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 ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 11, No. 8 (Aug. 15, 1925), pp. 498-502 (5 pages) ...

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) ...

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 ...