nasa: Testing a New Spacecraft Material
This is a site from NASA that provides an activity where "You have invented a new material to use for the fuel tanks on the spacecraft. But before you send your new material into the harsh environment of space, you must test it on Earth...
PE Central
Pe Central: Pe Lesson Ideas: Twelve Days of Winter Break
At this website, find exercises for each of the "Twelve days of winter break." Stay fit during the holidays and work these simple exercises into your daily routine.
Science Struck
Science Struck: Ground State vs. Excited State of an Atom
Explains what Bohr's model of the atom is, the characteristics of the ground and excited states of an atom, and the electron configuration for each in the example of Phosphorus.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Lab Work: Come Fly With Me
This site by the Illinois Institute of Technology lets students use a vacuum cleaner hose, ping pong balls, straws and other materials to investigate the effect of moving air upon the surfaces which it hits. Principles are applied as...
Other
Uppsala Astronomical Observatory: Planetary Imaging
Images of Mercury, Venus, the Moon, Mars, and Jupiter by the Swedish Vacuum Solar Telescope.
Curated OER
Time Magazine: Maid to Order
Picture and description of Roomba, a robot that vacuums your house. Roomba's technology and inventors come from MIT's Artificial Intelligence Lab. A great site for exploring the uses of modern robotics!
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