A standard spatial Fresnel lens (IMAGE)
Caption
Dr. Filip Sosnicki with a standard spatial Fresnel lens. Its temporal analogue was used in the conducted research (photo: Mirosław Kazmierczak, source: University of Warsaw).
Credit
Photo: Mirosław Kazmierczak, source: University of Warsaw
Usage Restrictions
It is permissable to make use of image provided the source and the author is quoted.
License
Original content