Demonstrate diffraction using a candle or a small bright flashlight bulb and a slit made with two pencils.
The new eBeam Edge is the next generation hardware version of Luidia’s eBeam interactive whiteboard system. Like previous eBeam systems, it works with standard computers, projectors, and a variety of input devices to transform existing whiteboards and writing surfaces into
Digital video has introduced all kinds of possibilities for do-it-yourself television in schools. But with budgets stretched tighter than ever, teachers and media specialists may despair their productions may never look better than Uncle Fred's home videos. "We can't afford better cameras," is a cry I hear