Math, Physics, and Engineering Applets Oscillations and Waves Acoustics Signal Processing Electricity and Magnetism: Statics Electrodynamics Quantum Mechanics Linear Algebra Vector Calculus Thermodynamics Miscellaneous Licensing info. Links to other educational sites with math/physics-related information or java applets useful for teaching: And when you get tired of learning, here is some fun stuff: Java Pong Applet a cute little pong game I wrote a while ago. Visible Earth: Home Women in Space | MAKERS Season 2 Makers: Women in Space traces the history of women pioneers in the U.S. space program. Some, like aviators Wally Funk and Jerrie Cobb, passed the same grueling tests as male astronauts, only to be dismissed by NASA, the military, and even Lyndon Johnson, as a distraction. It wasn’t until 1995 that Eileen Collins became the first woman to pilot a spacecraft. The program includes interviews with Collins, as well as Sally Ride’s classmates Shannon Lucid, Rhea Seddon and Kathryn Sullivan, and features Mae Jemison, the first woman of color astronaut, and Peggy Whitson, the first female commander of the International Space Station. Makers: Women in Space airs October 14th on PBS
Animal Vector Graphics Jump in and download these free animal vectors. We've rounded up an assortment of cute animal characters drawn in a quirky styles. There are a variety of looks represented, such as: flat vintage, shiny modern anime, childish crayon, chibi characters, and more. The glue holding these together are their must have lovable construction. Many of these graphics are available for commercial use, as well as personal use. This article is chock full of vector cartoon animal drawings. 1. Each Envato Marketplace has an animal that goes with it from ThemeForest's bear to VideoHive's bee. The vector illustrations for these eight mascots are available for use under a Creative Commons non-commercial license. 2. As part of Envato's fifth year anniversary, I designed some fun vector graphic freebies. 3. This set of free mice characters were created by Iaroslav Lazunov for exclusive release through Vectortuts+. 4. 100 Cute Animals - Free Graphic Characters 5. 6. 7. 8. 9. 10. 11. 12.
Current Night Sky The Sky At A Glance There is a total lunar eclipse on April 15. The entire total phase will be visible from most of North America and western South America. (See "What's New") There is an annular solar eclipse on April 29. The Moon & Planets On April 6, the First Quarter Moon passes about 6° below Jupiter. Evening Planets (after sunset) Jupiter, WMars, SE Visible at Midnight Jupiter, WMars, SSaturn, SE Morning Planets (before sunrise) Mars, WSaturn, SWVenus, EMercury, E (early April)Neptune, E Comets There are no comets brighter than magnitude 8.0 visible in April. Meteors The Lyrid meteors peak on April 22.
Learn Physics Today! As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation
NASA Earth Observatory Space travel and sandwich wrappers | Photographers' Blog Baikonur Cosmodrome, Kazakhstan By Shamil Zhumatov As a great photographer once put it, “to take a good picture, come closer to the object.” But how on earth could I take a close-up shot of a Soyuz rocket as it blast off amid orange flames? Especially when, to comply with safety requirements, I was in a photography position over a kilometer away from the rocket. The answer was to leave a remote camera at the launch pad. One option, which was used during the launches of U.S. Space Station from Reuters Pictures on Vimeo. The launch of a Soyuz into orbit is meticulously calculated to the last second. Once the technical problem was solved, I prepared the rest of my kit; as well as my camera, this included a bag for gravel to keep the tripod steady, sandwich wrapping, and scotch tape. Each of us invents something peculiar to protect the equipment we leave at the launch pad. I started to be plagued by doubts. Only my “sandwich” ball was still standing firmly upright.
SpoonGraphics 10 Free Retro Text Effect Graphic Styles for Adobe Illustrator Last week I shared a tutorial showing how to create a retro text style using Adobe Illustrator. I had lots of fun producing that effect, so I’ve been busy crafting a number of additional colour combinations to create a collection of 10 free retro text styles for you to download. 12 Free Cinematic Photo Effect Actions for Adobe Photoshop I’ve been having fun working on a brand new set of free Photoshop Actions to transform your photographs with various contrast and colour alterations. 10 Free Black Grunge Textures Made From The Ashes of Hell! 30 Free Magic Bitmap Texture Graphics for Adobe Illustrator I have a new collection of free design resources to share with you this week, and these are MAGIC… Well not really, but kind of! 20 Free Vector Pallet Wood Textures in AI, EPS & PNG Format 10 Free Subtle Grunge Texture Brushes for Adobe Photoshop
Origins Origins: Back to the Beginning September 29, 2004 NEIL deGRASSE TYSON (Astrophysicist): A hellish, fiery wasteland, a molten planet hostile to life, yet somehow, amazingly, this is where we got our start. Right now, we're all eavesdropping on the birth pangs of the cosmos. DAVID SPERGEL (Princeton University): ...how big it is, how old it is, what's it made of, and what were the processes that made galaxies, that made us. NEIL deGRASSE TYSON: So a furious race is on to solve the ultimate mystery. ANTHONY READHEAD (California Institute of Technology): The spirit of competition is one of the things, of course, that drives scientists. Keep our fingers crossed. NEIL deGRASSE TYSON: And as our new vision of the universe emerges, strange ideas reveal themselves. STAN WOOSLEY (University of California, Santa Cruz): Stars are the ultimate alchemist. ROBERT KIRSHNER (Harvard University): You get carbon and nitrogen and oxygen made in stars. We see you inventing the next big thing. Hello. CHARLES L.
Community FQXb (bio)By WILLIAM OREM • Mar. 23, 2014 @ 21:39 GMT Everyone is talking this week about the dramatic confirmation of inflationary theory: those first-instant gravitational waves whose details may even point--being, if you will, quantum phenomena that went suddenly ultra-macroscopic--toward the correct way to unify QM and GR. I myself have been musing on rather astonishing work in another field. Will you pardon the intrusion if we talk a little bit about biology? Recently the big news there was released: an unprepossessing experiment involving a weak acid bath showed it's possible to revert mature, differentiated cells to a stem cell state, allowing for the prospect of wholesale repurposing. The surprise wasn't that reversion (or conversion from one mature type into another) can be done--genetics work in that direction took home a Nobel in 2012--but that it can be done so simply. Alas--you knew this part was coming--it is now looking like the champagne may have been premature. 1. 2. 3.