#distance
Source: https://youtube.com/watch?v=Y1mCsSAipwM
New information has emerged that the COVID vaccine Pfizer distributed was not produced using the same process as the vaccine that was tested prior to gaining approval for distribution. Retired nurse instructor and popular YouTuber Dr. John Campbell speaks with sociologist Josh Guetzkow about the ramifications of this possible clinical trial a bait-and-switch.
Jimmy and guest Craig Jardula discuss the unwillingness of so many to face the increasingly obvious con job nearly every aspect of the COVID pandemic represented.
Shout out to the #people who #never wore a fear #mask, never social #distance, never #tested and obviously never took the #poison. You deserve to be recognized for #standing your #ground.
A #mini-planet orbiting in the frigid #outer reaches of the #solarsystem has a #Saturn-like #ring of #dust and #debris that #defies the rules of #physics, a new study has #revealed.
The planet in question is called #Quaoar and it's the #seventh largest of the known #dwarf #planets of which #Pluto is the #king. #Discovered in #2002 and about 697 miles wide (1,121 kilometers), Quaoar is one of the so-called #trans-Neptunian objects, small planets orbiting #beyond the solar system's outermost planet #Neptune.
Residing in the #KuiperBelt, the doughnut-shaped ring of rocky and icy debris in the outer solar system, Quaoar is a proud owner of its own #moon, the 100-mile-wide (160 km) #Weywot. And a recent observation campaign revealed that it also has a ring of material in its orbit.
That by itself wouldn't be so special. The gas giant Saturn is known to possess a whole series of rings. #Jupiter, Neptune and #Uranus also have some. One other trans-Neptunian object — #Haumea — has been found to have a ring, and the space rock #Chariklo that orbits between #Saturn and #Uranus also has one. So what exactly sets Quaoar's ring apart?
Related: Dwarf planets: science & facts about the solar system’s smaller worlds
Quaoar's ring is at a very unusual #distance from its parent body. In fact, before astronomers discovered Quaoar's ring in observations from several telescopes conducted between 2018 and 2021, they had thought that it was impossible for a ring to exist at such a distance. With a radius of about 2,420 miles (3,885 km) from Quaoar's center, the ring is too far away from the dwarf planet that its gravity should no longer be able to keep the material dispersed. Instead, it should coalesce under its own gravity and form another moon, just like Weywot. By not having done that, the ring has breached what astronomers call the Roche limit, the first known ring around a #celestial body to have done so.
"What is so intriguing about this discovery around Quaoar is that the ring of material is much farther out than the Roche limit," Giovanni Bruno, an astronomer at Italy's National Institute for Astrophysics (INAF) and one of the authors of the paper, said in a European #Space Agency (ESA) statement. "As a result of our observations, the classical notion that dense rings survive only inside the Roche limit of a planetary body must be thoroughly revised."
The ring was discovered during a series of occultations, essentially eclipses, when Quaoar passed between Earth and several more distant but much brighter stars. When an occultation occurs, the light of the background star temporarily dims. The effect is only visible to very sensitive telescopes and is frequently used to detect exoplanets orbiting stars in our Milky Way galaxy, which is why ESA's exoplanet hunter Cheops was among the telescopes watching these Quaoar occultations.
When astronomers analyzed the data, they realized that apart from the main dip in the background stars' brightness, they could detect two smaller drops. Since drops occurred before and after the main occultation, respectively, the researchers thought that Quaoar must be surrounded with a ring.
Several Earth-based telescopes also observed the occultations with similar results, but Cheops' data were particularly valuable as they proved that the odd dimmings were not caused by the effects of Earth's atmosphere.
https://www.space.com/mysterious-ring-around-dwarf-planet-puzzles-astronomers
Light Leap Years
https://xkcd.com/2897/
The song is okay, I guess, but the video is well done. Often I get bored in musicvideos but here the story has enough fancy pictures, haha.
https://www.youtube.com/watch?v=mkR4wjPC_0c
#lebanon_hanover #greece #distance #music #relationship #video #dezember2022
Occultation of Saturn by Moon🌙 Do you know the distance between the Moon and the Saturn?
Ce que nous portons et faisons porter aux #enfants depuis deux ans c'est un #bâillon #symbolique - #Campagnol
Le #masque et la #distance obligatoires ne sont-ils pas aussi et surtout des moyens d'entraver la circulation de la #vérité ? Plus elle apparaît par bribes derrière le récit #officiel et plus l'on comprend pourquoi il faut sortir #masqué pour n'en rien dire
https://www.youtube.com/watch?v=QNe7JSj3GUA
#politique #covid #macron #droite #zemmour
Arthur C. Clarke and the Paradox of Distance
What strikes me in the video linked below is that Clarke not only falls for the fallacy of the immolation of distance, but that his example, communications satellites, is actually an exemplar of this.
If you've ever talked over a satellite link, you're aware of the time lag, about 1 full second for a round-trip, which makes the interaction quite awkward. (Today's Zoom calls and even mobile phones with slow codecs show the effect with even smaller lags.) Our human wetware is quite attuned to local and realtime conversations, and even a delay of 100 ms or so starts straining the limits of our natural conversational flow.
Communications satellites are now almost completely avoided for any realitime voice, or more importantly, data communications, because of that very timelag. Instead they're used for non-realtime data, and even then, only where access to the preferred alternative is unavailable. What binds the world together today isn't comsats, but fibre, sinews of optical cord laid across landscapes and seascapes. Even where delays are undetectable by humans, data transmissions, and financial trading most especially, lives and dies on 10μs advantages in latency --- less than 3 km at lightspeed, and coicidentally quite close to the maximum size of a preindustrial city.
That effect is compounded at slower speeds and for other functions, such that cities today aren't less viable but more viable than they were in 1964. The largest cities don't number in the millions but the tens of millions. China has over 100 cities with more than one million in population_ (in the US the number is ten: New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Diego, San Antonio, Dallas, San Jose.) Wuhan is the city of eleven million you never heard of until 2020, very nearly larger than NYC and LA, combined.
What Clarke missed, and quite frankly what I did too until a couple of years ago, is that all the advantages technology affords at distance, it also affords close in. Plus all the other capabilities close proximity affords that cannot be provided at distance. It's subtle, but means that rather than decentralising, highly virtual activities tend to concentrate even more closely, as their limiting factors become the elements which are not virtualisable.
Technology is a power multiplier. Efficiencies breed monopolies.
You see this in film: cans, or digitally-distributed end-product can be sent around the world cheaply and easily. But it's the physical factors of productions which are fixed in physical space: sets, equipment, carpenters, speech coaches, costume designers, electricians, sound techs, equipment repair, and of course, the various back-office support teams who find in-person meetings to be vastly higher-bandwidth and lower-latency than the broadest and fastest of bands.
Or in banking, publishing, government, the technology sector itself, education (despite a century's efforts to virtualise, and another 500 years before through the virtualisation of the moveable-type press), music, fashion, and more.
Even in the physical world, cheap transport and multi-step, multi-location production does not result in parallel facilities available worldwide, but instead localised centres of specialisation, the failure of any one of which imperils a global supply chain. (See today's chip shortage, vaccine disruptions, and other similar examples.)
What provides localised redundancies are frictions, whether material or imposed. Film, mentioned earlier, is centered on its metonym, "Hollywood", but local film traditions, supported by language, culture, or government policy, emerge elsewhere, notably in the UK, France, Italy, Iran, India, China, and Japan. For many of these, production is largely for local consumption (though for India and China, a billion-strong local market rivals the rest of the world at least in headcount). Banking is regionalised in part by regulatory obligations. But markets such as cement manufacture, quarrying, dairy, and bread baking, and white-linen sit-down dining are constrained to locality by sheer mass of goods, cost of transport, or fragility or time-sensitivity of the product. (Many a food-delivery startup has discovered that there are only a few styles of dishes that survive even neighbourhood-based delivery, let alone regional, national, or international.)
I've been tracing the origins of the "technology and telecommunications will erase distance" fallacy. Much of the blame seems to fall on A.C. Clarke's shoulders.
https://invidious.snopyta.org/watch?v=wC3E2qTCIY8
#ArthurCClarke #telecomms #telecommunications #distance #ParadoxOfDistance #monopoly #centralisation #decentralisation
