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  Behind the brilliant colors of the fireworks, there is a secret of the composition of the sun elements.

  (photo Source: Pixabay) Writing | KKC Spring Festival, colorful and shaped fireworks bloom in the night sky, setting off a festive atmosphere. While enjoying the gorgeous fireworks, you might imagine that the scientific process of studying the composition of elements on the sun is actually related to the fireworks.

  Spectra sun elements wavelengths dark lines colors reactions emission experiments spectral lines sunlight chemistry reference materials materials Kiel Hoff reference fireworks chemical elements absorption spectra 2023-11-24
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  The elements contained in poison top-flow arsenic are also used to cure diseases.

  Napoleon Bonaparte (Napoleone Buonaparte,1769-1821) sneaked back to France from the exiled island of Elba in 1815. Who knew that in time on the expedition, he followed his old subordinate, the famous mathematician Jean-Baptiss Joseph Fourier (Je).

  Treatment Fowler solution Marsh Century Doctor arsenic trioxide Science poisoning Chemistry Age White Blood Leukemia arsenic Sulfide Napoleon Faraday Farad Research Poison arsenic trioxide 2023-11-24
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  The problem of return order of Table data in MYSQL INNODB

  Follow on to the previous article: how http://blog.itpub.net/7728585/viewspace-2126344/ proves that the leaf nodes of the INNODB secondary index have the same key values and are sorted by PRIMARY KEY in the previous article.

  Index order auxiliary leaf data that is case node sort performance conclusion way program Bunsen query validation different no surprise obvious 2022-06-01
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  The Miracle of the History of Science: the contribution of intuition beyond understanding

  This article comes from the official account of Wechat: back to Park (ID:fanpu2019), written by John D. Barrow, translated by Tang Jing and Li Pan in the face of more than 60 known elements, all chemists want to sort out a system, but only one person succeeded: he made a picture.

  Elements chemistry atoms Mendeleev cycles periodic tables atomic weights electrons compounds lava science chemists matter tables Dale Dalton research people that is compounds. 2023-11-24
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  Can you isolate the signal by wrapping all the aluminum foil around the phone?

  After the mobile phone enters the elevator, the signal will drop abruptly because the metal elevator has formed a Faraday cage, so can the signal be shielded with aluminum foil? Q1, what is the principle of high voltage transmission? Why can high voltage transmission reduce the loss of electric energy? By Hu replied: the loss in power transmission mainly comes from Joule heat.

  Electromagnetic plasma oxygen electromagnetic waves reflection action flame myopia that is mobile phones metals gases concentration transmission conditions ecology plasma retina iron powder problems 2023-11-24