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Vor 2 Tagen · Currently, better candidates for black holes are found in a class of X-ray binaries called soft X-ray transients. In this class of system, the companion star is of relatively low mass allowing for more accurate estimates of the black hole mass. These systems actively emit X-rays for only several months once every 10–50 years. During the period of low X-ray emission, called quiescence, the ...
Vor 4 Tagen · —Rhimes on the creation of Grey's Anatomy While creating characters, as well as writing the first script, the series' writers had no character descriptions in mind, and hoped to cast the best actor available for each part. Rhimes has said that if the network had not allowed her to create characters this way, she would have been hesitant about moving forward with the series. Female roles, in ...
Vor 2 Tagen · e−. , or. β−. in nuclear reactions) is a subatomic particle with a negative one elementary electric charge. [13] Electrons belong to the first generation of the lepton particle family, [14] and are generally thought to be elementary particles because they have no known components or substructure. [1]
Vor 3 Tagen · The universe is all of space and time [a] and their contents. [10] It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter, and the structures they form, from sub-atomic particles to entire galactic filaments. Space and time, according to the prevailing ...
Vor 3 Tagen · Americium-241 has been used as a portable source of both gamma rays and alpha particles for a number of medical and industrial uses. The 59.5409 keV gamma ray emissions from 241 Am in such sources can be used for indirect analysis of materials in radiography and X-ray fluorescence spectroscopy, as well as for quality control in fixed nuclear density gauges and nuclear densometers .
Vor 5 Tagen · Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues.
Vor einem Tag · The Tampa Bay Lightning (colloquially known as the Bolts) are a professional ice hockey team based in Tampa, Florida. The Lightning compete in the National Hockey League (NHL) as a member of the Atlantic Division in the Eastern Conference. They play their home games at Amalie Arena in Downtown Tampa .
