Optical systems such as telescopes or microscopes can be complex. Others like a magnifying glass are rather simple. However, all of these optical devices rely on lenses. Learn more about how lenses work where they are used in part four of a five-part Mini Lecture series on “Light and Optics”.

Tools made of light sound like science fiction. However, tools made of light have a high impact in our everyday live. Learn more about this impact in part five of a five-part Mini Lecture series on “Light and Optics”.

Lighting the Earth by LEDs