Polarized photomicrograph sand grains collected near the pyramids, Giza, Egypt.
Constructing the pyramids involved moving huge quantities of stone. The quarried blocks were likely transported to the construction site by wooden sleds, with sand in front of the sled wetted to reduce friction. Droplets of water created bridges between the grains of sand, helping them stick together. Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt.
Size: 3898px × 2599px
Photo credit: © Scenics & Science / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: anisotropic, birefringence, collected, crystalline, egypt., giza, grains, micrograph, microscope, photomicrograph, polarized, pyramids, sand, silica
