Researchers from IIT Kanpur and Leiden University have developed a novel method for measuring light's orbital angular momentum, or the amount of twist.
Gelechia bilobuncusa (top, left: ), Gelechia adi (top, right), and Istrianis ladakhensis (bottom). Image credit: Authors, https://doi.org/10.11646/zootaxa.5728.1.6
New Delhi/