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"All magnetic fields are produced by moving or spinning charged particles…somewhere Magnetism is a force in nature that is produced by electric fields in motion. This movement can involve electrons 'spinning' around atomic nuclei, flowing through a conducting wire, or ions moving through space in an organized stream. The remarkable thing is that whenever a charged particle moves, the electric field it produces is also moving through space, and it is this moving electric field that is detected as a magnetic field. "

"Mary Kies was the first American woman to earn a patent in her own name. In 1809, she developed a way of weaving straw into hats that was an economic boon for New England. By receiving that piece of paper with her name on it, Kies led the way for other female inventors to take credit for their ideas. In this article, we'll salute 10 things invented by women."

While early adopters were quick to jump on the renewable energy bandwagon for sustainability reasons, the rising cost of traditional energy has spurred growth in wind and solar.

The Physics of Sailing Northern California has a storied, 500-year history of sailing. But despite this rich heritage, scientists and boat designers continue to learn more each day about what makes a sail boat move. Contrary to what you might expect, the physics of sailing still present some mysteries to modern sailors."

"Building Type monumental statue and observation tower Construction System iron frame, copper cladding Climate temperate Context island, urban waterfront Style neoclassical realistic sculpture"

"after racing on this boat, everyone on board can safely say that they've hit the pinnacle of their sailing career. I mean, what else could naval architects come up with that is more ridiculously awesome than this?"

"Oracle Team USA Sending it on San Francisco Bay"

"But as energy demand climbs, so have efforts to turn wind into a viable option for producing electricity on a large scale. Wind turbines in particular are what people think of when discussing wind power. These turbines can measure more than 400 feet (122 meters) tall and weigh in at close to 400 tons."

" The device uses layers of ultrathin materials that can make its wings flap 120 times a second, which is on a par with a housefly's flapping rate. This "required tremendous innovation in design and fabrication techniques", he adds. The robot's wings are composed of thin polyester films reinforced with carbon fibre ribs and its 'muscles' are made from piezoelectric crystals, which shrink or stretch depending on the voltage applied to them."

"What it is: Numberphile is a series of "numberly" videos by Brady Haran. This is the same guy behind some other great projects including periodicvideos and sixtysymbols. These videos reveal some of the mystery behind numbers and math in fun, short snippets! I could give a long, drawn out explanation about the site…but really, you should go have a look and play a few videos."

"The goal is to create an assistance system that is easy to operate and will be accepted by senior citizens. In addition to the exercise armchair, GEWOS also includes a web platform as a central interface for information management. The platform can be used to call up health-relevant data and to integrate physicians and health experts. "Senior citizens should be able to get around independently in their own four walls as long as possible. For that to succeed they have to stay healthy. The exercise armchair gives them an easy and motivating way to stay fit," Feilner concludes."

"newly issued Black Hornet miniature surveillance helicopter during an operation in Afghanistan. The Scandinavian-designed Black Hornet Nano weighs as little as 16 grams (0.56 ounces)-the same as a finch. The four-inch-long (10-centimeter-long) helicopter is fitted with a tiny camera which relays still images and video to a remote terminal. Troops used the drone to look for insurgent firing points and check out exposed areas of the ground before crossing."

"Invention Mysteries reveals the little-known secrets behind well-known inventions"

"Your goal is to build a bridge so that the workers can get the cargo from the other side of the valley. You have a limited budget for each level, so you'll need to plan ahead as you build! "

"In Bridge Constructor, you can become an accomplished bridge builder without any formal training. Play 30 different levels, and build bridges over deep valleys, canals, or rivers. Stress tests reveal whether the bridge you build can withstand the daily stress of continual use from cars and trucks. Creativity and imaginativeness is in demand if you want to master the challenging 30 stages of Bridge Constructor!"

"A simple machine is a device that changes the direction or amount of a force. They are the building blocks used to build more complex machines. For example, wheels, levers, screws, and pulleys are all used in a bicycle. The six simple machines are: Inclined Plane Lever Pulley Screw Wedge Wheel and Axle"

"The solar cells that power solar aircraft are called photovoltaic (PV) cells. PV cells are made of materials that absorb light energy. The PV cells in most solar planes are made of silicon. Silicon is both lightweight and efficient, so it is the best choice for solar planes where the challenge is to create an aircraft light enough to fly but with enough power to get off the ground."

"Science Of Innovation - From Thomas Edison's light bulb to Wilbur and Orville Wright's flying machine, inventors and inventions transform the way we communicate, travel and live our daily lives--thanks to the creative process of innovation. That process is highlighted in this video series The Science of Innovation. In celebration of the 165th birthday of one of America's greatest innovators, Thomas Edison, the National Science Foundation, the U.S. Patent and Trademark Office and NBC Learn, produced this 11-part series narrated by NBC News' Ann Curry highlighting innovators from across the country. "

" useful tools for teaching and learning the topic of kinematics in physics. "