LuciocEssa thread é hilária para ver as coisas que as pessoas mais revoltadas escrevem, algumas *realmente* ficaram furiosas de ver esse ou aquele filme.
I want to know what you guys think is the absolute worst movie of the entire year. Please say a movie you have actually seen instead of bagging on a movie you just heard was bad. Personally, After Earth was easily the worst movie of the year. All of the acting was terrible, the plot was dumb and boring, the effects were lazy and poorly done, and nothing interesting happened in the entire movie.
LuciocDa série "backupeiem seus dados".
LuciocGostei do comentário falando que "People are told from very early in life that in order to be successful, they need to go to bed early and wake up early and that staying up and sleeping in makes them lazy.
Smart people know that that's utter bullshit, and are therefore more likely to stay up late and sleep in."
Nunca entendi o ditado do "Deus ajuda a quem cedo madruga".
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submitted by CennoxX [link] [278 comments] |
LuciocDesconfio que essa coisa demoraria milhões de anos para acelerar apreciavelmente um sistema planetário inteiro. De qualquer forma, acho que um candidato óbvio para detectar esse tipo de estrutura (o que acho que nunca vai acontecer =) seriam estrelas rápidas, dessas que estão deixando a Via Láctea a velocidades mais altas que o normal.
Although I didn’t write about the so-called ‘Shkadov thruster’ yesterday, it has been on my mind as one mega-engineering project that an advanced civilization might attempt. The most recent post was all about moving entire stars to travel the galaxy, with reference to Gregory Benford and Larry Niven’s Bowl of Heaven (Tor, 2012), where humans encounter an object that extends and modifies Shkadov’s ideas in mind-boggling ways. I also turned to a recent Keith Cooper article on Fritz Zwicky, who speculated on how inducing asymmetrical flares on the Sun could put the whole Solar System into new motion, putting our star under our directional control.
The physicist Leonid Shkadov described a Shkadov thruster in a 1987 paper called “Possibility of Controlling Solar System Motion in the Galaxy” (reference at the end). Imagine an enormous mirror constructed in space so as to reflect a fraction of the star’s radiation pressure. You wind up with an asymmetrical force that exerts a thrust upon the star, one that Shkadov believed could move the star (with accompanying planets) in the event of a dangerous event, like a close approach from another star. Shkadov thrusters fall into the category of ‘stellar engines,’ devices that extract significant resources from the star in order to generate their effect.
Image: A Shkadov thruster as conceived by the artist Steve Bowers.
There are various forms of stellar engines that I’ll be writing about in future posts. But to learn more about the ideas of Leonid Shkadov, I turned to a recent paper by the always interesting Duncan Forgan (University of Edinburgh). Forgan points out that Shkadov thrusters are not in the same class as Dyson spheres, for the latter are spherical shells built so that radiation pressure from the star and the gravitational force on the sphere remain balanced, the purpose being to collect solar energy, with the additional benefit of providing vast amounts of living space.
Where Shkadov thrusters do remind us of Dyson spheres, as Forgan notes, is in their need for huge amounts of construction material. The scale becomes apparent in his description, which is clarified in the diagram below:
A spherical arc mirror (of semi-angle ψ) is placed such that the radiation pressure force generated by the stellar radiation field on its surface is matched by the gravitational force of the star on the mirror. Radiation impinging on the mirror is reflected back towards the star, preventing it from escaping. This force imbalance produces a thrust…
Here I’m skipping some of the math, for which I’ll send you to the preprint. But here is his diagram of the Shkadov thruster:
Figure 1: Diagram of a Class A Stellar Engine, or Shkadov thruster. The star is viewed from the pole – the thruster is a spherical arc mirror (solid line), spanning a sector of total angular extent 2ψ. This produces an imbalance in the radiation pressure force produced by the star, resulting in a net thrust in the direction of the arrow.
Forgan goes on to discuss the effects of the thruster upon the star:
In reality, the reflected radiation will alter the thermal equilibrium of the star, raising its temperature and producing the above dependence on semi-angle. Increasing ψ increases the thrust, as expected, with the maximum thrust being generated at ψ = π radians. However, if the thruster is part of a multi-component megastructure that includes concentric Dyson spheres forming a thermal engine, having a large ψ can result in the concentric spheres possessing poorer thermal efficiency.
The sheer size of Dyson spheres, Shkadov thrusters and other stellar engines inevitably makes us think about such constructions in the context of SETI, and whether we might be able to pick up the signature of such an object by looking at exoplanet transits. Richard Carrigan is among those who have conducted searches for Dyson spheres (see Archaeology on an Interstellar Scale), but Forgan thinks a Shkadov thruster should also be detectable. For the light curve produced by an exoplanet during transit would show particular characteristics if a Shkadov thruster were near the star, a signature that could be untangled by follow-up radial velocity measurements.
The chances that we might pick up a transit showing clear signs of extraterrestrial engineering seem remote, but Forgan’s point is that we have numerous exoplanet surveys in progress, ranging from analysis of the Kepler data (with a recent SETI component factored in) to future surveys using the TESS and PLATO instruments, each intended to undergo radial velocity scrutiny as a follow-up to any detections. The GAIA satellite will also provide useful data for possible follow-ups of transit candidates. With all this in the mix, Forgan wants to clarify what a Shkadov thruster would look like if by whatever chance we do find one in our data.
The presence of a Shkadov thruster, he demonstrates, can be flagged by study of the lightcurve of both transiting planet and thruster, with the possibility that both the primary and secondary eclipses can be affected. It would be a tricky catch even so, for transient phenomena like starspots can mask features in the lightcurve, and Forgan thinks that further radial velocity studies, along with interferometric imaging and asteroseismology would have to come into play to tease out the features of such a thruster. Missions designed to study exoplanet atmospheres — he mentions CHEOPS or EChO — could be used to confirm the thruster’s presence.
A long shot indeed, but it’s good to have this study of those features that would flag a lightcurve as anomalous and indicative of advanced engineering. For while the probabilities of finding a Shkadov thruster are remote, we’ll have a growing number of datasets from various exoplanet missions to draw on. Interstellar archaeology is all about digging into this rich stratum to see whether any observed events fit models that suggest the presence of artificial objects. And today’s exoplanet catalogue only hints at the volumes of information still to come.
The paper is Forgan, “On the Possibility of Detecting Class A Stellar Engines Using Exoplanet Transit Curves,” accepted for publication in the Journal of the British Interplanetary Society (preprint). Leonid Shkadov’s paper on Shkadov thrusters is “Possibility of controlling solar system motion in the galaxy,” 38th Congress of IAF,” October 10-17, 1987, Brighton, UK, paper IAA-87-613. More on stellar engines in coming weeks.
LuciocYay, um robô-aranha! Lembro de robôs-insetos com seis pernas, mas acho que é o primeiro que vejo com um design aracnídeo de oito...
My name is Don Arachno, I’m the king of latin samba,
The ladies see me dancing, and they’re shrieking ¡ay caramba!
Alas, I am but robot, and must seek upon my honor
One special dancing partner, whose name is Sarah Connor
Please tell me that thing on the front dispenses tequila, Wendy M.
LuciocAs armas-gambis do carinha são AWESOME! Tem também um arco-e-flecha...
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submitted by johnysmote [link] [6 comments] |
LuciocAgora vou ter de arranjar um cilindro transparente para os meus gatos entrarem, dammit!
“These are photos I took of Spider-Man, a cute kitteh up for adoption at the SPCA of Central Florida in Orlando, FL. (His ID # is 191812 if anyone’s interested in adopting!) He was a little camera shy… but didn’t realize the paparazzi can see right through his hiding spot!” -Kristen F.
LuciocO "grupo muito forte" deve ser o governo federal. Corre a boca pequena que o Pizzalato arranjou os meios de jogar a merda toda no ventilador se fosse preso ou se "sofresse um acidente".
LuciocPode ir para a lista de "Porque Churchill era um asshole". Porém, considerando COMO o Stahlin matava gente, e COMO a Guerra Fria como um todo matou gente e destruiu países, talvez uma realidade alternativa onde isso efetivamente aconteceu tivesse sido um mundo melhor.
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submitted by auroch27 [link] [406 comments] |
LuciocQue mêda! Quando eu era criança, de vez em quando apareciam esses personagens com risos grotescos de Coringa nos meus sonhos, eram bem assustadores. Curiosamente, também tinham uma tendência de me perseguir e querer me agarrar. Por algum motivo, isso parou depois de acontecer depois de velho.
I would like to hear some interpretations on this odd nightmare I had last night.
I was in a spacious old fashioned house, Victorian like and it got dimmer and decrepit over time. I heard an announcement "She kills the adults but makes the young kill her" so I went into a corner of the room and saw a shadow pass the door and come back to find me in the room and it was a very attractive women in her undergarments and she dashed across the room to me and I saw she had the most sinister and exaggerated joker like smile that did not change.
Within a second after passing the door and finding me she dashed to me, put a knife (which turned into a piercing metal needle) in my hand and made me stab her through her forehead. The smile didn't change, it was as if the body was in pain but the face was the same so while being utterly disturbed and not sure if she was dead or not I repeatedly stabbed her through the head and woke up.
LuciocFuck. Acho melhor prestar atenção na cotação do dólar nos próximos meses...
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submitted by chiguy [link] [45 comments] |
LuciocBreaking Bad para mim. Felizmente, daqui a alguns meses ele vai quase sumir do inconsciente coletivo e vão parar de me encher para assistir. 8-)
You know what I'm talking about. Everyone has a show that it seems like the whole planet is in love with and even though you keep telling people that it's "on the list" the chances of you ever watching the show is greater than Fox News going liberal.
Lucioc"O Ministério Público (...) argumentou que a atividade das empresas é ilícita, porque estão licenciadas para hotéis, mas funcionam como casas de prostituição."
Ah, quer dizer que agora existe um alvará para puteiros que podemos tirar no BH Resolve?
LuciocA mesma notícia, desta vez com o povo mais escalafobético do r/collapse . No comentários mencionam que os chineses nos últimos tempos vêm comprando shitloads de ouro e... bitcons!
LuciocCuriosamente, os estados com melhor situação fiscal e melhores indicadores sociais são assustadoramente rednecks - coisss como Iowa e Nebraska. Utah é uma terra de dementes religiosos que mandam meninos mórmons bater na nossa porta na manhã de domingo aqui no Brasil, e está em quinto lugar.
A California sai como o estado mais fudidamente governado pelo terceiro ano consecutivo. Bizarramente, bate com achismos anedóticos que ouvi por lá: em San Francisco o povo falava que a cidade (e o Vale do Silício em volta) são um mundo à parte, e que se eu atravessasse as pontes e fosse mais para os fundões da California ia ver uns lugares piores que Detroit...
Lucioc"Já o consórcio AeroBrasil, que arrematou Confins, é formado pelas empresas Companhia de Participações em Concessões CPC, que é controlada pela CCR (75%), Zurich Airport International AG (24%) e Munich Airport International Beteiligungs GMBH (1%)."
Yay, os alemães compraram a Rodoviária de Confins! É o alvorecer de uma nova era! (Or so I hope.)
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submitted by BecomingFree [link] [4 comments] |
LuciocMas gostei muito mais do projeto alemão demente da Atlantropa - http://en.wikipedia.org/wiki/Atlantropa - que consistiria em represar o Estreito de Gibraltar, esvaziar o Mar Mediterrâneo e criar milhões de quilômetros de terra nova. (Como diz o Lex Luthor, "terra é a única coisa que não fabricam mais" - até esvaziarem o Mediterrâneo ou terraformarem Marte, é claro.)
A bem da verdade, desconfio que o solo do fundo do mar deve ser salgado e horroroso para agricultura, e tenderia a ser quente pra burro porque seria uma depressão com o Saara do lado. Também nem quero pensar no potencial caos que causaria nos padrões climáticos da Europa e África. Finalmente, os Europeus ficariam com nojinho dos milhões de imigrantes africanos que iriam correndo estilo "ESTAMOS SAAAAAAALVOS!!!' por terra para o continente muito mais rico ao norte.
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submitted by Zidden [link] [168 comments] |
LuciocWE DIDN'T LISTEN!!!
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submitted by Holyetheline [link] [4 comments] |
LuciocCute. Pena que por enquanto é muito pequena e não parece lá muito habitável, precisa ser "terraformada"...
LuciocSharado pelo mapinha mostrando a trajetória maluca que a navezinha faria levando o casal de doidos. Apesar de ir para Marte, na vinda ela passaria na altura da órbita de Vênus...
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submitted by stagefight [link] [42 comments] |
LuciocEu já ia falar que tenho ainda alguma esperança de que a Cientologia, digo o PT, não vai virar assim um partido único eterno porque ele é centrado num culto de personalidade a uma figura "carismática" que eventualmente vai morrer. Mas aí lembrei que esse tipo de partido tem o péssimo hábito de manter políticos importantes mesmo após a morte - veja as fotinhas de Mao pela China toda, as múmias de Lênin e Stalin, etc.
LuciocDeve explicar porque os remédios chineses malucos feitos com coisas absurdas e caríssimas tipo chifre de rinoceronte ainda são procurados.
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submitted by avanoo [link] [496 comments] |
Lucioc"The man was lying on a tree stump, masturbating beside a nature path, near a Bay Area Rapid Transit station Thursday, police said."
"he told them he had a tool in his rectum, authorities said."
Ok, esse é definitivamente um caso de "Only in San Francisco", embora El Cerrito seja do outro lado da baía e eu pensei que fosse menos afetada pelo Campo de Falta de Noção.
Lucioc"Rainha faz extorsão para tirar Dirceu da cadeia".
(Não vejo uma relação de causa e efeito muito boa entre as duas coisas, mas enfim...)
Lucioc"Petistas, juristas, personalidades e familiares dos condenados no mensalão divulgaram um manifesto"
Ha, ha. Para rebater na mesma moeda cínica, posando de vítima também, o Joaquim Barbosa devia play the race card e dizer "vocês só estão soltando manifesto porque eu sou preto!". ;)
(Mas ele parece ranzinza e sério demais para sarcasmo e ironia.)
LuciocPercepções interessantes dum franceba. Deve fazer mais sentido para o Girino, que vai entender porque algumas coisas soam tão alienígenas para ele. 8-)
Lucioc"A Polícia Militar (PM) não soube informar qual a categoria responsável pelo protesto."
O problema dessas passeatas de comunistas safados é que o meme de bandeiras vermelhas é tão batido que não tem mais brand recognition nenhuma. ;)
LuciocToda vez que eu vejo esses posts libertários reclamando do tamanho do governo no Zuza eu penso que eles devem achar que o Brasil está só um fio de cabelo acima da Rússia Stalinista e da Coréia do Norte.
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submitted by Don_Coyote_ [link] [32 comments] |
LuciocProvavelmente os bancos têm algum termo similar para pessoas que não deixam empréstimos virar bolas de neve...
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submitted by Afghan_Whig [link] [294 comments] |