What is a perfect fluid - It is a theoretical model of a fluid that allows to assume that the fluid is not viscous, that it does not conduct heat, that it is incompressible and does not create vortices. It is therefore an approximation of reality that simplifies the theoretical predictions of fluid flows. For the first time, an international team has experimentally demonstrated this same behavior for light immersed in a medium of low refractive index.
The refractive index characterizes the propagation of light in a given material. If it approaches zero, the light then takes on aspects similar to a fluid. This fact was first demonstrated theoretically in 2020 by an international team of researchers, including Dr. ...
