👉 Sotter is a scientific term that refers to a phenomenon in which two or more light sources, such as a laser pointer or a flashlight, are pointed at each other and emit beams of light in opposite directions. The light from one source can then be observed by an observer who is standing directly between the two sources.
The Sotter effect occurs when a sputtering beam is emitted from a laser pointer that illuminates a sheet of paper, which then falls onto a stationary mirror. This
sotter