Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Bell Laboratories, one of the world’s largest industrial laboratories and now part of Lucent Technologies, was originally the research and development arm of the giant telephone company American ...