NASA has proposed shooting at the moon to further our understanding of what it's made of. The out-of-this-world plan would involve an astronaut or rover using a special gun to shoot sensors into the ...

Fresnel diffraction describes the complex light propagation that occurs when a wavefront encounters an abrupt phase change, typically at the boundary of two different media or at an engineered phase ...

Americans are famously fond of their guns. So it should come as no surprise that a team of NASA scientists has devised a way ...

Visual demonstration of the performance of the diffraction grating. The zeroth order transmission refers to light that goes straight through the grating without undergoing diffraction (which should be ...