# kb

id: photochemical-action-plots-20260505-0
file: data/en.wikipedia.org/wiki/Photochemical_action_plots-0.md
category: reference
title: Photochemical action plots
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Photochemical_action_plots
date_saved: 2026-05-05T03:00:01.563042+00:00
instance: kb-cron
parent: photochemical-action-plots-20260505-0
summary:
  Photochemical action plots are a scientific tool used to understand the effects of different wavelengths of light on photochemical reactions. The methodology involves exposing a reaction solution to the same number of photons at varying monochromatic wavelengths, monitoring the conversion or reaction yield of starting materials and/or reaction products. Such global high-resolution analysis of wavelength-dependent chemical reactivity has revealed that maxima in absorbance and reactivity often do not align. Photochemical action plots are historically connected to (biological) action spectra. == Historical development == The study of biological responses to specific wavelengths dates back to the late 19th century. Research primarily focused on assessing photodamage from solar radiation using broad-band lamps and narrow filters. These studies quantified effects such as cell viability, production of erythema, vitamin D3 degradation, DNA changes, and skin cancer appearance. The first biological action spectrum was recorded by Engelmann, who used a prism to produce different colors of light and then illuminated cladophora in a bacteria suspension. He discovered the effects of different light wavelengths on photosynthesis, marking the first recorded action spectrum of photosynthesis. Critical evaluations of active wavelength regions in these studies helped identify contributing chromophores to processes such as photosynthesis. These chromophores are key


id: list-of-science-magazines-20260505-0
file: data/en.wikipedia.org/wiki/List_of_science_magazines-0.md
category: reference
title: List of science magazines
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_science_magazines
date_saved: 2026-05-05T03:00:03.262096+00:00
instance: kb-cron
parent: list-of-science-magazines-20260505-0
summary:
  A science magazine is a periodical publication with news, opinions, and reports about science, generally written for a non-expert audience. In contrast, a periodical publication, usually including primary research and/or reviews, that is written by scientific experts is called a "scientific journal". Science magazines are read by non-scientists and scientists who want accessible information on fields outside their specialization. Articles in science magazines are sometimes republished or summarized by the general press. == Examples of general science magazines == === Africa === === Asia === ==== Bangladesh ==== Byapon – Youth Science Magazine in Bengali Bigganchinta[1] BigganBarta (বিজ্ঞানবার্তা) – Free PDF Science Magazine in Bengali Bangachi (ব্যাঙাচি) – Free Science Magazine in Bengali published by Banger Chhater Biggan Biggan Ananda (বিজ্ঞান আনন্দ) - Published by Bangladesh Science Fiction Society (BSFS) Zero to Infinity (জিরো টু ইনফিনিটি) ==== India ==== Resonance, published by Indian Academy of Sciences Current Science Dream 2047, published by Vigyan Prasar Jnan o Bijnan, published by Bangiya Bijnan Parishad Sandarbh Science Reporter Safari ==== Japan ==== Newton press Nikkei Science ==== Kazakhstan ==== OYLA ==== Pakistan ==== Global Science ==== South Korea ==== Donga Science ==== Turkey ==== Bilim ve Teknik === Europe === EuroScientist ==== Austria


id: science-and-technology-in-the-discovery-of-america-20260505-0
file: data/en.wikipedia.org/wiki/Science_and_Technology_in_the_Discovery_of_America-0.md
category: reference
title: Science and Technology in the Discovery of America
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Science_and_Technology_in_the_Discovery_of_America
date_saved: 2026-05-05T03:00:04.421128+00:00
instance: kb-cron
parent: science-and-technology-in-the-discovery-of-america-20260505-0
summary:
  Science and Technology in the Discovery of America (Spanish: La ciencia y la técnica en el descubrimiento de América), is a work by the historian and mathematician Julio Rey Pastor, published in Spanish in 1945, in Buenos Aires, by the Espasa-Calpe publishing. A second, "improved and corrected" edition was published in 1945. A third and fourth edition were published in 1951 and 1970, respectively. == Description == In this book, Rey Pastor analyzes the role of science and technology in the discovery of America, with special attention to the contributions of disciplines such as geography, cartography, nautical science and cosmography, which were decisive for the realization of transoceanic expeditions, such as that of Christopher Columbus, whom Rey Pastor considers a man of science, taking into account what was understood in his time by "man of science". The work reviews the scientific situation prior to the discovery and the evolution of latitude measurement and geographical representation techniques, highlighting how these innovations allowed the navigation challenges of the time to be faced. He insists on the enormous disproportion between the magnificent results of the discoverers and the poverty of the means at their disposal. The book highlights the leading role of Spanish


id: sonnet-to-science-20260505-0
file: data/en.wikipedia.org/wiki/Sonnet_to_Science-0.md
category: reference
title: Sonnet to Science
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Sonnet_to_Science
date_saved: 2026-05-05T03:00:05.618155+00:00
instance: kb-cron
parent: sonnet-to-science-20260505-0
summary:
  "Sonnet to Science" (originally "Sonnet — To Science") is an 1829 poem by Edgar Allan Poe, published in Al Aaraaf, Tamerlane, and Minor Poems. == Summary == Poe asks why science preys on the poet. Science is peering, destructive and interested only in cold realities. It will not allow the poet to soar in fantasy or even to sit peacefully dreaming beneath a tree. == Publication history == In mid-November 1829, Poe agreed with the Baltimore firm Hatch and Dunning to publish his second volume of poetry, entitled Al Aaraaf, Tamerlane, and Minor Poems. This volume was the first instance in which Poe published his verse under his own name as opposed to his first publication, Tamerlane and Other Poems, which was only attributed to “a Bostonian”. A later published version of this poem includes the following note, “Private reasons—some of which have reference to the sin of plagiarism, and other to the date of Tennyson’s first poems—have induced me, after some hesitation, to re-publish these, the crude compositions of my earliest boyhood. They are printed verbatim—without alteration from the original edition—the date of which is too remote to be judiciously acknowledged.” == References == == External links == An


id: unesco-science-report-20260505-0
file: data/en.wikipedia.org/wiki/UNESCO_Science_Report-0.md
category: reference
title: UNESCO Science Report
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/UNESCO_Science_Report
date_saved: 2026-05-05T03:00:09.814460+00:00
instance: kb-cron
parent: unesco-science-report-20260505-0
summary:
  The UNESCO Science Report is a global monitoring report published regularly by the United Nations Educational, Scientific and Cultural Organization. Every five years, this report maps the latest trends and developments in national and regional policy landscapes, against the backdrop of shifting socio-economic, geopolitical and environmental realities. Each edition is typically released on 10 November, which is World Science Day for Peace and Development. The most recent edition was released on 11 June 2021. == History == In 1987, the General Conference of UNESCO approved the launch of the Organization's first world reports, the World Communication Report, which first appeared two years later. In 1989, the General Conference approved the launch of the World Education Report, which appeared in 1991, 1993, 1995, 1998 and 2000. The launch of these two reports created a momentum to generalize the world reports to all of UNESCO's fields of competence. The World Science Report (as the UNESCO Science Report was originally known) was the next title to appear, in 1993. The first World Information Report followed in 1997 then the World Social Science Report in 1999, as well as two World Culture Reports in 1998 and 2000. Two existing reports were merged to produce


id: unesco-science-report-20260505-1
file: data/en.wikipedia.org/wiki/UNESCO_Science_Report-1.md
category: reference
title: UNESCO Science Report
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/UNESCO_Science_Report
date_saved: 2026-05-05T03:00:09.814460+00:00
instance: kb-cron
parent: unesco-science-report-20260505-0
summary:
  == Geographical coverage == Each edition has added geographic detail. The 2021 edition of the UNESCO Science Report provided data for 193 countries, with contributions from more than 70 authors from 52 countries. Published in June 2021, the seventh report in the series arrived at a crucial juncture, as countries were one-third of the way to the 2030 deadline for achieving their Sustainable Development Goals (SDGs). The report revealed that countries of all income levels shared a common agenda at this time for transitioning to digital and 'green' economies. Themes covered in 2021 included our relationship with advanced technologies and the resources and energy they require, the Fourth Industrial Revolution, the effect of Brexit on science and technology and the status of women in science and Industry 4.0. For the first time, an analysis of scientific output broke down the broad field of cross-cutting strategic technologies into its sub-fields, such as artificial intelligence and robotics, energy and nanotechnology. The report found that the COVID-19 pandemic had energized knowledge production systems. This dynamic built on the trend towards greater international scientific collaboration, which bodes well for tackling this and other global challenges such as climate change and biodiversity loss. However, sustainability


id: outline-of-science-20260505-0
file: data/en.wikipedia.org/wiki/Outline_of_science-0.md
category: reference
title: Outline of science
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Outline_of_science
date_saved: 2026-05-05T03:00:11.582856+00:00
instance: kb-cron
parent: outline-of-science-20260505-0
summary:
  The following outline is provided as a topical overview of science: Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into two – or three – major branches: the natural sciences, which study the physical world, and the social sciences, which study individuals and societies. While referred to as the formal sciences, the study of logic, mathematics, and theoretical computer science are typically regarded as separate because they rely on deductive reasoning instead of the scientific method as their main methodology. Meanwhile, applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. == Study and experimentation == Experimentation is the use of controlled conditions to test an idea. A single independent variable is altered while all other conditions are kept the same to test the alteration's effect on a dependent variable. Design of experiments History of experiments Descriptive and normative science are contrasting methods to explain scientific ideas. Descriptive science explains ideas objectively while normative science explains what should be true using value judgments. Empirical research is conducted using observation and experimentation instead of theory. Empirical evidence


id: outline-of-science-20260505-1
file: data/en.wikipedia.org/wiki/Outline_of_science-1.md
category: reference
title: Outline of science
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Outline_of_science
date_saved: 2026-05-05T03:00:11.582856+00:00
instance: kb-cron
parent: outline-of-science-20260505-0
summary:
  Alchemy is the historical study of what is now associated with chemistry. It was accepted as a science until the end of the 17th century. Astrology is a method used in ancient and medieval times to study the social sciences through physical phenomena. Cosmogony is the study of Earth's origins through divine creation. Natural history is the historical name for study of subjects that are now associated with biology. Natural philosophy is the historical name for study of subjects that are now associated with physics and astronomy. == Philosophy of science == Philosophy of science encompasses the questions, assumptions, foundations, methods and implications of science. Anti-realism is the opposition to scientific realism. Anti-realists believe that scientific theories cannot be objectively true or that they do not correlate to objectively real phenomena. Antiscience is a criticism and rejection of modern science and the scientific community. Denialism is the rejection of scientific facts that conflict with one's previous beliefs. Empiricism is the belief that truth is obtained from sense experience. Empiricists believe that science is a systematic and detailed application of common everyday thought and inquiry. Constructive empiricism is the belief that scientific theories can be true but successful testing does not


id: outline-of-science-20260505-2
file: data/en.wikipedia.org/wiki/Outline_of_science-2.md
category: reference
title: Outline of science
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Outline_of_science
date_saved: 2026-05-05T03:00:11.582856+00:00
instance: kb-cron
parent: outline-of-science-20260505-0
summary:
  Consensus is general agreement among scientists on a conclusion or finding. Demarcation is the division of scientific and non-scientific ideas, and the resulting dispute over how to divide them. Different fields of study may be evaluated on the level of experimental rigor, how much they engage in abstraction, how closely related they are with the humanities, or other qualities. Funding of science can come from governments and donors. Junk science is the presentation of uncertain scientific claims as facts, typically to a legal or political end. List of topics characterized as pseudoscience Meta-analysis is the comparing of several studies on the same topic to draw conclusions. A paradigm is the overall understanding and accepted system of how science functions. Paradigm shifts are historical periods of total change in how science is practiced. The concept was introduced by Thomas Kuhn. Peer review is a process in which an academic provides feedback on scientific writing, often anonymously, before publication. Pseudoscience is unscientific practice or belief that is presented as scientific or uses scientific language to suggest credibility. History of pseudoscience Regulation of science involves the use of policy to limit scientific activity that regulators determine to be dangerous, unethical, or ineffective. Scientific


id: outline-of-science-20260505-3
file: data/en.wikipedia.org/wiki/Outline_of_science-3.md
category: reference
title: Outline of science
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Outline_of_science
date_saved: 2026-05-05T03:00:11.582856+00:00
instance: kb-cron
parent: outline-of-science-20260505-0
summary:
  == References == Agassi, Joseph (1981). Science and Society: Studies in the Sociology of Science. D. Reidel. ISBN 978-90-277-1244-8. Armstrong, Jon Scott; Green, Kesten C. (2022). The Scientific Method: A Guide to Finding Useful Knowledge. Cambridge University Press. ISBN 978-1-009-09642-3. Bird, Alexander (2005). Philosophy of Science. Routledge. ISBN 978-1-85728-504-8. Browne, Janet; Porter, Roy; Bynum, William F., eds. (1981). Dictionary of the History of Science. Macmillan. ISBN 978-0-333-29316-4. Collocott, Thomas C., ed. (1971). Dictionary of Science and Technology. W. & R. Chambers. ISBN 978-0-550-13202-4. Daintith, John; Martin, Elizabeth (2010) [1984]. Oxford Dictionary of Science (6th ed.). Oxford University Press. ISBN 978-0-19-956146-9. Erickson, Mark (2005). Science, Culture and Society: Understanding Science in the 21st Century. Polity. ISBN 978-0-7456-2974-2. Godfrey-Smith, Peter (2003). Theory and Reality: An Introduction to the Philosophy of Science. University of Chicago Press. ISBN 978-0-226-30062-7. Hagstrom, Warren O. (1965). The Scientific Community. Basic Books. LCCN 65-10539. Heilbron, J. L., ed. (2003). The Oxford Companion to the History of Modern Science. Oxford University Press. ISBN 978-0-19-511229-0. Morris, Christopher G., ed. (1992). Academic Press Dictionary of Science and Technology. Elsevier Science. ISBN 978-0-12-200400-1. Pigliucci, Massimo; Boudry, Maarten, eds. (2013). Philosophy of Pseudoscience: Reconsidering the Demarcation Problem. The University of Chicago Press. ISBN


id: list-of-adiabatic-concepts-20260505-0
file: data/en.wikipedia.org/wiki/List_of_adiabatic_concepts-0.md
category: reference
title: List of adiabatic concepts
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_adiabatic_concepts
date_saved: 2026-05-05T03:00:12.724457+00:00
instance: kb-cron
parent: list-of-adiabatic-concepts-20260505-0
summary:
  Adiabatic (from Gr. ἀ negative + διάβασις passage; transference) refers to any process that occurs without heat transfer. This concept is used in many areas of physics and engineering. Notable examples are listed below. == Automobiles == Engine braking, a feature of some diesel engines, uses adiabatic expansion to diminish the vehicle's forward momentum. == Meteorology == Adiabatic lapse rate, the change in air temperature with changing height, resulting from pressure change. == Quantum chemistry == Adiabatic invariant Born–Oppenheimer approximation == Thermodynamics == Adiabatic process Adiabatic ionization Adiabatic index Adiabatic accessibility == Quantum mechanics == Adiabatic theorem Adiabatic quantum motor == Electronics == Adiabatic circuit Adiabatic logic == References ==


id: list-of-laser-applications-20260505-0
file: data/en.wikipedia.org/wiki/List_of_laser_applications-0.md
category: reference
title: List of laser applications
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_laser_applications
date_saved: 2026-05-05T03:00:13.914805+00:00
instance: kb-cron
parent: list-of-laser-applications-20260505-0
summary:
  Many scientific, military, medical and commercial laser applications have been developed since the invention of the laser in 1958. The coherency, high monochromaticity, and ability to reach extremely high powers are all properties which allow for these specialized applications. == Scientific == In science, lasers are used in many ways, including: A wide variety of interferometric techniques Raman spectroscopy Laser induced breakdown spectroscopy Atmospheric remote sensing Investigating nonlinear optics phenomena Holographic techniques employing lasers also contribute to a number of measurement techniques. Laser based lidar (LIght raDAR) technology applications in geology, seismology, remote sensing and atmospheric physics. Three-dimensional structural modifications and writing inside technological materials. Lasers have been used aboard spacecraft such as in the Cassini-Huygens mission. In astronomy, lasers have been used to create artificial laser guide stars, used as reference objects for adaptive optics telescopes. Lasers may also be indirectly used in spectroscopy as a micro-sampling system, a technique termed Laser ablation (LA), which is typically applied to ICP-MS apparatus resulting in the powerful LA-ICP-MS. The principles of laser spectroscopy are discussed by Demtröder. === Spectroscopy === Most types of laser are an inherently pure source of light; they emit near-monochromatic light with a very well defined range


id: list-of-laser-applications-20260505-1
file: data/en.wikipedia.org/wiki/List_of_laser_applications-1.md
category: reference
title: List of laser applications
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_laser_applications
date_saved: 2026-05-05T03:00:13.914805+00:00
instance: kb-cron
parent: list-of-laser-applications-20260505-0
summary:
  Powerful lasers producing ultra-short (in the tens of femtoseconds) and ultra-intense (up to 1023 W/cm2) laser pulses offer much greater acceleration gradients than that of conventional accelerators. This fact is exploited in several plasma acceleration techniques used for accelerating both electrons and charged ions to high energies. === Microscopy === Confocal laser scanning microscopy and Two-photon excitation microscopy make use of lasers to obtain blur-free images of thick specimens at various depths. Laser capture microdissection use lasers to procure specific cell populations from a tissue section under microscopic visualization. Additional laser microscopy techniques include harmonic microscopy, four-wave mixing microscopy and interferometric microscopy. == Military == === Directly as an energy weapon === A laser weapon is directed-energy weapon based on lasers. === Defensive countermeasures === Defensive countermeasure applications can range from compact, low power infrared countermeasures to high power, airborne laser systems. IR countermeasure systems use lasers to confuse the seeker heads on infrared homing missiles. === Disorientation === Some weapons simply use a laser to disorient a person. One such weapon is the Thales Green Laser Optical Warner. === Guidance === Laser guidance is a technique of guiding a missile or other projectile or vehicle to a target by


id: list-of-laser-applications-20260505-2
file: data/en.wikipedia.org/wiki/List_of_laser_applications-2.md
category: reference
title: List of laser applications
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_laser_applications
date_saved: 2026-05-05T03:00:13.914805+00:00
instance: kb-cron
parent: list-of-laser-applications-20260505-0
summary:
  Industrial laser applications can be divided into two categories depending on the power of the laser: material processing and micro-material processing. In material processing, lasers with average optical power above 1 kilowatt are used mainly for industrial materials processing applications. Beyond this power threshold there are thermal issues related to the optics that separate these lasers from their lower-power counterparts. Laser systems in the 50-300W range are used primarily for pumping, plastic welding and soldering applications. Lasers above 300W are used in brazing, thin metal welding, and sheet metal cutting applications. The required brightness (as measured in by the beam parameter product) is higher for cutting applications than for brazing and thin metal welding. High power applications, such as hardening, cladding, and deep penetrating welding, require multiple kW of optical power, and are used in a broad range of industrial processes. Micro material processing is a category that includes all laser material processing applications under 1 kilowatt. The use of lasers in Micro Materials Processing has found broad application in the development and manufacturing of screens for smartphones, tablet computers, and LED TVs. A detailed list of industrial and commercial laser applications includes: Laser cutting Laser welding Laser drilling Laser


id: list-of-applications-of-stainless-steel-20260505-0
file: data/en.wikipedia.org/wiki/List_of_applications_of_stainless_steel-0.md
category: reference
title: List of applications of stainless steel
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_applications_of_stainless_steel
date_saved: 2026-05-05T03:00:15.064706+00:00
instance: kb-cron
parent: list-of-applications-of-stainless-steel-20260505-0
summary:
  Stainless steel is used in a multitude of fields including architecture, art, chemical engineering, food and beverage manufacture, vehicles, medicine, energy and firearms. == Architecture == The use of stainless steel in buildings can be both practical and aesthetic. In vogue during the Art Deco period, the most famous use of stainless steel can be seen in the upper portion of the Chrysler Building. Thanks to its durability, many of these buildings have retained their original appearance. Stainless steel is used in the construction of modern buildings, such as the exterior of the Petronas Twin Towers and the Jin Mao Building. The Parliament House of Australia in Canberra has a stainless steel flagpole weighing over 220 metric tons (240 short tons). The largest stainless steel building in North America is the aeration building in the Edmonton Composting Facility. La Geode in Paris has a dome composed of 6433 polished stainless steel triangles that form the sphere that reflects the sky. The development of high-strength stainless steel grades, such as "lean duplex" grades, has led to increasing use in structural applications. Thanks to its low reflectivity, stainless steel is used as a roofing material for airports, which prevents pilots from being


id: list-of-applications-of-stainless-steel-20260505-1
file: data/en.wikipedia.org/wiki/List_of_applications_of_stainless_steel-1.md
category: reference
title: List of applications of stainless steel
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_applications_of_stainless_steel
date_saved: 2026-05-05T03:00:15.064706+00:00
instance: kb-cron
parent: list-of-applications-of-stainless-steel-20260505-0
summary:
  == Food and beverage == Austenitic (300 series) stainless steel, particularly Types 304 and 316, is the material of choice for the food and beverage industry, though martensitic and ferritic (400 series) steels are also used. Stainless steels are advantageous because they do not affect the taste of the product, are easily cleaned and sterilized to prevent bacterial contamination of the food, and are durable. Within the food and beverage industry, stainless steel is extensively used in cookware, commercial food processing, commercial kitchens, brewing beer, winemaking, and meat processing. Stainless steel's superiority over plastic in preserving flavor is reportedly why McDonald's traditionally procures soft drink syrup for its soda fountains from The Coca-Cola Company in stainless steel tanks, rather than the bag-in-box technology preferred by most fast food restaurant chains. Acidic foods with high salt additions, such as tomato sauce, and highly salted condiments, such as soy sauce, may require higher-alloyed stainless steels such as 6% Mo superaustenitics to prevent pitting corrosion by chloride. == Vehicles == === Automobiles === The Allegheny Ludlum Corporation worked with Ford on various concept cars with stainless steel bodies from the 1930s through the 1970s to demonstrate the material's potential. The 1957 and 1958


id: list-of-applications-of-stainless-steel-20260505-2
file: data/en.wikipedia.org/wiki/List_of_applications_of_stainless_steel-2.md
category: reference
title: List of applications of stainless steel
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_applications_of_stainless_steel
date_saved: 2026-05-05T03:00:15.064706+00:00
instance: kb-cron
parent: list-of-applications-of-stainless-steel-20260505-0
summary:
  Surgical tools and medical equipment are usually made of stainless steel, because of its durability and ability to be sterilized in an autoclave. In addition, surgical implants such as bone reinforcements and replacements (e.g. hip sockets and cranial plates) are made with special alloys formulated to resist corrosion, mechanical wear, and biological reactions in vivo. Stainless steel is used in a variety of applications in dentistry. It is common to use stainless steel in many instruments that need to be sterilized, such as needles, endodontic files in root canal therapy, metal posts in root canal-treated teeth, temporary crowns and crowns for deciduous teeth, and arch wires and brackets in orthodontics. Surgical stainless steel alloys (e.g., 316 low-carbon steel) were also used in some early dental implants. == Energy == Stainless steels are extensively used in all types of power stations, from nuclear to solar. Stainless steels are ideally suited as mechanical supports for power generation units when the permeation of gases or liquids are required, such as filters in cooling water or hot gas clean up or as structural supports in electrolytic power generation. Stainless steel is used in electrolysers (proton exchange membranes and solid oxide electrolysers being the most


id: list-of-asteroid-discovering-observatories-20260505-0
file: data/en.wikipedia.org/wiki/List_of_asteroid-discovering_observatories-0.md
category: reference
title: List of asteroid-discovering observatories
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/List_of_asteroid-discovering_observatories
date_saved: 2026-05-05T03:00:16.235397+00:00
instance: kb-cron
parent: list-of-asteroid-discovering-observatories-20260505-0
summary:
  The list of asteroid-discovering observatories contains a section for each observatory which has discovered one or more asteroids, along with a list of those asteroids. For each numbered asteroid, the Minor Planet Center lists one or more discoverers who have been given credit for the discovery. Sometimes these are individuals (by modern rules there can be no more than three co-discoverers), and sometimes the credit is given to an organization (for instance, Purple Mountain Observatory). == Observatories == === Andrushivka Astronomical Observatory === The Andrushivka Astronomical Observatory is a private observatory near Andrushivka in Zhytomyr oblast, Ukraine. The observatory has IAU observatory code A50. It has discovered the following asteroids: === Bohyunsan Optical Astronomy Observatory === The Korean Bohyunsan Optical Astronomy Observatory (BOAO), located at Mount Bohyeon near the city of Yeongcheon, is a member of the East-Asian Planet Search Network, an international collaboration between Korea, China and Japan. Each facility, BOAO (Korea), Xinglong Station (NAOC) (China), and Okayama Astrophysical Observatory (Japan), has a 2 m class telescope, a high dispersion echelle spectrograph, and an iodine absorption cell for precise RV measurements, looking for extrasolar planets. It has discovered the following asteroids: === Cerro El Roble Astronomical Station === Between


id: atmospheric-optics-ray-tracing-codes-20260505-0
file: data/en.wikipedia.org/wiki/Atmospheric_optics_ray-tracing_codes-0.md
category: reference
title: Atmospheric optics ray-tracing codes
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Atmospheric_optics_ray-tracing_codes
date_saved: 2026-05-05T03:00:17.507286+00:00
instance: kb-cron
parent: atmospheric-optics-ray-tracing-codes-20260505-0
summary:
  Atmospheric optics ray tracing codes - this article list codes for light scattering using ray-tracing technique to study atmospheric optics phenomena such as rainbows and halos. Such particles can be large raindrops or hexagonal ice crystals. Such codes are one of many approaches to calculations of light scattering by particles. == Geometric optics (ray tracing) == Ray tracing techniques can be applied to study light scattering by spherical and non-spherical particles under the condition that the size of a particle is much larger than the wavelength of light. The light can be considered as collection of separate rays with width of rays much larger than the wavelength but smaller than a particle. Rays hitting the particle undergoes reflection, refraction and diffraction. These rays exit in various directions with different amplitudes and phases. Such ray tracing techniques are used to describe optical phenomena such as rainbow of halo on hexagonal ice crystals for large particles. Review of several mathematical techniques is provided in series of publications. The 46° halo was first explained as being caused by refractions through ice crystals in 1679 by the French physicist Edmé Mariotte (1620–1684) in terms of light refraction Jacobowitz in 1971 was the first to


id: atmospheric-radiative-transfer-codes-20260505-0
file: data/en.wikipedia.org/wiki/Atmospheric_radiative_transfer_codes-0.md
category: reference
title: Atmospheric radiative transfer codes
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Atmospheric_radiative_transfer_codes
date_saved: 2026-05-05T03:00:18.655518+00:00
instance: kb-cron
parent: atmospheric-radiative-transfer-codes-20260505-0
summary:
  An atmospheric radiative transfer model, code, or simulator calculates radiative transfer of electromagnetic radiation through a planetary atmosphere. == Methods == At the core of a radiative transfer model lies the radiative transfer equation that is numerically solved using a solver such as a discrete ordinate method or a Monte Carlo method. The radiative transfer equation is a monochromatic equation to calculate radiance in a single layer of the Earth's atmosphere. To calculate the radiance for a spectral region with a finite width (e.g., to estimate the Earth's energy budget or simulate an instrument response), one has to integrate this over a band of frequencies (or wavelengths). The most exact way to do this is to loop through the frequencies of interest, and for each frequency, calculate the radiance at this frequency. For this, one needs to calculate the contribution of each spectral line for all molecules in the atmospheric layer; this is called a line-by-line calculation. For an instrument response, this is then convolved with the spectral response of the instrument. A faster but more approximate method is a band transmission. Here, the transmission in a region in a band is characterised by a set of pre-calculated coefficients (depending


id: azeotrope-tables-20260505-0
file: data/en.wikipedia.org/wiki/Azeotrope_tables-0.md
category: reference
title: Azeotrope tables
tags: science, encyclopedia
source_url: https://en.wikipedia.org/wiki/Azeotrope_tables
date_saved: 2026-05-05T03:00:21.065789+00:00
instance: kb-cron
parent: azeotrope-tables-20260505-0
summary:
  This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture. Boiling points are reported at a pressure of 760 mm Hg unless otherwise stated. Where the mixture separates into layers, values are shown for upper (U) and lower (L) layers. The data were obtained from Lange's 10th edition and CRC Handbook of Chemistry and Physics 44th edition unless otherwise noted (see color code table). A list of 15825 binary and ternary mixtures was collated and published by the American Chemical Society. An azeotrope databank is also available online through the University of Edinburgh. == Binary azeotropes == == Ternary azeotropes == Tables of various ternary azeotropes (that is azeotropes consisting of three components). Fraction percentages are given by weight. ‡Saddle azeotrope ‡Saddle azeotrope == References ==


