Exploiting a novel technique called phase discontinuity, researchers have induced light rays to behave in a way that defies the centuries-old laws of reflection and refraction. The discovery has led ...

“Carlotta Corpron was a trailblazing American artist who has not yet received the recognition or scholarly inquiry she deserves,” said Hirshhorn Director Melissa Chiu. “We are proud to introduce her ...

Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

Students use mirror equations to determine the position and type. Students use mirror equations to determine the position, type, and size of mirror images for curved mirrors mathematically. Optical ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 14, No. 8 (Aug. 15, 1928), pp. 619-627 (9 pages) ...

Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. from a ...

A ripple tank can be used to investigate the frequency close frequencyThe number of waves produced each second. The unit of frequency is hertz (Hz)., wavelength close wavelengthThe length of a single ...

Figure 1: CUP system configuration. The configuration of the CUP is shown in Fig. 1. The object is first imaged by a camera lens with a focal length of 75 mm. The intermediate image is then passed to ...