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Há 4 horas · Light being refracted by a spherical glass container full of water. Roger Bacon, 13th century. Lens for LSST, a planned sky surveying telescope. The word lens comes from lēns, the Latin name of the lentil (a seed of a lentil plant), because a double-convex lens is lentil-shaped. The lentil also gives its name to a geometric figure.
Há 10 horas · According to the study’s abstract, the attosecond microscope will allow physicists, optical scientists, and other experts to study electron motion in unprecedented detail and “directly connect ...
Há 2 dias · This is quite a feat: Electrons travel at roughly 1367 miles per second (2,200 kilometers per second), making them capable of circumnavigating the Earth in only 18.4 seconds. Swift SW380T. (Image ...
Há 4 dias · The dispersion of light by glass prisms is used to construct spectrometers and spectroradiometers. However, in lenses, dispersion causes chromatic aberration, an undesired effect that may degrade images in microscopes, telescopes, and photographic objectives.
Há 2 dias · Fig.4 A) positive dispersion through an optical system without a compressor, B) dispersion through a system with a pulse compressor illustrating dispersion compensation. Ideally, we want the negative dispersion from the compressor to cancel out the positive dispersion from the microscope optics to achieve the shortest possible pulse at the sample.
Há 4 dias · A simple microscope is a basic optical instrument designed to magnify objects using a single convex lens. This lens, which is shaped to converge light rays, enables the visualization of details that are otherwise too small to be seen with the naked eye.
Há 2 dias · Asteroid (3200) Phaethon experiences extreme solar radiant heating ( ~ 750 °C) during perihelion (0.14 au), leading to comet-like activity. The regolith composition and mechanism of volatile ...
