This week in scientific history ‘ the electron

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Whenever you walk through central Cambridge, you will encounter tour groups gathering at key spots throughout the city centre. Perhaps the pub where Watson and Crick ‘discovered’ DNA or the Mathematical Bridge, supposedly ‘designed by Isaac Newton’. Another one of these spots is located just outside the SPS Library on Free School Lane: the laboratory where the electron was discovered.’

122 years ago, on the 30th of April 1897, J. J. Thomson announced his discovery of negatively charged constituents of the atom, which we now call electrons. In the Cavendish Laboratory, then located on Free School Lane, Thompson conducted experiments as Director of the Laboratory. He investigated the conduction of electricity through gases ‘ work for which he would win a Nobel Prize in 1906.

Publisher: Varsity Online
Twitter: @varsityuk
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Other things to check out:

Researchers observe rarest event in history of the universe

Around 1,500 meters deep in the Italian Gran Sasso mountains is the underground laboratory LNGS (Laboratori Nazionali del Gran Sasso), in which scientists search for dark matter particles in a lab sealed off from any radioactivity interference. Their tool is the XENON1T detector, the central part of which consists of a cylindrical tank of about one meter in length filled with 3200 kilograms of liquid xenon at a temperature of -95 degrees Celsius.

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The observed process is called a double electron capture: The atomic nucleus of Xenon-124 consists of 54 positively charged protons and 70 neutral neutrons, which are surrounded by several atomic shells occupied by negatively charged electrons. In double electron capture, two protons in the nucleus simultaneously ‘catch’ two electrons from the innermost atomic shell, transform into two neutrons, and emit two neutrinos. As two electrons are then missing in the atomic shell, the other electrons reorganize themselves, with the energy released being carried away by X-rays. However, this is a very rare process which is usually hidden by signals from the omnipresent ‘normal’ radioactivity ‘ in the sealed-off environment of the underground laboratory, however, it has now been possible to observe the process.

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Publisher: ScienceBlog.com
Date: 2019-04-25T13:16:25+00:00
Author: Author link
Twitter: @ScienceBlogTwit
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What the history of coups in the Middle East tells us about Venezuela

Drew Holland Kinney is a visiting assistant professor of political science at St. John Fisher College.

Though calling the events in Venezuela a coup is contested ‘ the opposition has largely rejected the term, while Maduro’s regime has used it ‘ Guaid’s courting of the military to intervene in the political process and overthrow a state’s executive leadership is a textbook case of civilian coup advocacy.

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StoryCorps to visit UO science and culture museum this week

The UO’s Museum of Natural and Cultural History is partnering with the Emmy Award-winning oral history organization StoryCorps to document the experiences of Oregonians involved in social and environmental justice movements.’

The museum’s project, titled Oregon Stories: Speaking of Justice, will bring StoryCorps to campus this week to record conversations between 15 participant pairs who will discuss their work in civil rights, climate stewardship, indigenous cultural justice, educational equity and more.


Publisher: Around the O
Date: 2019-04-24T11:12:16-07:00
Reference: Visit Source

Happening on Twitter

Greetings Earthlings: There is no spoon or AI. The data presented above may one day be zapped to another dimension. Just thought you should be aware. Dude, there was a blue light over there just now.