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π Star Lifting
Star lifting is any of several hypothetical processes by which a sufficiently advanced civilization (specifically, one of Kardashev-II or higher) could remove a substantial portion of a star's matter which can then be re-purposed, while possibly optimizing the star's energy output and lifespan at the same time. The term appears to have been coined by David Criswell.
Stars already lose a small flow of mass via solar wind, coronal mass ejections, and other natural processes. Over the course of a star's life on the main sequence this loss is usually negligible compared to the star's total mass; only at the end of a star's life when it becomes a red giant or a supernova is a large proportion of material ejected. The star lifting techniques that have been proposed would operate by increasing this natural plasma flow and manipulating it with magnetic fields.
Stars have deep gravity wells, so the energy required for such operations is large. For example, lifting solar material from the surface of the Sun to infinity requires 2.1 Γ 1011 J/kg. This energy could be supplied by the star itself, collected by a Dyson sphere; using 10% of the Sun's total power output would allow 5.9 Γ 1021 kilograms of matter to be lifted per year (0.0000003% of the Sun's total mass), or 8% of the mass of Earth's moon.
π Project Xanadu
Project Xanadu ( ZAN-Ι-doo) was the first hypertext project, founded in 1960 by Ted Nelson. Administrators of Project Xanadu have declared it an improvement over the World Wide Web, with the mission statement: "Today's popular software simulates paper. The World Wide Web (another imitation of paper) trivialises our original hypertext model with one-way ever-breaking links and no management of version or contents."
Wired magazine published an article called "The Curse of Xanadu", calling Project Xanadu "the longest-running vaporware story in the history of the computer industry". The first attempt at implementation began in 1960, but it was not until 1998 that an incomplete implementation was released. A version described as "a working deliverable", OpenXanadu, was made available in 2014.
Discussed on
- "Project Xanadu" | 2021-02-21 | 132 Upvotes 82 Comments
π Plant Blindness
Plant blindness is an informally-proposed form of cognitive bias, which in its broadest meaning, is a human tendency to ignore plant species. This includes such phenomena as not noticing plants in the surrounding environment, not recognizing the importance of plant life to the whole biosphere and to human affairs, a philosophical view of plants as an inferior form of life to animals and/or the inability to appreciate the unique features or aesthetics of plants.
The term was coined by the botanists and biology educators J. H. Wandersee and E. E. Schussler in their 1999 publication 'Preventing Plant Blindness'. Scientists have suggested that the reason some people don't notice plants is because plants are stationary and similarly coloured, although other research has suggested that plant blindness is affected by cultural practices. A US study looked at how plants and animals are perceived using "attentional blink" (the ability to notice one of two rapidly presented images). The study showed that participants were more accurate in detecting animals in images, rather than plants. The researchers also suggested possible strategies for characterizing and overcoming zoo-centrism.
According to the BBC journalist Christine Ro, plant blindness is potentially linked to nature deficit disorder, which she construes is causing what she claims is reduced funding and fewer classes for botany.
The term was coined in 1999 by botanists James Wandersee and Elisabeth Schussler.
Discussed on
- "Plant Blindness" | 2021-02-18 | 61 Upvotes 29 Comments
π Who put Bella in the Wych Elm?
Who put Bella down the Wych Elm? is graffiti that appeared in 1944 following the 1943 discovery by four children of the skeletonised remains of a woman inside a wych elm in Hagley Wood, Hagley (located in the estate of Hagley Hall), in Worcestershire, England. The victimβwhose murder is approximated to have occurred in 1941βremains unidentified, and the current location of her skeleton and autopsy report is unknown.
Discussed on
- "Who put Bella in the Wych Elm?" | 2021-02-15 | 21 Upvotes 3 Comments
π List of Leaf Vegetables
This is a list of vegetables which are grown or harvested primarily for the consumption of their leafy parts, either raw or cooked. Many plants with leaves that are consumed in small quantities as a spice such as oregano, for medicinal purposes such as lime, or used in infusions such as tea, are not included in this list.
Discussed on
- "List of Leaf Vegetables" | 2021-02-14 | 38 Upvotes 21 Comments
π Banned in Boston
"Banned in Boston" was a phrase employed from the late 19th century through the mid-20th century, to describe a literary work, song, motion picture, or play which had been prohibited from distribution or exhibition in Boston, Massachusetts. During this period, Boston officials had wide authority to ban works featuring "objectionable" content, and often banned works with sexual content or foul language. This even extended to the $5 bill from the 1896 "Educational" series of banknotes featuring allegorical figures which were partially nude.
Discussed on
- "Banned in Boston" | 2021-02-14 | 100 Upvotes 79 Comments
π One address is home to 285,000 US businesses, including Apple and Google
The Corporation Trust Center, 1209 North Orange Street, is a single-story building located in the Brandywine neighborhood of Wilmington, Delaware, USA, operated by CT Corporation, a subsidiary of Dutch multinational services firm Wolters Kluwer. This is CT Corporation's location in the state of Delaware for providing "registered agent services." In 2012 it was the registered agent address of at least 285,000 separate businesses.
Many companies are incorporated in Delaware for its business-friendly General Corporation Law and it was estimated in 2012 that 9.5 billion dollars of potential taxes had not been levied over the past decade, due to an arrangement known as the "Delaware loophole." Companies formed in Delaware are required to have an address in the state at which process may be served. Therefore, Delaware entities with no physical office in the state must have a registered agent with a Delaware address. Notable companies represented by CT at this location include Google, American Airlines, Apple Inc., General Motors, The Coca-Cola Company, Walmart, Yum! Brands, Verizon, and about 430 of Deutsche Bank's more than 2,000 subsidiary companies and special purpose companies. Both Former President of the United States Donald Trump, and his opponent in the 2016 United States presidential election, Hillary Clinton, have registered companies at the center.
Discussed on
- "One address is home to 285,000 US businesses, including Apple and Google" | 2021-02-11 | 24 Upvotes 3 Comments
π Pravetz Computers
Pravetz (ΠΡΠ°Π²Π΅Ρ in the original Cyrillic, series 8 and series 16) were Bulgarian computers, manufactured mainly in the town of Pravetz. Some components and software were produced in Stara Zagora, Plovdiv, and other Bulgarian cities.
Discussed on
- "Pravetz Computers" | 2021-02-11 | 171 Upvotes 50 Comments
π List of Generic and Genericized Trademarks
The following three lists of generic and genericized trademarks are:
- marks which were originally legally protected trademarks, but have been genericized and have lost their legal status due to becoming generic terms,
- marks which have been abandoned and are now generic terms
- marks which are still legally protected as trademarks, at least in some jurisdictions
Discussed on
- "List of Generic and Genericized Trademarks" | 2021-02-11 | 12 Upvotes 3 Comments
π Cable Bacteria
Cable bacteria are filamentous bacteria that conduct electricity across distances over 1Β cm in sediment and groundwater aquifers. Cable bacteria allow for long distance electron transport, which connects electron donors to electron acceptors, connecting previously separated oxidation and reduction reactions. Cable bacteria couple the reduction of oxygen or nitrate at the sediment's surface to the oxidation of sulfide in the deeper, anoxic, sediment layers.
Discussed on
- "Cable Bacteria" | 2021-02-10 | 22 Upvotes 2 Comments