![](http://www.alamy.com/thumbs/6/FBC9296C-21E1-461C-BC07-2568BF4F83BA/2ADC7BA.jpg)
Crystals of ammonium sulphate imaged under polarised light.
Size: 6000px × 4000px
Photo credit: © KARL GAFF/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ammonium, birefringence, chemical, chemicals, chemistry, compound, compounds, crystal, crystals, fertiliser, fertilizer, interference, light, optics, physical, physics, pol, polarised, polarized, refraction, refractive, sciart, scienceart, sulfate, sulphate