Group items tagged

"It depends on what you define as "electricity". Do you mean the flow of "electrons" or the flow of "current"? Because, due to an unfortunate quirk of history, the direction of *current* flow is opposite to the direction of *electron* flow. "

explore Computers and Electronics at MIT

"solid introduction to microcontrollers and basic electronics. "

"GET STARTED WITH ARDUINO! Arduino is an open source electronics platform consisting of a simple microcontroller board and a development environment for writing software. It's a great way to get started with open-source electronics. Join in the projects!"

"Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. "

"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. "

"Please let me remind all of you--this material is copyrighted. Though partially funded by NASA, it is still a private site. Therefore, before using our materials in any form, electronic or otherwise, you need to ask permission."

"Do you want to take your middle-school science students on a field trip without breaking the budget? Wish you had an alternative? Purdue zipTrips™ is the answer!! These free electronic field trips will bring a new experience in science education directly to your school."

"The laboratory will provide online access to data from real physical instruments and equipment - developing cutting-edge technology including: remote access to laboratories and observatories: students can operate real physical equipment controlled remotely - a method already established in astronomy virtual laboratories and instruments, such as the virtual microscope: interactive screen experiments will include photo-realistic recordings of physical experiments and replicate the behaviours of real specimens online field investigations: these can involve electronic access to a conventional field trip or offer a virtual experience using satellite-borne and remotely-operated sensors citizen science: a distributed way of gathering data, where non-professionals collect or process data as part of a scientific enquiry. This data can be combined to offer new insights.

Researchers have found a way to make multiple high-performance anodes from a single silicon wafer. The process uses simple silicon to replace graphite as an element in rechargeable lithium-ion batteries, laying the groundwork for longer-lasting, more powerful batteries for such applications as commercial electronics and electric vehicles.

more engineering than science, electronics, robotics

"Dallas Personal Robotics Group (DPRG), founded in June of 1984, is one of the nation's oldest special interest groups dedicated to the development and use of personal robotics. The DPRG is a 501(c)(3) not for profit educational organization. DPRG members are interested in autonomous robots, movie replica robots, vintage robots, robot and kinetic art, as well as just about anything involving electronics, technology, or science"

"get students collaborating successfully and productively with one another. Check out these great tools for electronic student collaboration…"

All kinds of stringed instruments - guitars, pianos, violins - have stretched strings which oscillate when plucked or struck. This oscillation generates sound, which can be amplified acoustically by coupling the vibrations to a large sound-board (for a guitar, the top, and in an upright piano, at the back) or electrically by turning the string oscillations into an electrical signal (using a 'pickup') which can be sent to an electronic amplifier / loudspeaker.

"some tips about how to better use Gmail. There are many features and services that Gmail offers for free yet only few people know about them and use them. Being educators, we do need to be aware of these freebies. They can save you so much time and make your electronic mailing experience way better than you have ever thought."

amazing demonstration - table saw stops when it detects something conductive - like a finger without any damage to the finger.

"How does 'electricity' work? If you've learned about electricity from grade-school textbooks, then first we have to do some "debunking" and find out how electricity DOESN'T work. "

"This page covers the simple case of driving LEDs directly with Arduino pins. The same information would be helpful to users of PICs and other sources of digital output lines. It does not go into the more interesting matter of multiplexed LEDs."

"Arduino examples, tutorials, and documentation elsewhere on the web. "

"AN/AAQ-37 Electro-Optical Distributed Aperture System (EO DAS) for the F-35"