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🔗 India 🔗 Visual arts 🔗 India/Kerala

The Padmanabhaswamy temple treasure is a collection of valuable objects including gold thrones, crowns, coins, statues and ornaments, diamonds and other precious stones. It was discovered in some of the subterranean vaults of the Padmanabhaswamy Temple in Thiruvananthapuram, in the Indian state of Kerala, when five of its six (or possibly eight) vaults were opened on 27 June 2011. The vaults were opened on the orders of the Supreme Court of India, which was hearing a private petition seeking transparency in the running of the temple. The discovery of the treasure attracted widespread national and international media attention as it is considered to be the largest collection of items of gold and precious stones in the recorded history of the world. On the possibility of future appropriation of the wealth, for the need of a new management and proper inventorisation of the articles in the vaults, a public interest petition was registered with Supreme court of India. In 2020, the royal family won the rights to manage the temple, as well all its financial aspects. The Supreme Court of India overruled the Kerala High Court's legal jurisprudence based on regional facts and recognition of the nullified princely agreement based on "Ruler of Travancore."

🔗 Technology

A Tesla valve, called by Tesla a valvular conduit, is a fixed-geometry passive check valve. It allows a fluid to flow preferentially in one direction, without moving parts. The device is named after Nikola Tesla, who was awarded U.S. Patent 1,329,559 in 1920 for its invention. The patent application describes the invention as follows:

The interior of the conduit is provided with enlargements, recesses, projections, baffles, or buckets which, while offering virtually no resistance to the passage of the fluid in one direction, other than surface friction, constitute an almost impassable barrier to its flow in the opposite direction.

Tesla illustrates this with the drawing, showing one possible construction with a series of eleven flow-control segments, although any other number of such segments could be used as desired to increase or decrease the flow regulation effect.

One computational fluid dynamics simulation of Tesla valves with two and four segments showed that the flow resistance in the blocking (or reverse) direction was about 15 and 40 times greater, respectively, than the unimpeded (or forward) direction. This lends support to Tesla's patent assertion that in the valvular conduit in his diagram, a pressure ratio "approximating 200 can be obtained so that the device acts as a slightly leaking valve".

The Tesla valve is used in microfluidic applications and offers advantages such as scalability, durability, and ease of fabrication in a variety of materials.

🔗 Spaceflight

A porkchop plot (also pork-chop plot) is a chart that shows contours of equal characteristic energy (C₃) against combinations of launch date and arrival date for a particular interplanetary flight.

By examining the results of the porkchop plot, engineers can determine when launch opportunities exist (a launch window) that is compatible with the capabilities of a particular spacecraft. A given contour, called a porkchop curve, represents constant C₃, and the center of the porkchop the optimal minimum C₃. The orbital elements of the solution, where the fixed values are the departure date, the arrival date, and the length of the flight, were first solved mathematically in 1761 by Johann Heinrich Lambert, and the equation is generally known as Lambert's problem (or theorem).

🔗 Internet 🔗 Software 🔗 Software/Computing 🔗 Maps

Yahoo! Pipes was a web application from Yahoo! that provided a graphical user interface for building data mashups that aggregate web feeds, web pages, and other services, creating Web-based apps from various sources, and publishing those apps. The application worked by enabling users to "pipe" information from different sources and then set up rules for how that content should be modified (for example, filtering). Other than the pipe editing page, the website had a documentation page and a discussion page. The documentation page contained information about pipes including guides for the pipe editor and troubleshooting. The discussion page enabled users to discuss the pipes with other users.

🔗 Glass

Uranium glass is glass which has had uranium, usually in oxide diuranate form, added to a glass mix before melting for coloration. The proportion usually varies from trace levels to about 2% uranium by weight, although some 20th-century pieces were made with up to 25% uranium.

Uranium glass was once made into tableware and household items, but fell out of widespread use when the availability of uranium to most industries was sharply curtailed during the Cold War in the 1940s to 1990s. Most such objects are now considered antiques or retro-era collectibles, although there has been a minor revival in art glassware. Otherwise, modern uranium glass is now mainly limited to small objects like beads or marbles as scientific or decorative novelties.

Bohm Dialogue (also known as Bohmian Dialogue or "Dialogue in the Spirit of David Bohm") is a freely flowing group conversation in which participants attempt to reach a common understanding, experiencing everyone's point of view fully, equally and nonjudgementally. This can lead to new and deeper understanding. The purpose is to solve the communication crises that face society, and indeed the whole of human nature and consciousness. It utilizes a theoretical understanding of the way thoughts relate to universal reality. It is named after physicist David Bohm who originally proposed this form of dialogue.

🔗 Human rights 🔗 Bible 🔗 England

Select Parts of the Holy Bible for the use of the Negro Slaves in the British West-India Islands, sometimes referred to as a slave bible, is an abbreviated version of the Bible specifically made for teaching a pro-slavery version of Christianity to enslaved people in the British West Indies.

🔗 Sweden 🔗 Scouting

The Wallenberg family are a prominent Swedish family, Europe's pre-eminent, most powerful business family and dynasty, renowned as bankers, industrialists, politicians, bureaucrats, and diplomats.

The Wallenberg sphere's holdings employ about 600,000 people and have sales of $154 billion a year.

The Wallenberg empire consists of 16 Wallenberg Foundations, Foundation Asset Management (FAM), Investor AB, Patricia Industries and Wallenberg Investments AB.

The Wallenbergs control and are majority owners of most large Swedish industrial groups, such as world leading telecommunication multinational Ericsson, Scandinavian and Baltic bank giant Skandinaviska Enskilda Banken, one of the world's largest paper and pulp multinationals Stora Enso, Wärtsilä, world's second largest appliance maker Electrolux, one of the world's largest power, automation and robotics multinationals ABB, one of Europe's largest aerospace and arms manufacturers SAAB, SAS Group, world's largest ball-bearing company SKF, Atlas Copco, pharmaceutical multinational Astra Zeneca, Nasdaq, Inc., Husqvarna, the Stockholm football club AIK, investment company Investor AB, the Grand Group hotel, BraunAbility, Epiroc, world's largest powdered metal company Höganäs AB, IPCO, Laborie, EQT Partners, Nefab, Permobil, Piab, Sobi, Sarnova, 3 Scandinavia, Kopparfors Skogar, Hylte Bruk AB and so on.

Former holdings include among others Scania AB and Saab Automobile.

In the 1970s, the Wallenberg family businesses employed 40% of Sweden's industrial workforce and represented 40% of the total worth of the Stockholm stock market.

Wallenbergs, through the Knut and Alice Wallenberg Foundation, allocate annually SEK 2 billion to science and research, which makes the Knut and Alice Wallenberg Foundation one of the largest private research foundations in Europe, and has, until 2020, awarded SEK 31.2 billion in grants.

The most famous of the Wallenbergs, Raoul Wallenberg, a diplomat, worked in Budapest, Hungary, during World War II to rescue Jews from the Holocaust. Between July and December 1944, he issued protective passports and housed Jews, saving tens of thousands of Jewish lives.

🔗 Plants

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.

🔗 Novels 🔗 Philosophy 🔗 Philosophy/Philosophical literature 🔗 Books 🔗 Philosophy/Medieval philosophy

Ḥayy ibn Yaqẓān (Arabic: حي بن يقظان, lit. 'Alive son of Awake'; also known as Hai Eb'n Yockdan) is an Arabic philosophical novel and an allegorical tale written by Ibn Tufail (c. 1105 – 1185) in the early 12th century in Al-Andalus. Names by which the book is also known include the Latin: Philosophus Autodidactus ('The Self-Taught Philosopher'); and English: The Improvement of Human Reason: Exhibited in the Life of Hai Ebn Yokdhan. Ḥayy ibn Yaqẓān was named after an earlier Arabic philosophical romance of the same name, written by Avicenna during his imprisonment in the early 11th century, even though both tales had different stories. The novel greatly inspired Islamic philosophy as well as major Enlightenment thinkers. It is the third most translated text from Arabic, after the Quran and the One Thousand and One Nights.