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=== April 28 ===
=== May 3 ===


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[[File:Isaac Barrow - Lectiones habitae in scholiis publicis academiae Cantabrigiensis AD 1664, 1683 - 48461.jpg|thumb|175px|link=Isaac Barrow (nonfiction)|''Lectiones habitae in scholiis publicis academiae Cantabrigiensis AD 1664'' by [[Isaac Barrow (nonfiction)|Isaac Barrow]].]]
<span style="font-weight:bold">Are You Sure ... (May 3, 2020)</span>


[[File:Adele and Kurt (cropped).jpg|thumb|175px|link=Kurt Gödel (nonfiction)|[[Kurt Gödel (nonfiction)|Adele Porkert and Kurt Gödel]] in Vienna during their courtship (mid-1930s).<br><br>The text under the [[:File:Adele and Kurt.jpg|complete photograph]] reads:<br>"Adele Porkert and Gödel were an unlikely but devoted couple. This photograph, taken at an outdoor Viennese cafe, is from the period of their long courtship.  Porkert shielded Gödel from the worst of his irrational fears, and was often the only person who could persuade him to eat. More than anyone else, she was responsible for keeping him alive and productive."<br><br>After his wife's hospitalization in 1977, Gödel stopped eating and starved to death.]]
• ... that mathematician and theologian '''[[Isaac Barrow (nonfiction)|Isaac Barrow]]''' (1630–1677) was known for his courage, and that he once saved the ship he was on from capture by pirates?
<span style="font-weight:bold">Are You Sure ... (April 28, 2020)</span>


• ... that logician, mathematician, and analytic philosopher '''[[Kurt Gödel (nonfiction)|Kurt Gödel]]''' (1906–1978) shocked his colleagues when he used [[Mathematical logic (nonfiction)|mathematical logic]] to prove that mathematical logic (which might be thought of as the science of being certain) is inherently subject to uncertainty; that Gödel's work shook mathematics to its [[Foundations of mathematics (nonfiction)|foundations]], establishing fundamental principles of modern thought; and that Gödel suffered periods of mental instability and illness, with an obsessive fear of being poisoned, eventually eating only food that his wife, Adele, prepared for him; and that after her hospitalization in 1977, when she could no longer prepare her husband's meals, he starved to death?
• ... that '''''[[neutonianismo]]''''' is a group of various folk dances characterized by a fast upbeat tempo, usually in 6/8 time (sometimes 12/8 or 4/4), accompanied by tambourines, related to the better known ''[[Tarantella (nonfiction)|tarantella]]''; and that <i><nowiki>tarantella</nowiki></i>'s supposed association with [[Tarantism (nonfiction)|dancing mania caused by spider bites]] is similar to ''[[neutonianismo]]'''s popular association with dancing mania caused by the physics of Sir [[Isaac Newton (nonfiction)|Isaac Newton]]?


• ... that physicist and engineer '''[[Rolf Landauer (nonfiction)|Rolf Landauer]]''' (1927–1999) made important contributions to the thermodynamics of information processing, including the principle that in any logically irreversible operation that manipulates information, such as erasing a bit of memory, [[Entropy (nonfiction)|entropy]] increases and an associated amount of energy is dissipated as heat, a phenomenon now known as [[Landauer's principle (nonfiction)|Landauer's principle]]?
• ... that mathematician '''[[Jacques-Louis Lions (nonfiction)|Jacques-Louis Lions]]''' (1928–2001) championed the application of mathematics in industry, with a particular involvement in the French space program, as well as in domains such as energy and the environment, and that he was the director of the ''Centre National d'Etudes Spatiales'' ([[CNES (nonfiction)|CNES]]) from 1984 to 1992?


• ... that '''[[Geometrical frustration (nonfiction)|geometrical frustration]]''' (or simply '''frustration''') is a phenomenon in condensed matter physics where atoms tend to stick to non-trivial positions or where, on a regular crystal lattice, conflicting inter-atomic forces (each one favoring rather simple, but different structures) lead to quite complex structures, and that as a consequence of the frustration in the geometry or in the forces, a plenitude of distinct [[Ground state (nonfiction)|ground states]] may result at zero temperature, and usual thermal ordering may be suppressed at higher temperatures?
• ... that wealthy Venetian polymath '''[[Francesco Algarotti (nonfiction)|Francesco Algarotti]]''' (1712–1764) was made a fellow of the Royal Society in 1736, and that while in London he became embroiled in a lively bisexual love-triangle with the politician [[John Hervey, 2nd Baron Hervey (nonfiction)|John Hervey]] and [[Lady Mary Wortley Montagu (nonfiction)|Lady Mary Wortley Montagu]];  and that Algarotti left England for Italy, where he finished ''Neutonianismo per le dame'' ("Newtonism for Ladies", 1737), a book written for women about [[Isaac Newton (nonfiction)|Isaac Newton]]'s work on optics, dedicated to [[Bernard Le Bovier de Fontenelle (nonfiction)|Bernard le Bovier de Fontenelle]]?
 
• ... that mathematician '''[[Leopold Kronecker (nonfiction)|Leopold Kronecker]]''' (1823–1891) was quoted by [[Heinrich Martin Weber (nonfiction)|Heinrich Martin Weber]] (1893): "Die ganzen Zahlen hat der liebe Gott gemacht, alles andere ist Menschenwerk" ("God made the [[Integer (nonfiction)|integers]], all else is the work of man")?
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=== May 2 ===
=== April 27 ===


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[[File:John Ehrlichman (1969).png|thumb|175px|link=John Ehrlichman (nonfiction)|"The Nixon campaign in 1968, and the Nixon White House after that, had two enemies: the antiwar left and black people. You understand what I’m saying? We knew we couldn’t make it illegal to be either against the war or black, but by getting the public to associate the hippies with marijuana and blacks with heroin, and then criminalizing both heavily, we could disrupt those communities. We could arrest their leaders, raid their homes, break up their meetings, and vilify them night after night on the evening news. Did we know we were lying about the drugs? Of course we did."<br>—'''[[John Ehrlichman (nonfiction)|John Ehrlichman]]''', White House counsel and presidential aide, quoted in "Legalize it all", Harper's Magazine, April 2016.]]
[[File:Transformation_of_Argyropelecus_olfersi_into_Sternoptyx_diaphana.jpg|thumb|175px|link=D'Arcy Wentworth Thompson (nonfiction)|[[D'Arcy Wentworth Thompson (nonfiction)|D'Arcy Wentworth Thompson]] illustrated the transformation of ''Argyropelecus olfersi'' into ''Sternoptyx diaphana'' by applying a 20° [[Shear mapping (nonfiction)|shear mapping]].]]
<span style="font-weight:bold">Are You Sure ... (April 27, 2020)</span>
<span style="font-weight:bold">Are You Sure ... (May 2, 2020)</span>
 
• ... that former White House counsel and Presidential aide '''[[John Ehrlichman (nonfiction)|John D. Ehrlichman]]''' (b. 1925) was released from an Arizona prison on this day in 1978 after serving eighteen months for [[Watergate scandal (nonfiction)|Watergate]]-related crimes?
 
• ... that painter and inventor '''[[Samuel Morse (nonfiction)|Samuel Morse]]''' (1791–1872) met artist and pioneering photographer [[Louis Daguerre (nonfiction)|Louis Daguerre]] in 1839 while visiting Paris, and that Morse become interested in the daguerreotype (the first practical means of photography), writing a letter to the ''New York Observer'' describing the invention; and that [[Mathew Brady (nonfiction)|Mathew Brady]], one of the earliest photographers in American history, famous for his depictions of the American Civil War, studied under Morse and later took photographs of him?
 
• ... that mathematician '''[[Paul Gordon (nonfiction)|Paul Gordan]]''' (1837–1912) encouraged fellow mathematician [[David Hilbert (nonfiction)|David Hilbert]] and used Hilbert's results and methods, and the widespread story that Gordon opposed [[David Hilbert (nonfiction)|David Hilbert]]'s work on invariant theory is a myth, although Gordon did correctly point out in a referee's report that some of the reasoning in Hilbert's paper was incomplete; and that Gordon is famously quoted (or misquoted — it is not clear if Gordan really said this, nor is it clear whether the quote was intended as criticism, or praise, or a subtle joke) as saying of Hilbert's proof of [[Hilbert's basis theorem (nonfiction)|Hilbert's basis theorem]]: "This is not mathematics; this is theology."?
 
• ... that a '''[[Nomogram (nonfiction)|nomogram]]''' (from Greek νόμος ''nomos'', "law" and γραμμή ''grammē'', "line"), also called a nomograph, alignment chart, or abaque, is a graphical calculating device consisting of a set of two or more scales (one for each variable in an equation), and a straight line (either drawn or virtual) called an index line or isopleth, which is drawn across the scales; and that (1) knowing the values of all but one variable, the value of the unknown variable can be found, and (2) by fixing the values of some variables, the relationship between the unfixed ones can be studied?
 
• ... that physicist and space activist '''[[Gerard K. O'Neill (nonfiction)|Gerard K. O'Neill]]''' (1927–1992) graduated from high school in 1944, then enlisted in the United States Navy on his 17th birthday, and that the Navy trained O'Neill as a radar technician, sparking his interest in science?
 
• ... that biochemist and crystallographer '''[[John Kendrew (nonfiction)|John Kendrew]]''' (1917–1997) investigated the structure of heme-containing proteins, sharing the 1962 Nobel Prize for chemistry with [[Max Perutz (nonfiction)|Max Perutz]] for determining the atomic structures of proteins using X-ray crystallography; and that Kendrew's initial source of raw material for myoglobin was horse heart, but the myoglobin crystals thus obtained were too small for X-ray analysis so Kendrew then used whale meat, reasoning that the oxygen-conserving tissue of diving mammals could contain larger crystals?
 
• ... that the '''[[Fugu squash]]''' is a genetically engineered hybrid of the fugu fish and any of various types of squash, and that it was created as a vegan delicacy for high-end sushi restaurants?
 
• ... that author, mathematician, scientist, political activist, and educator '''[[Irving Adler (nonfiction)|Irving Adler]]''' (1913–2012) turned his attention, in the late 1970s, to the question of [[Phyllotaxis (nonfiction)|phyllotaxis]], specifically to the arrangement of plant spirals according to the [[Fibonacci sequence (nonfiction)|Fibonacci sequence]], and that his papers in the ''Journal of Theoretical Biology'' stimulated a revival of interest in the subject?
<div style="font-size:90%;letter-spacing:.4rem;float:right;color:#555555">GnomonChronicles.com</div>
 
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=== April 26 ===
• ... that biologist, mathematician, and classics scholar Sir '''[[D'Arcy Wentworth Thompson (nonfiction)|D'Arcy Wentworth Thompson]]''' (1860–1948) was a pioneer of [[Mathematical and theoretical biology (nonfiction)|mathematical biology]]; and that his book ''[[On Growth and Form (nonfiction)|On Growth and Form]]'' (1917) led the way for the scientific explanation of [[Morphogenesis (nonfiction)|morphogenesis]], the process by which patterns are formed in plants and animals; and that Thompson's lyrical explication of the mathematical beauty of nature has charmed countless scientists and artists, including [[Alan Turing (nonfiction)|Alan Turing]], [[Henry Moore (nonfiction)|Henry Moore]], Barbara Hepworth, Salvador Dalí, [[Claude Lévi-Strauss (nonfiction)|Claude Lévi-Strauss]], Jackson Pollock, and [[Richard Hamilton (nonfiction)|Richard Hamilton]]?


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• ... that polymath '''[[Athanasius Kircher (nonfiction)|Athanasius Kircher]]''' (1602–1680) was one of the first people to observe [[Microorganism (nonfiction)|microorganisms]] through a [[Microscope (nonfiction)|microscope]], and that Kircher was ahead of his time in proposing that the plague was caused by an [[Pathogen (nonfiction)|infectious microorganism]] and in suggesting effective measures to prevent the spread of the disease?
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<span style="font-size:90%;letter-spacing:.4rem">GNOMON CHRONICLES</span>
[[File:Chernobyl_disaster_radiation_map.jpg|thumb|175px|link=Chernobyl disaster (nonfiction)|Map of radiation from the [[Chernobyl disaster (nonfiction)|Chernobyl disaster]].<br><br>Contamination from the Chernobyl disaster was scattered irregularly depending on weather conditions, much of it deposited on mountainous regions such as the Alps, the Welsh mountains and the Scottish Highlands, where [[Adiabatic process (nonfiction)|adiabatic cooling]] caused radioactive rainfall. The resulting patches of contamination were often highly localized, and water-flows across the ground contributed further to large variations in radioactivity over small areas. Sweden and Norway also received heavy fallout when the contaminated air collided with a cold front, bringing rain. There was also groundwater contamination.]]
<span style="font-weight:bold">Are You Sure ... (April 26, 2020)</span>


• ... that the '''[[Chernobyl disaster (nonfiction)|Chernobyl disaster began on Saturday 26 April 1986 with an uncontrolled nuclear chain reaction]]''' caused by a combination of unstable conditions and reactor design flaws; and that the chain reaction rapidly released of a large amount of energy which vaporized superheated cooling water, ruptured the reactor core in a highly destructive steam explosion, and ignited an open-air reactor core fire; and that airborne radiation contaminated parts of the USSR and western Europe?
• ... that the '''[[Deep scattering layer (nonfiction)|deep scattering layer]]''' is a layer in the ocean consisting of millions of marine organisms was discovered through [[Sonar (nonfiction)|sonar]], as ships found a layer that scattered the sound and was thus sometimes mistaken for the seabed, and that the layer includes larger numbers of small [[Mesopelagic zone (nonfiction)|mesopelagic fish]] with swimbladders that reflect sonar, and that the layer is deeper when the [[Moon (nonfiction)|moon]] is out, and can become shallower when clouds pass over the moon?


• ... that the United States '''[[Castle Union (nonfiction)|detonated the Castle Union nuclear test weapon on April 26, 1954 at Bikini atoll in the Marshall Islands]]''', leaving a crater 910 meters in diameter and 27 meters deep; that sixty-seven nuclear weapons were detonated in the Marshalls over twelve years; and that just one of over sixty islands has been cleaned by the US government, and that the inhabitants of the Marshalls are still waiting for the two billion dollars in compensation assessed by the Nuclear Claims Tribunal, and that many of the islanders and their descendants still live in exile, as the islands remain contaminated with high levels of radiation?
• ... that mathematician, physicist, astronomer, and academic '''[[John Winthrop (scientist) (nonfiction)|John Winthrop]]''' (1714–1779) attempted to explain the [[1755 Lisbon earthquake (nonfiction)|great Lisbon earthquake of 1755]] as a scientific (rather than religious) phenomenon, and that Winthrop was a pioneer of seismology, applying mathematical [[Computation (nonfiction)|computation]] to earthquake activity?


• ... that philosopher '''[[Edmund Husserl (nonfiction)|Edmund Husserl]]''' (1859–1938) established [[Phenomenology (nonfiction)|phenomenology]] as school of thought; that in his early work, he elaborated critiques of historicism and of psychologism in logic based on analyses of intentionality; and that in his mature work, Husserl developed a systematic foundational science based on phenomenological reduction, arguing that transcendental consciousness sets the limits of all possible knowledge?
• ... that '''[[Mesopelagium]]''' is an oceanographer-run restaurant specializing in seafood from the [[Mesopelagic zone (nonfiction)|mesopelagic zone]], including bristlemouths, blobfish, [[Bioluminescence (nonfiction)|bioluminescent]] jellyfish, giant squid, and a myriad of other unique organisms adapted to live in a low-light environment; and that all of the seafood served in Mesopelagium is raised responsibly in cruelty-free underground [[Aquaculture (nonfiction)|aquaculture]] tanks which provide the high-pressure, low-light environment necessary to culture mesopelagic organisms?


• ... that physician '''[[Jean Fernel (nonfiction)|Jean François Fernel]]''' (1497–1558) suggested that taste buds are sensitive to fat, an idea which research in the early 21st Century proved to be correct?
<div style="font-size:90%;letter-spacing:.4rem;float:right;color:#555555">GnomonChronicles.com</div>
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Latest revision as of 16:27, 25 September 2020

Are You Sure? is a feature of the Gnomon Chronicles.

See also Are You Sure? (archive) (nonfiction)

Work in progress

May 3




GNOMON CHRONICLES

Lectiones habitae in scholiis publicis academiae Cantabrigiensis AD 1664 by Isaac Barrow.

Are You Sure ... (May 3, 2020)

• ... that mathematician and theologian Isaac Barrow (1630–1677) was known for his courage, and that he once saved the ship he was on from capture by pirates?

• ... that neutonianismo is a group of various folk dances characterized by a fast upbeat tempo, usually in 6/8 time (sometimes 12/8 or 4/4), accompanied by tambourines, related to the better known tarantella; and that tarantella's supposed association with dancing mania caused by spider bites is similar to neutonianismo's popular association with dancing mania caused by the physics of Sir Isaac Newton?

• ... that mathematician Jacques-Louis Lions (1928–2001) championed the application of mathematics in industry, with a particular involvement in the French space program, as well as in domains such as energy and the environment, and that he was the director of the Centre National d'Etudes Spatiales (CNES) from 1984 to 1992?

• ... that wealthy Venetian polymath Francesco Algarotti (1712–1764) was made a fellow of the Royal Society in 1736, and that while in London he became embroiled in a lively bisexual love-triangle with the politician John Hervey and Lady Mary Wortley Montagu; and that Algarotti left England for Italy, where he finished Neutonianismo per le dame ("Newtonism for Ladies", 1737), a book written for women about Isaac Newton's work on optics, dedicated to Bernard le Bovier de Fontenelle?

GnomonChronicles.com


May 2




GNOMON CHRONICLES

D'Arcy Wentworth Thompson illustrated the transformation of Argyropelecus olfersi into Sternoptyx diaphana by applying a 20° shear mapping.

Are You Sure ... (May 2, 2020)

• ... that biologist, mathematician, and classics scholar Sir D'Arcy Wentworth Thompson (1860–1948) was a pioneer of mathematical biology; and that his book On Growth and Form (1917) led the way for the scientific explanation of morphogenesis, the process by which patterns are formed in plants and animals; and that Thompson's lyrical explication of the mathematical beauty of nature has charmed countless scientists and artists, including Alan Turing, Henry Moore, Barbara Hepworth, Salvador Dalí, Claude Lévi-Strauss, Jackson Pollock, and Richard Hamilton?

• ... that polymath Athanasius Kircher (1602–1680) was one of the first people to observe microorganisms through a microscope, and that Kircher was ahead of his time in proposing that the plague was caused by an infectious microorganism and in suggesting effective measures to prevent the spread of the disease?

• ... that the deep scattering layer is a layer in the ocean consisting of millions of marine organisms was discovered through sonar, as ships found a layer that scattered the sound and was thus sometimes mistaken for the seabed, and that the layer includes larger numbers of small mesopelagic fish with swimbladders that reflect sonar, and that the layer is deeper when the moon is out, and can become shallower when clouds pass over the moon?

• ... that mathematician, physicist, astronomer, and academic John Winthrop (1714–1779) attempted to explain the great Lisbon earthquake of 1755 as a scientific (rather than religious) phenomenon, and that Winthrop was a pioneer of seismology, applying mathematical computation to earthquake activity?

• ... that Mesopelagium is an oceanographer-run restaurant specializing in seafood from the mesopelagic zone, including bristlemouths, blobfish, bioluminescent jellyfish, giant squid, and a myriad of other unique organisms adapted to live in a low-light environment; and that all of the seafood served in Mesopelagium is raised responsibly in cruelty-free underground aquaculture tanks which provide the high-pressure, low-light environment necessary to culture mesopelagic organisms?

GnomonChronicles.com


On This Day


GNOMON CHRONICLES

On This Day in History and Fiction: April 18

  • 1796: Physicist Johan Carl Wilcke dies. Wilcke invented the electrophorus, and calculated the latent heat of ice.

    1796: Physicist Johan Carl Wilcke dies. Wilcke invented the electrophorus, and calculated the latent heat of ice.

  • 1873: Chemist and academic Justus von Liebig dies. Von Liebeg made pioneering contributions to organic chemistry, especially agricultural and biological chemistry; he is known as the "Father of the fertilizer industry".

    1873: Chemist and academic Justus von Liebig dies. Von Liebeg made pioneering contributions to organic chemistry, especially agricultural and biological chemistry; he is known as the "Father of the fertilizer industry".

  • 1907: Jazz drummer and theoretical physicist Albert Einstein hosts an all-star benefit concert to raise money for the rebuilding of San Francisco.

    1907: Jazz drummer and theoretical physicist Albert Einstein hosts an all-star benefit concert to raise money for the rebuilding of San Francisco.

  • 1955: Physicist, engineer, and academic Albert Einstein dies. Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).

    1955: Physicist, engineer, and academic Albert Einstein dies. Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).

  • 2011: Mathematician Curt Meyer dies. Meyer made notable contributions to number theory, including an alternative solution to the class number 1 problem, building on the original Stark–Heegner theorem.

    2011: Mathematician Curt Meyer dies. Meyer made notable contributions to number theory, including an alternative solution to the class number 1 problem, building on the original Stark–Heegner theorem.

GNOMONCHRONICLES.COM


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