Breathingearth - CO2, birth & death rates by country, simulated real-time 10rv4pj Geolocation in the Browser « Mozilla Webdev Firefox 3.5 makes it super simple to discover the location of a user on your website You can read more about it from Doug Turner or the official Mozilla page, but today I want to look at how to use the new API. The following image is a screenshot of geolocation plus Google maps. If you’re running Firefox 3.5, we’ll replace that with a real map showing your current position. Geolocation finding me at the Mozilla office. First, we should check that the browser supports the Geolocation API: if (! Now that we’ve cleared out the riff-raff we can dive in to the new feature: navigator.geolocation.getCurrentPosition() I love the simplicity of this API; that’s all you need to know to get the user’s position! navigator.geolocation.getCurrentPosition(function(position) { alert(position.coords.latitude + ", " + position.coords.longitude); }); Since it takes a few seconds to gather location data and send it up to the geolocation services, we must use an asynchronous callback instead of a return value.
Daylight Hours Explorer Shows the hours of daylight received during the year for an observer at a given latitude. This is an important factor contributing to the seasons. Running this animation on your computer... right-click to download daylighthoursexplorer.swf and daylighthoursexplorer.html to the same directory open the html file in a browser to run the animation Linking to this animation... copy and paste the code below into your webpage or blog: Putting this animation on your website... upload daylighthoursexplorer.swf to the same directory as your webpage copy and paste the following code into your webpage:
The Elegant Universe: Pt 1 The Elegant Universe: Part 3 PBS Airdate: November 4, 2003 NARRATOR: Now, on NOVA, take a thrill ride into a world stranger than science fiction, where you play the game by breaking some rules, where a new view of the universe pushes you beyond the limits of your wildest imagination. This is the world of "string theory," a way of describing every force and all matter from an atom to earth, to the end of the galaxies—from the birth of time to its final tick, in a single theory, a "Theory of Everything." Our guide to this brave new world is Brian Greene, the bestselling author and physicist. BRIAN GREENE (Columbia University): And no matter how many times I come here, I never seem to get used to it. NARRATOR: Can he help us solve the greatest puzzle of modern physics—that our understanding of the universe is based on two sets of laws that don't agree? NARRATOR: Resolving that contradiction eluded even Einstein, who made it his final quest. S. BRIAN GREENE:The atmosphere was electric. S.
Visual Satellite Observer's Home Page From left to right the above images are: A Soyuz manned capsule. Satellite captured on a long exposure photograph. The external tank caught just after separation during the STS-2 shuttle mission. If you have ever star-gazed shortly after sunset or before sunrise, you have probably noticed one or two "stars" sailing gracefully across the sky. These are Earth-orbiting satellites, visible due to the reflection of the Sun's light off their surfaces toward the observer. Amateur astronomers seeking new challenges, find that spotting faint, rapidly moving satellites, such as the tiny Vanguard 1 (America's second satellite), are comparable to spotting a distant galaxy. Positional observers precisely measure the time and position of satellites as they cross the sky. Flash observers, measure the period of rotation of spinning satellites, leading to a better understanding of the near Earth environment, especially its magnetic field.