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Your Weight on Other Worlds     Ever wonder what you might weigh on Mars or The Moon? Here's your chance to find out. From Your Weight On Other Worlds http://www.exploratorium.edu/ronh/weight/index.html

Amusement park physics     How do physics laws affect amusement park ride design? Participating in a hypothetical design of the rides. From Exhibits Collection -- Amusement Park Physics http://www.learner.org/exhibits/parkphysics/

Microscapes gallery     Series of images of the world too small for the human eye taken through high power microscopes. At this level of magnification the everyday objects of our lives take on an unrecognizable and sometimes artistic appearance. From Lucent | Innovating Ahead http://www.lucent.com/minds/innovating/microscapes.html

Speed of Sound     Yeager and Ridley's attempt to break the sound barrier and to increase airplane speeds. From Speed of Sound @ nationalgeographic.com http://www.nationalgeographic.com/sound/speed.html

Titanic's lost sister     Interview with explorer Robert Ballard, essay on the possibility of an unsinkable ship, Hot Science exercise 'Camera Overboard', and additional links. From NOVA Online/Titanic's Lost Sister http://www.pbs.org/wgbh/nova/titanic/

NIST Reference on Constants, Units and Uncertainty     Values for certain fundamental physical constants and articles about selected constants. From Fundamental Physical Constants from NIST http://physics.nist.gov/cuu/Constants/index.html

A Century of Physics     Overview of the major events in physics in the twentieth century. From The American Physical Society presents "A Century of Physics http://timeline.aps.org/

Radiation reassessed     New findings from Hiroshima and Chernobyl. The end of the Cold War may have eased the threat of atomic holocaust, but it didn't squelch the controversy about the health effects of ionizing radiation. From Radiation: how harmful? http://whyfiles.org/020radiation/

Robot invasion     Robots on Mars. And here on Earth. On July 4th, 1997, the spacecraft called Mars Pathfinder parachuted and bounced onto the Martian surface. From Robot vehicles http://whyfiles.org/044robot/

Einstein: still right     Amazingly enough, as the century closes scientists are still gathering evidence that the revolutionary physicist Albert Einstein got it right when he developed relativity theory early in this century. From Everything's relative http://whyfiles.org/052einstein/

From Reactor to Refrigerator     Irradiation - blasting food with gamma rays - may sound unpalatable, but it's considered safe by about 40 nations and a long list of professional associations. It's safe, but is it desirable? From Fresh from the reactor http://whyfiles.org/054irradfood/

It's about time     Do you assume time tomorrow will be just like time today? Sorry to break the news: It's not a safe time to take time for granted. Also atomic clocks, and brief timeline of timekeeping methods. From Timely tidbits http://whyfiles.org/078time/

Ultimate umbrella     Missile Defense. Congress wants one, but will physics allow it? Star Wars - the missile defense - was never built, despite the expenditure of $100 billion for research and development. From Star Wars -- The missile defense http://whyfiles.org/089missile/

Skateboard science     Dedicated to the science of skateboarding - Frontside forces and fakie flight. From Skateboard Science http://www.exploratorium.com/skateboarding/index.html

Science of Baseball     Physics behind baseball by seeing what makes a home run, finding out whether you can hit a 90-mph fast ball and participating in other activities. From Science of Baseball http://www.exploratorium.edu/baseball/

Science of Cycling     Science of Cycling takes you behind the scenes to learn about the sport from the perspective of top athletes, bicycle makers, and scientists. From Science of Cycling http://www.exploratorium.edu/cycling/index.html

Flights of Inspiration     First flight made by brothers Wilbur and Orville Wright. Learn about the first non-stop transatlantic flight by John Alcock and Arthur Whitten Brown. Design and test your own model aircraft, as well as understand scientific principles that make flights possible. From Flights of Inspiration http://www.fi.edu/flights/index.html

Company town: Norilsk, Russia     Photo Essay. The smokestacks of Norilsk nickel rise like fists above the frozen Siberian plain. Despite the splintering of the Russian economy, regardless of whether the miners can make do on their inflation-ravaged wages, the filthy plumes rise relentlessly from the smelters, blackening the Siberian skies 200 miles above the Arctic Circle. From LIFE: NORILSK http://www.life.com/Life/essay/norilsk/

Asteroids: deadly impact     While playing an FBI detective the user learns to distinguish between asteroids, meteors, comets and meteorites. Major stellar bodies collisions with the Earth are also described. Limited content. From Asteroids: Deadly Impact @ nationalgeographic.com http://www.nationalgeographic.com/asteroids/index.html

Lightning: the Shocking Story     Get the science and the stories behind the bolts that strike our earth a hundred times every second. From Lightning @ nationalgeographic.com http://www.nationalgeographic.com/lightning/index.html

Super bridge     How would you span a freeway? A canyon? A river? Or an ocean waterway? Learn about the four major types of bridges and then test your knowledge by matching the right bridge to the right location. From NOVA Online | Super Bridge http://www.pbs.org/wgbh/nova//bridge/

Balloon Race Around the World     Delve into the history of science and ballooning, follow the attempts of earlier balloonists to make the round-the-world flight, and take a virtual trip around the world in a balloon, and read an interview with Steve Fossett. Poor navigation. Limited content. From NOVA Online | Balloon Race Around the World http://www.pbs.org/wgbh/nova/balloon/

Bombing of America     Investigative process that occurs following a bomb explosion. Among the subjects discussed are the scientific methods used to identify the chemical content of the bomb, tragic facts about juvenile bombers, and analysis of the evidence obtained from the Unabomber From NOVA Online/Bombing of America http://www.pbs.org/wgbh/nova/bombing/

Fast cars     History of fast cars and about people's attempts to design and drive a car than can travel faster than the speed of sound. From NOVA Online | No Longer Available http://www.pbs.org/wgbh/nova/fastcars/

Cracking the Ice Age     Ice periods and earth's global warming. Learn how scientists can tell the continents are moving. Limited content. From NOVA Online/Cracking the Ice Age http://www.pbs.org/wgbh/nova/ice/

Bomb squad     Bomb disposal units are increasingly relying on robots to take over the dangerous task of finding and defusing bombs. But robots are also taking an other hazardous duties, and their capabilities are evolving rapidly. What might they be capable of in the next century? Take a trip into the world of robots. From NOVA Online | Bomb Squad http://www.pbs.org/wgbh/nova/robots/

Doomsday asteroid     Composition and origin of comets. Learn about the recently discovered Hale-Bopp and the Hyakutake comet. Make "kitchen" comets using dry ice (It's fun, it's a mess, and it's one of the most memorable and scientifically accurate demonstrations in astronomy!). From NOVA Online | Doomsday Asteroid http://www.pbs.org/wgbh/nova/spacewatch/

Supersonic spies     What will the next generation of supersonic jets, capable of flying at extreme speeds look like? When will they take to the skies? Explore the future of air travel with diagrams, animation and text - and find out what keeps today's Concorde aloft. From NOVA Online | Supersonic Spies http://www.pbs.org/wgbh/nova/supersonic/

Alien worlds     Constellations of stars and the origins of planets. Find out what signs of life beyond Earth have been found, and what would disclose life in outer space for sure. From NOVA Online/Hunt for Alien Worlds http://www.pbs.org/wgbh/nova/worlds/

Innovative lives     Collection of biographies and major achievements of selected inventors, both from the near past and the present. From Innovative Lives http://www.si.edu/lemelson/centerpieces/ilives/index.html

Stanford linear accelerator     Stanford Linear Accelerator Center's Virtual Visitor Center. Learn a high-energy physics, accelerators, detectors, applications, experiments, and more! From SLAC Virtual Visitor Center http://www2.slac.stanford.edu/vvc/home.html

Discovery of the Electron     Read, see, and hear about J. J. Thomson's 1897 experiments, which helped bring understanding of the electron as a fundamental unit of matter. From The Discovery of the Electron http://www.aip.org/history/electron/

Heisenberg: Quantum Mechanics and the Uncertainty Principle     Werner Heisenberg was one of the greatest physicists of the twentieth century. He is best known as a founder of quantum mechanics, the new physics of the atomic world, and especially for the uncertainty principle in quantum theory. He is also known for his controversial role as a leader of Germany's nuclear fission research during World War II. From Heisenberg / Uncertainty Principle - Werner Heisenberg and the Uncertainty Principle http://www.aip.org/history/heisenberg/

Science of Hockey     The NHL's San Jose Sharks help look inside the sport of hockey and explain the science behind the world's fastest game. Contains RealVideo and Audio interviews with top scientists and NHL players and coaches. From Science of Hockey http://www.exploratorium.edu/hockey/index.html

Electric Ballerina     Watch an animation of difficult ballet elements such as fouettes, and jumps. The electric ballerina demonstrates ballet technique and makes use of a basic principle in physics. From The Electric Ballerina http://www.novia.net/~jlw/electric/electric.html

Transistorized!     The transistor: the most important invention of the 20th century. Learn about the scientific bases of how transistor works. From Transistorized! The History of the Invention of the Transistor - Home Page http://www.pbs.org/transistor/index.html

Avalanche!     Go behind the scenes to see how natural disasters are captured on film. Learn how the movie Avalanche was shot and the elements of an avalanche. From NOVA Online | Avalanche! http://www.pbs.org/wgbh/nova/avalanche/

Faster than sound     It has been 50 years since test pilot Chick Yeager broke the sound barrier. Learn about those early days, discover what creates a sonic boom, or find out about the latest attempts to beat speed records on land, water, and in the air. From NOVA Online | Faster Than Sound http://www.pbs.org/wgbh/nova/barrier/

Einstein revealed     Timeline of Einstein's life and discoveries. Get a general explanation of his principle of relativity and light mechanics. From NOVA Online/Einstein Revealed http://www.pbs.org/wgbh/nova/einstein/

Escape     Brief chronicle of what engineers have learned from past disasters to make accidents increasingly survivable. Explore the myriad safety features that have progressively appeared in cars, planes, lifeboats and other machines. Learn what can happen to mind and body during and immediately after an accident. From NOVA Online | Escape! http://www.pbs.org/wgbh/nova/escape/

Thomas Alva Edison     Life, thoughts and discoveries of the great inventor Thomas Edison. From Lemelson Center Invention Features: Thomas Edison http://www.si.edu/lemelson/edison/html/thomas_alva_edison.html

Floral Radiographs: The Secret Garden     Photo essay of beautiful flower X-radiographs. A beautiful blossom is a fleeting thing It stays for a moment and then takes wing: With special rays we catch it ere flight So all may enjoy the beautiful sight. From The Secret Garden http://www-personal.umich.edu/~agrxray/

Exploration of the Earth's Magnetosphere     Brief tour of magnetosphere, a space region dominated by the Earth's magnetic field. Includes a quick overview of the relevant physical sciences - magnetism, ions and electrons, plasmas etc. - and also includes tidbits of history, accessible by a "history button" at the ends of many sections. From The Exploration of the Earth's Magnetosphere http://www-spof.gsfc.nasa.gov/Education/Intro.html

Einstein: Image and Impact     Einstein's biography. Learn about his greatest inventions in chronological order. Hear his voice explain his famous equation. From Einstein-Image and Impact. AIP History Center exhibit. http://www.aip.org/history/einstein/

How stuff works     How everyday stuff works such as TV, refrigerator, airplane, solar cells and much more. From HowStuffWorks - Learn how Everything Works! http://www.howstuffworks.com/

Kaboom!     Anatomy of a Firework, the chemical makeup of pyrotechnic display, and an interview with Stacey Loizeaux, Demolition Woman. Requires plug-in, Macromedia Shockwave. From NOVA Online/Kaboom! http://www.pbs.org/wgbh/nova/kaboom/

Buckminster fuller: Thinking out loud     Architectural and other inventions of the great Buckminster Fuller. An architect, designer, engineer, poet, philosopher, author and global iconoclast, Fuller was a true visionary, a Renaissance man best remembered as creator of the geodesic dome. Find out about the geodesic dome, dymaxion house, transport, megastructures and more. From www.pbs.org/wnet/bucky.cgi http://www.thirteen.org/bucky/