Snowflakes photographed by new high-speed camera

submitted by: nsf
In the late 1800's, Wilson Bentley and Gustav Hellmann began photographing snowflakes. However, their photos revealed entirely different representations of snowflakes. How could nature present two different forms of snowflakes? Today University of Utah engineer Cale Fallgatter and atmospheric scientist Tim Garrett are helping to solve that mystery with the use of a new camera system that photographs free-falling snowflakes. The technology behind the camera that revealed the intricate,...

Science Nation - Science of Shopping

submitted by: nsf
Go into any grocery store and cameras may be watching you. These cameras are not looking for thieves, they're looking for shoppers! The cameras are focused on the tops of peoples' heads (so it's anonymous), but they don't have to see faces to track which store aisles get the most traffic and how long consumers spend looking over products. With support from the National Science Foundation, computer scientist and CEO of VideoMining Rajeev Sharma and his team have designed software that...