BBC
Bbc: Earth: Tardigrades Return From the Dead
Tardigrades are ancient, fascinating creatures that can survive conditions that would kill most life forms, including extreme heat and absolute zero, extreme pressure and a vacuum, and deadly radiation. They can even survive being...
TeachEngineering
Teach Engineering: Automatic Floor Cleaner Computer Program Challenge
Students learn more about assistive devices, specifically biomedical engineering applied to computer engineering concepts, with an engineering challenge to create an automatic floor cleaner computer program. Following the steps of the...
History of Computing Science
History of Computing Science: Eniac
The ENIAC (Electrical Numerical Integrator and Computer)was a large computer based on vacuum tubes and introduced in 1946. This lecture gives a brief presentation of the ENIAC.
PBS
Pbs: Transistorized!
This site provides a tour of the discovery and development of the transistor form PBS, including video and lesson plans.
Other
Lee De Forest, American Inventor: The Complete Lee De Forest
An extensive site covering all aspects of Lee de Forest, his inventions, writings, and personal life. Find drawings and pictures of his audion tube and find out about his legacy, especially in the world of electronics.
Science Struck
Science Struck: What Is Gravity and How Does It Work
A very detailed look at gravitational force and the many theories that have been put forward to try to explain it. Includes lots of illustrations.
PBS
Pbs Learning Media: How Big Is the Universe?
In this media-rich essay from the NOVA Web site, astronomer Brent Tully of the University of Hawaii walks you through the latest scientific theories about the size of the universe.
TED Talks
Ted: Ted Ed: How Heavy Is Air?
Too often we think of air as empty space- but compared to a vacuum, air is actually pretty heavy. Dan Quinn describes the fundamentals of air pressure and explains how it affects our bodies, the weather, and the universe at large. [3:19]
Symmetry Magazine
Symmetry Magazine: Explain It in 60 Seconds: Cherenkov Light
Cherenkov light is explained here as the light emitted when a charged particle travels through matter faster than light would be able to. This would be slower, however, than the maximum speed of light, which occurs in a vacuum. "Explain...
PBS
Pbs Teachers: Mysteries of the Universe
Consider the issues surrounding the world of space exploration including the new fields of archaeoastronomy and astrobiology. Investigate zero gravity, the Big Bang theory, life in space and how sound travels in a vacuum.
National High Magnetic Field Laboratory
Magnet Academy: Walter Brattain (1902 1987)
Walter Houser Brattain discovered the photo-effect that occurs at the free surface of a semiconductor and was co-creator of the point-contact transistor, which paved the way for the more advanced types of transistors that eventually...
Exploratorium
Exploratorium: Science Snacks: Falling Feather
Recreate Galileo famous demonstration to show that a heavy and light weighted object fall at the same acceleration in a vacuum.
National Pest Managment Association
Pest World for Kids: Sort the Bugs
A fast-paced game where you must eliminate the insects by sorting three types of bugs into jars, hitting flies with a fly swatter, picking ticks up with tweezers, or vacuuming up stink bugs.
Other
Sri: Erma and Micr, the Origin of Electronic Banking
Discusses the history of electronic banking, banking problems, vacuum tubes vs. transistors, magnetic ink character reading, handling paper at high speed, and the ERMA.
Council for Economic Education
Econ Ed Link: Tapped Dry: How Do You Solve a Water Shortage?
Economists do not operate in a vacuum. If an economist is going to suggest that the price of a good needs to be increased, he or she needs to consider who will bear the increase in costs. Will the costs be distributed equally or will one...
Carnegie Endowment for International Peace
Carnegie Endowment for International Peace: Lebanon, Path of Democracy [Pdf]
After the withdrawal of Syrian troops, Lebanon is faced with rebuilding its political structure. Unfortunately the nature of political parties in Lebanon could lead to a power vacuum. This Carnegie paper was written in 2006.
BBC
Bbc: Gcse Bitesize: Why Do Scientists Think That Light and Sound Are Waves?
Light travels as transverse waves and can travel through a vacuum. Sound travels as longitudinal waves and needs to travel through a solid, liquid or gas. Read about the properties of light and of sound, and learn the differences between...
Alabama Learning Exchange
Alex: Automotive Brakes Power Assist Units
This lesson will orient the student to the operation of vacuum operated and hydraulically assisted power booster units. The student will be able to effectively diagnose and repair problems with these systems at the conclusion of the lesson.
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.
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