Aubree H of USA;Georgia asks...
what kind of equipment do you use to study light?
There are many different research activities that relate to the study of light and how light interacts with matter. And depending on which activity you work on, the instruments you use are going to vary. I like to build lasers and I use, for example, cameras to acquire images of the laser beam so I can properly measure how the beam looks like (the size, how the energy is distributed across the beam, etc). I also use something called a spectrometer, which is something similar to a prism (in fact, a prism may be part of a spectrometer), and allows me to study which colors my laser is made of. In the lab we use many other instruments, and somtimes we have to build our own instruments because we want to measure something that has not been measured before, so the instrument that we need does not yet exist.
Federico Furch, Germany, 2018 OSA Ambassador