Debra Semmler, Physics, East Mecklenburg High School
200 Word Synopsis
In 1826, J.N. Nieprci produced the first photograph using a camera obscure, which required an eight- hour exposure time. In the 175 years since this historical event the methods by which we take pictures has changed. No longer is there a need for eight-hour exposures or even film. A digital device called a charged-coupled device or CCD creates images in today’s cameras. In this curriculum unit the physics of how charged-coupled devices produce an image and transfer that image to a digital format is described. The objectives of my curriculum unit are to explain the structure of a charge-coupled device (CCD) and how light causes charge to build up in a pixel. Students will have to define quantum efficiency, magnification and resolution in the operation of a CCD.