Since this is supposed to be in large part a science-focused blog, I wanted to get started with some serious posts about scientific topics. Like most of the established science bloggers, I’ll be mixing up posts which are on basic scientific concepts and posts which are on specific, technical, topics. This post will be one of the former.
My physics specialization and area of research is optical science. Though most people associate the word ‘optics’ with the engineering of lenses for eyeglasses, telescopes, and microscopes, in physics the term more broadly refers to the study of the behavior of light and its interactions with matter. The connection to eyeglasses and the like is not accidental, however: the development of various optical tools led scientists to study more closely the behavior of the light that those tools channeled.
Today, we may roughly group the study of optics into three broad subfields of study:
- Geometrical optics, the study of light as rays
- Physical optics, the study of light as waves
- Quantum optics, the study of light as particles
Let’s look at each of these subfields in turn, both historically and scientifically.
