NIST scientists have developed an updated laser technology that can visualize methane plumes and other gases in real-time. This video shows a methane cloud swirling and changing. The dark areas indicate little to no methane, while the brighter colors show higher areas of methane. Because it can take pictures very quickly, this technology can show how the methane cloud creates swirling patterns and changes in real-time, which wasn’t possible previously. This “free-form dual-comb spectroscopy” met