Fig. 2: The top images are photographs of the diffraction patterns observed when the samples were a) water, b) methanol, c) ethanol, and d) 1-propanol.
From: Unveiling the properties of liquids via photothermal-induced diffraction patterns
All the photographs were captured with an EOS-M50 Cannon camera. The bottom blue images are the corresponding spatial digital Fourier transforms of the photographs.
