Refraction AI's last-mile delivery robot, the REV-1, has seen an increase in lunch delivery requests since the start of the coronavirus pandemic. REV-1's delivery process is simple: the robot picks up ...

Some people ask Chris Long If the small, silver vehicle trundling about the streets of Ann Arbor these days has a small child in it or perhaps a dog. No, he assures them. The three-wheeled silver box ...

The first law of refraction states that the incident rays, refracted rays, and the normal to the interface at the point of incidence, all lie in the same plane. The ratio of the sine of the angle of ...

Recent experiments that demonstrate the negative refraction of light could bring a heated scientific debate to a close, and give negative-index materials a positive future Figure 1: Negative-index ...