Strips of gelatin dessert and a laser pointer demonstrate total internal reflection.

Today, when most people think of a printer, they think of a laser jet printer that prints ink on paper. But thanks to new technology, engineers have developed 3D printers that can print objects-and even food. As you read, take notes...

[Free Registration/Login Required] In the scenario shown here, the laser cannot shine through the black barrier but can hit all three targets by reflecting off of the floor. Use the red dot to change the angle of the laser generator and...

[Free Registration/Login may be required to access all resource tools.] What optics are and different types, and how they work and form images.