In 1873, the German physicist Ernst Abbe realized that the resolution of optical imaging instruments, including telescopes and microscopes, is fundamentally limited by the diffraction of light.

It is necessary to adjust the position of the electron beam as the voltage is varied. It is worthwhile to contrast the diffraction of electrons with the diffraction of light by a two dimensional grid.

Q: What are diffraction gratings? A diffraction grating is an optical component for spectroscopy that splits light into different wavelengths. A typical diffraction grating has thousands of ...

What is the Diffraction Limit? The diffraction limit is a fundamental barrier in optical microscopy that sets the minimum size of features that can be resolved using conventional light microscopes. It ...

Shadow casting is based on light rays interacting with different geometries, whereas diffraction casting is based on ...

Depending on how an object interacts with light, it could appear vividly colored ... of a meter thick—without relying on traditional diffraction methods to retain the light within the material.

The waves always 'spread' to some extent into the area beyond the gap. This is diffraction - the spreading out of waves when they go through a gap, or past the edge of a barrier. The extent of the ...

Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

POSTECH Professor Junsuk Rho’s Team Develops a Multidimensional Sampling Theory Spanning the Entire Electromagnetic Spectrum—from Extreme Ultraviolet to Microwaves.

When a laser beam is incident on a narrow opaque object such as a fine wire or a strand of hair, the resulting diffraction pattern is similar to the diffraction pattern of a slit of the same width as ...