Place the laser on top of the lab jacks, making sure the laser is pointed away from people. Place the slide mount on the optical rail and insert the sample slide to the slide mount. Plug in the laser ...

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 ...

EARLIER I reported some experiments in which interference phenomena produced by different parts of the diffraction image of a telescope were examined 1–3. It has been shown 3 that by observing the ...

When Galileo Galilei used a new invention called the telescope to watch the heavens, he revolutionized astronomy. But his estimates of the distances to the stars were thousand of times too short. A ...

If you shine a beam of light from a laser or flashlight, the beam will spread out over distance, becoming wider and less intense far from the source. That phenomenon is called diffraction, and it is ...