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Hace 1 día · Betelgeuse is a red supergiant star in the constellation of Orion.It is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in its constellation.It is a distinctly reddish, semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, has the widest range displayed by any first-magnitude star.
Hace 5 días · This measurement is challenging for polymer-based sensors due to the corrosiveness of the solvents," Lai says. "These structures are so small you could fit 1,000 of them on the surface of a grain ...
Hace 5 días · According to a study published in the journal ACS Nano, researchers at KTH Royal Institute of Technology in Stockholm 3D printed silica glass micro-optics on the ends of optic fibers—surfaces as ...
Hace 5 días · Adresse : Résidence le Séville 157 rue Hippolyte Fizeau 34000 Montpellier Catégorie vente : Autre achat, apport, attribution Bodacc A n°20140141, annonce n°704
Hace 1 día · May 21, 2024. Hans P. Kraus Jr. Inc. presents the exhibition Paris : City of Light & Shadow. La Ville Lumière! Paris first earned the sobriquet, “City of Light,” as a center of learning during the Age of Enlightenment. In the early nineteenth century the advent of gas lighting brought the city’s streets and boulevards alive at night.
Hace 3 días · In an experiment to measure the speed of light by Fizeau’s apparatus, the following data are used: Distance between the mirrors = 12 km Number of teeth in the wheel = 180 Find the minimum angular speed of the wheel for which the image is not seen.
Hace 5 días · With the gold layer, the time the scintillating materials took to stop emitting light after absorbing the X-rays was also shortened by 1.3 nanoseconds on average, or nearly 38 percent, meaning ...
