Osaka, Japan — Though it sounds like something straight out of science fiction, controlling the speed of light has in fact been a long-standing challenge for physicists. In a study recently published ...

Laser diffraction is recognized as the most reliable light scattering method for analyzing particle size distributions across a range from submicron to millimeter particles. The diffraction set-up ...

According to Albert Einstein's principle of relativity, the speed of light is constant and cannot be exceeded; however, it is possible to control the group velocity of optical pulses. Currently, the ...