Downloadable ( 1 PDF - 8 pages)
Watch as light appears to bend in this optics experiment. Here, students learn that light isn’t really bending. The stream of water acts like a tube lined with mirrors on the inside (the technical name is total internal reflection) and the light is bounced back and forth, remaining within the stream of water. This mimics how a fibre optic cable works - light travels down a glass tube that is surrounded by a jacket (called cladding) which is one continuous, inward facing mirror. Since light only travels in straight lines and cables need to turn and bend, this ensures that the signal is always transmitted.
After completing these experiments, students will:
Additional resources required: