social.sokoll.com
#science #sciencemanuelacasasoli
Sometimes a mirror that reflects 99.9999% of light isn’t good enough.
LIGO’s mirrors are made of 70 layers of glass. The mirrors are designed to perfectly reflect the wavelength of light used by LIGO’s laser.
tps://www.quantamagazine.org/to-make-the-perfect-mirror-physicists-confront-the-mystery-of-glass-20200402/
Paradoxically, the more you save on a flash drive, the lighter it gets.www.sciencefocus.com
#science #sciencemanuelacasasoli
Should scientists infect healthy people with the coronavirus to test vaccines?
Researchers are discussing a dramatic approach to research that could help end the pandemic: infecting a handful of healthy volunteers with the virus to rapidly test a vaccine.Should scientists infect healthy young people with coronavirus?
Radical proposal to conduct ‘human challenge’ studies could dramatically speed up vaccine research.www.nature.com
Radical proposal to conduct ‘human challenge’ studies could dramatically speed up vaccine research.www.nature.com
Dry immersion infographic
Image: Dry immersion infographic
#human #space #science #esa #europeanspaceagency
posted by pod_feeder_v2
Image: Dry immersion infographic
#Science #Pollution - Study suggests #LEGO bricks could survive in #ocean for up to 1,300 years
Study suggests LEGO bricks could survive in ocean for up to 1,300 years
A study led by the University of Plymouth examined the extent to which items of the ever-popular children’s toy were worn down in the marine environmentwww.plymouth.ac.uk
A study led by the University of Plymouth examined the extent to which items of the ever-popular children’s toy were worn down in the marine environmentwww.plymouth.ac.uk
“I’m Not An Epidemiologist But…": The Rise Of The Coronavirus Influencers
https://www.buzzfeednews.com/article/ryanhatesthis/im-not-an-epidemiologist-but-the-rise-of-the-corona
Interesting perspective on the issue of social media in the context of #coronavirus
It touches also on those two articles I've already shared:
Why You Must Act Now
The Hammer and the Dance
In the article a podcast is mentioned: This Week in Virology
(each episode is rather long but thankfully there are pointers to the subsections)
#science“I’m Not An Epidemiologist But…": The Rise Of The Coronavirus Influencers
What happens when Twitter engagement decides who’s in charge of the coronavirus public health crisis?www.buzzfeednews.com
What happens when Twitter engagement decides who’s in charge of the coronavirus public health crisis?www.buzzfeednews.com
open letterThis is an emergency call for open science, the movement to make tools, data, and publications resulting from publicly funded research available to the public.#opendata #science #research #PubMedEmbracing Open Science in a Medical Crisis
Responding to the threat of COVID-19, science advisers from twelve countries have signed on to an open letter urging scientific publishers to make all COVID-19 research freely available to the public through PubMed Central or the World Health Organization's COVID Database.This is an emergency call...www.eff.org
This is an emergency call for open science, the movement to make tools, data, and publications resulting from publicly funded research available to the public.#opendata #science #research #PubMed
Responding to the threat of COVID-19, science advisers from twelve countries have signed on to an open letter urging scientific publishers to make all COVID-19 research freely available to the public through PubMed Central or the World Health Organization's COVID Database.This is an emergency call...www.eff.org
Satellite Updates 2020-03-22
✴️ Featured Media - Spiral Galaxy NGC 2008
https://www.esa.int/ESA_Multimedia/Images/2020/02/Open_arms
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Significant Earthquake Summary - Croatia 5.4
https://earthquake.usgs.gov/earthquakes/eventpage/us70008dx7/executive
Public Weather Alerts Canada - Nova Scotia, Quebec, NWT & BC
https://weather.gc.ca/warnings/index_e.html
Dangerous Weather Warnings Europe - Slovenia, Sweden, Serbia, Romania, Portugal, Montenegro, Italy, Germany, Spain, Greece & Croatia
http://www.meteoalarm.eu/
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The Starship Multiversal ✨
https://www.minds.com/TheStarshipMultiversal
https://diasp.org/people/41c56c600ef601381774047d7b62795e
#Space #Science #News #Trending #Breaking
#science #coronavirusWhy the Coronavirus Has Been So Successful
We’ve known about SARS-CoV-2 for only three months, but scientists can make some educated guesses about where it came from and why it’s behaving in such an extreme way.www.theatlantic.com
We’ve known about SARS-CoV-2 for only three months, but scientists can make some educated guesses about where it came from and why it’s behaving in such an extreme way.www.theatlantic.com
je vous propose chaque jours une petite partie de l’encyclopédie anarchiste (1925 et 1934) de Sébastien Faure (1852 /1942)#Encyclopédie #Anarchiste de #Sébastien-Faure
aujourd’hui le mots choisit est :SCIENCE n. f. (du latin : scientia ; de scire, savoir)
On donne communément le nom de science à tout ensemble de connaissances humaines, vraies ou supposées. J'insiste sur ces deux mots, qui terminent ma définition : « ou supposées ». En effet, il est courant encore, au XXème siècle, de désigner, sous le nom de « sciences occultes » : l'alchimie, la chiromancie, l'astrologie, la cabale ; de croire à la réalité de la « science infuse », qui nous viendrait directement de Dieu, par inspiration ; de déclarer, enfin, que la métaphysique est la « science des abstractions », comme la théologie est la « science des choses divines », alors qu'il s'agit de données fort douteuses, contestables et contestées. Honorer du nom de « science » des choses aussi peu certaines, c'est faire un abus du mot. Si l'on ne veut pas rompre délibérément avec de très vieilles coutumes installées dans la langue, encore y aurait-il lieu de distinguer, très nettement, entre les sciences et la Science, celle-ci étant considérée comme le savoir humain par excellence, sans confusion possible avec ses soeurs inférieures.
La Science se compose exclusivement des connaissances qui, étant fondées sur l'expérience positive, et, par cela même, évidentes pour tout le monde, ne sont plus contestables par personne. Un fait est d'ordre scientifique lorsque sa réalité ne souffre plus aucun doute, c'est-à-dire lorsque quiconque peut contrôler son existence à volonté, à la seule condition de se placer dans les conditions requises pour cette constatation.
Il y a lieu de distinguer entre les faits scientifiques d'observation et les faits scientifiques d'expérimentation. Ces derniers sont ceux dont nous connaissons si bien les conditions déterminantes, et dont celles-ci sont tellement aisées à réunir, qu'il nous est loisible d'en opérer, chaque fois que nous le voulons, la démonstration. A cette catégorie appartiennent les expériences de physique et de chimie, journellement présentées dans des laboratoires, devant des élèves, par les professeurs chargés de leur enseignement, et qui ont cette haute conscience de n'affirmer rien qui ne soit de suite prouvable, par la production du phénomène confirmant la théorie. Les faits scientifiques d'observation sont ceux qui, en raison de leur nature, ne peuvent être produits à volonté, mais dont l'apparition régulière, enregistrable, et souvent prévisible, ne laisse prise à aucune contestation à l'égard de leur authenticité. Tel est le cas des éclipses de soleil et des aurores boréales, pour ne citer que des exemples bien connus.
Alors que les raisonnements de la philosophie abstraite n'ont donné lieu qu'à des systèmes incertains et contradictoires, tous plus ou moins discutables, selon le point de vue auquel on se place, le fait scientifiquement démontré, et démontrable, a ceci de particulier qu'il s'impose à tous par la force de l'évidence, et réduit à néant la possibilité des controverses.
Il a été dit de la Science qu'elle avançait parmi des ruines, la vérité du jour étant l'erreur du lendemain. Cette affirmation n'est pas conforme à l'exactitude. La réalité d'un fait scientifiquement prouvé est définitivement acquise, toujours. Ce qui change parfois, c'est l'interprétation du fait quant à sa nature exacte, et les hypothèses, c'est-à-dire les suppositions, auxquelles, de le constater avait donné lieu. Ce n'est point la même chose.
A mesure qu'un aviateur s'élève au-dessus du sol, le paysage apparaît pour lui beaucoup plus vaste qu'au moment du départ, et avec des aspects nombreux qu'il ne soupçonnait pas, mais ceci n'infirme point l'existence, et le souvenir, du terrain d'aviation dont il a pris son vol, et qui continue, quoique dans des proportions plus modestes pour l'oeil de l'observateur, à faire partie du paysage. Ainsi en est-il pour l'homme de science, sans cesse avide de nouvelles découvertes.
Si ce que nous connaissons de l'univers, grâce aux méthodes scientifiques d'observation et d'expérimentation, ne fournit pas à tous les problèmes qui se posent devant notre conscience, une solution, il n'en demeure pas moins que la somme de nos connaissances positives s'accroît chaque jour, donnant aux humains des certitudes qui, pour être relatives, n'en sont pas moins autrement dignes d'intérêt que les données, imprécises ou suspectes, du mysticisme et de la raison pure.
Le rationalisme scientifique n'est pas une doctrine philosophique, mais une attitude intellectuelle, qui s'offre comme préférable à toute autre, jusqu'à nouvel ordre, en raison de l'excellence de ses résultats acquis. Alors que la raison pure s'efforce d'imposer à la réalité des faits, coûte que coûte, l'arbitraire de ses concepts, le rationalisme scientifique fait dépendre constamment la théorie de l'expérience et n'hésite pas à sacrifier les données de la théorie à celles de l'expérience, chaque fois qu'il existe entre elles deux un conflit. Le rationalisme scientifique ne condamne point la théorie, indispensable à l'explication des faits, et qui est d'une aide très précieuse pour faciliter les recherches, mais il n'accorde à la théorie que la valeur d'une supposition - disons : d'une donnée contestable et provisoire - tant que la théorie n'a pas reçu de la pratique une indiscutable confirmation.
- Jean MARESTAN
#easf #science
Disabled people cut off from vital supplies due to panic buying | World news | The Guardian
Disabled people are being left cut off from vital supplies due to the coronavirus pandemic, as charities warn of a rising number of calls from worried individuals who are struggling.#science #medicine #health #Covid-19 #CoronaVirus #disabilityDisabled people cut off from vital supplies due to panic buying
People with disabilities say coronavirus means there are no home delivery slots Coronavirus – latest updateswww.theguardian.com
Disabled people are being left cut off from vital supplies due to the coronavirus pandemic, as charities warn of a rising number of calls from worried individuals who are struggling.#science #medicine #health #Covid-19 #CoronaVirus #disability
People with disabilities say coronavirus means there are no home delivery slots Coronavirus – latest updateswww.theguardian.com
Das DLR-Jugendportal DLR_next zeigt faszinierende Einblicke in Raumfahrt, Luftfahrt, Energie- und Verkehrsforschung für Kinder und Jugendliche.www.dlr.de
Japanese flu drug 'clearly effective' in treating coronavirus, says China | World news | The Guardian
Medical authorities in China have said a drug used in Japan to treat new strains of influenza appeared to be effective in coronavirus patients, Japanese media said on Wednesday.#science #medicine #health #Covid-19 #CoronaVirusJapanese flu drug 'clearly effective' in treating coronavirus, says China
Shares in Fujifilm Toyama Chemical, which developed favipiravir, surged after praise by Chinese officialwww.theguardian.com
Medical authorities in China have said a drug used in Japan to treat new strains of influenza appeared to be effective in coronavirus patients, Japanese media said on Wednesday.#science #medicine #health #Covid-19 #CoronaVirus
Shares in Fujifilm Toyama Chemical, which developed favipiravir, surged after praise by Chinese officialwww.theguardian.com
On the verge: a quiet roadside revolution is boosting wildflowers | Environment | The Guardian
Projects to reduce grass cutting and increase the diversity of plants and wildlife along Britain’s roads are having dramatic resultsA little bit of good news in a worrisome world.
#science #environment #nature #diversityOn the verge: a quiet roadside revolution is boosting wildflowers
Projects to reduce grass cutting and increase the diversity of plants and wildlife along Britain’s roads are having dramatic resultswww.theguardian.com
Projects to reduce grass cutting and increase the diversity of plants and wildlife along Britain’s roads are having dramatic resultsA little bit of good news in a worrisome world.
Projects to reduce grass cutting and increase the diversity of plants and wildlife along Britain’s roads are having dramatic resultswww.theguardian.com
Let it snow
Image: Let it snow
#earth #science #space #esa #europeanspaceagency
posted by pod_feeder_v2
Image: Let it snow
#science #sciencemanuelacasasoli
The structure of the cellular human receptor for SARS and COVID-19 coronavirus has been published.
These findings provide important insights to the molecular basis for coronavirus recognition and infection.
👇
Structural basis for the recognition of the SARS-CoV-2 by full-length human ACE2
Es sind Akademiker, Studenten, Rentner, die im bayerischen Dorf Regen über "Grenzwissenschaften" diskutieren. Sie halten den Klimawandel für eine Lüge, glauben an eine "Umvolkung". Eine Reportage von Carla Reveland.www.tagesschau.de
Freeman John Dyson... R.I.P., the Free Man
15 December 1923 – 28 February 2020
Freeman John Dyson was an English-born American theoretical physicist and mathematician known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering. He was professor emeritus in the Institute for Advanced Study in Princeton, a member of the Board of Visitors of Ralston College and a member of the Board of Sponsors of the Bulletin of the Atomic Scientists.MORE: https://en.wikipedia.org/wiki/Freeman_Dyson
Dyson originated several concepts that bear his name, such as Dyson's transform, a fundamental technique in additive number theory, which he developed as part of his proof of Mann's theorem; the Dyson tree, a hypothetical genetically-engineered plant capable of growing in a comet; the Dyson series, a perturbative series where each term is represented by Feynman diagrams; the Dyson sphere, a thought experiment that attempts to explain how a space-faring civilization would meet its energy requirements with a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output; and Dyson's eternal intelligence, a means by which an immortal society of intelligent beings in an open universe could escape the prospect of the heat death of the universe by extending subjective time to infinity while expending only a finite amount of energy.
Dyson believed global warming is caused by increased carbon dioxide through burning fossil fuels but that some of the effects of this are favourable and not taken into account by climate scientists, such as increased agricultural yield. He was skeptical about the simulation models used to predict climate change, arguing that political efforts to reduce causes of climate change distract from other global problems that should take priority.
Dyson died after a fall, at a hospital near Princeton, New Jersey, on 28 February 2020 at age 96.
ConceptsPhoto: Creative Commons Attribution-Share Alike 2.0 Generic license
- Biotechnology and genetic engineering
- The Origin of Life
- Dyson sphere
- Dyson tree
- Space colonies
- Space exploration
- Dyson's eternal intelligence
- Dyson's transform
- Dyson series
- Quantum physics and prime numbers
- Rank of a partition
- Crank of a partition
- Astrochicken
#Dyson #biotechnology #genetic #engineering #intelligence #quantum #physics #mathematic #electrodynamics #solid-state #astronom #nuclear #engineering #RIP #news #photo #USA #climate #change #science
Freeman John Dyson was an English-born American theoretical physicist and mathematician known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering. He was professor emeritus in the Institute for Advanced Study in Princeton, a member of the Board of Visitors of Ralston College and a member of the Board of Sponsors of the Bulletin of the Atomic Scientists.MORE: https://en.wikipedia.org/wiki/Freeman_Dyson
Dyson originated several concepts that bear his name, such as Dyson's transform, a fundamental technique in additive number theory, which he developed as part of his proof of Mann's theorem; the Dyson tree, a hypothetical genetically-engineered plant capable of growing in a comet; the Dyson series, a perturbative series where each term is represented by Feynman diagrams; the Dyson sphere, a thought experiment that attempts to explain how a space-faring civilization would meet its energy requirements with a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output; and Dyson's eternal intelligence, a means by which an immortal society of intelligent beings in an open universe could escape the prospect of the heat death of the universe by extending subjective time to infinity while expending only a finite amount of energy.
Dyson believed global warming is caused by increased carbon dioxide through burning fossil fuels but that some of the effects of this are favourable and not taken into account by climate scientists, such as increased agricultural yield. He was skeptical about the simulation models used to predict climate change, arguing that political efforts to reduce causes of climate change distract from other global problems that should take priority.
Dyson died after a fall, at a hospital near Princeton, New Jersey, on 28 February 2020 at age 96.
3D printer designed for ISS
#engineering #technology #space #science #esa #europeanspaceagency
posted by
Negative Ion Emitters Debunked
This turns out to be important. Not only will these not improve your health, it turns out that they contain Thorium and are radioactive. Good way to get cancer, if you want it!
Excellent science video on the whole issue:
https://digg.com/video/negative-ion-products-radioactive
#science #negativeIon #ionsHow Negative Ion Products, Which Claim To Have Health Benefits, Are Actually Radioactive - Digg
Negative ion products are all the rage these days, but the making of these products may have some hidden, insidious effects.digg.com
Negative ion products are all the rage these days, but the making of these products may have some hidden, insidious effects.digg.com
Random stuff.
#StarTrek #scienceThe Terrible Truth About Star Trek's Transporters
In 1966, the idea of a transporter, the way Star Trek characters beamed down to various planets, was amazing. The explanation was that the device disassembled all the atoms of one's body, converted them to energy, zapped that energy to a destination, and then re-assembled them in precise order. And the person traveling didn't even lose consciousness! We later learned that the special effect was invented because it was so much cheaper and faster than sending people off in a shuttle. But how plausible is t...www.neatorama.com
In 1966, the idea of a transporter, the way Star Trek characters beamed down to various planets, was amazing. The explanation was that the device disassembled all the atoms of one's body, converted them to energy, zapped that energy to a destination, and then re-assembled them in precise order. And the person traveling didn't even lose consciousness! We later learned that the special effect was invented because it was so much cheaper and faster than sending people off in a shuttle. But how plausible is t...www.neatorama.com
Oh
I post pictures / meme every day about anarchy and other cool stuff.
Feel free to download and share them ! :)
#shitposting #anarchist meme for cool people
#meme #humor #dog #doggo #comics #comic
#global-warming #ecology #environment #energy #climate
#climateemergency #pollution #science
