Estes e outros milhares de relógios, canetas, jóias e outros objectos de luxo mostrados e explicados aqui, aqui ou aqui, no Relógios & Canetas online, a mais importante plataforma do seu género em língua portuguesa.
sábado, 17 de agosto de 2019
As canetas David Oscarson no Relógios & Canetas online
Estes e outros milhares de relógios, canetas, jóias e outros objectos de luxo mostrados e explicados aqui, aqui ou aqui, no Relógios & Canetas online, a mais importante plataforma do seu género em língua portuguesa.
Meditações - the cruel role that clocks have today
Sundials, hourglasses, and water clocks already existed in the ancient world, in the Mediterranean region and China—but they did not play the cruel role that clocks have today in the organization of our lives.
Carlo Rovelli
Carlo Rovelli
sexta-feira, 16 de agosto de 2019
Os relógios Qlocktwo no Relógios & Canetas online
a torre do relógio, Figueira da Foz
Almanaque Bertrand, 1963 - a torre do relógio, Figueira da Foz. Ver também aqui, (arquivo Fernando Correia de Oliveira)
Janela para o passado - há 120 anos - a peste bubónica no Porto e Guerra Junqueiro
Há exactamente 120 anos, era oficialmente declarada uma epidemia de peste bubónica no Porto. Guerra Junqueiro escreve por essa altura, e aproveitando o tema, um artigo anti-monáqrquico e pró-republicano - O Regímen.
Meditações - tarde de Agosto
[...] Tarde de Agosto. Ao
longe, fechando o horizonte que a eira dominava,
as arestas dos montes quebravam-se numa sombra
igual, e embaciavam ainda o poente as suaves,
brandas pulverizações doiradas da última luz do
Sol. Riscos vermelhos de nuvens, como grandes
vergas de ferro levadas ao rubro, destacavam
imóveis num fundo verde-mar, esvaecido e meigo,
raiado de listrões de uma coloração leve de laranja.
Pequenos algodões transparentes, com alvuras de
neve, cortavam aqui e além, alegremente, a
monotonia profunda do azul. Num deslado, sob os
castanheiros próximos, surgiam os telhados da
aldeia, a torre branca da igreja, as paredes caiadas
da escola.
Trindade Coelho, Os Meus Amores
Trindade Coelho, Os Meus Amores
quinta-feira, 15 de agosto de 2019
Os relógios Seiko no Relógios & Canetas online
Este MeisterSinger Edição Limitada Fado pode ser seu - Passatempo Anuário Relógios & Canetas
Habilite-se a este MeisterSinger automático, edição limitada Fado. Basta comprar a edição 2019 do Anuário Relógios & Canetas para poder participar no passatempo.
Meditações - viajar no tempo através de buracos negros
Christopher Nolan’s 2014 blockbuster movie takes time dilation to a new level and adds some weird science of its own—and Matthew McConaughey. When our hero Coop (McConaughey) blasts off for the stars, he leaves behind his 10-year-old daughter, Murph (Mackenzie Foy). “Time will change for me,” he explains. “It’ll run more slowly. When I get back we’ll compare.” She is a budding scientist herself. “You say science is about admitting what we don’t know,” she remarks wisely. By the time Cooper returns from his near-light-speed and black-hole travels, having aged hardly at all, Murph will have grown up to be Jessica Chastain, and then, at the end of the film, an even older Ellen Burstyn.
Interstellar deploys its own kinds of mumbo-jumbo—some ghosts from a hypothetical fifth dimension, for example—but it’s full to the brim with real science. They’ve got cryo-beds for deep sleep (speculative, but maybe possible); they’ve got counter-orbital slingshots for fancy gravitational dynamics; and, best of all, they’ve found what seems to be one end of a wormhole, which is a disturbance of spacetime.
Are wormholes real? Yes and no. The great theorist John Archibald Wheeler, who also named black holes, invented the word to describe a possible shortcut through the warped fabric of spacetime—a “handle of multiply connected space” that can be visualized as a tube or a tunnel. Later theorists, like Kip Thorne of Caltech, who won the Nobel Prize in physics this year, have speculated that a “traversable” wormhole could be used as a sort of time machine: If one end (“mouth”) of a wormhole could be accelerated by hypothetical “advanced beings” to near light speed, a hypothetical spaceship entering that mouth and exiting the other could be hurled backward to the past.
Thorne himself signed on to the movie as a producer and scientific advisor and worked hard to make everything theoretically plausible—up to a point. After all: How do you illustrate an event horizon? The script featured factual descriptions that likely challenged the special-effects team:
Just as the wormhole was a spherical hole, THESE SPHERES ARE HOLES WITHIN HOLES … we are dropping through A FOUR-DIMENSIONAL RABBIT HOLE – LIGHT/DARK/LIGHT/DARK/LIGHT/DARK with BLINDING RAPIDITY
… Cooper PLUNGES INTO THE WORLD SPHERE … As he falls his SINGLE WORLD LINE stretches behind him – the INFINITE FUTURES OF HIS WORLD LINE splitting ahead to all the different possibilities in spacetime.
Already sucked in by plausible physics, we may be too distracted to notice when the science gives way to plain old magic. To make the plot work out, for example, Coop needs to get a message back from the future to young Murph. He accomplishes this by reaching across time and flicking the second hand of an old wristwatch with the help of some hypothetical, invisible, presumably benign beings who live in the fifth dimension. Science!
James Gleick in Quartz, sobre Interstellar
Interstellar deploys its own kinds of mumbo-jumbo—some ghosts from a hypothetical fifth dimension, for example—but it’s full to the brim with real science. They’ve got cryo-beds for deep sleep (speculative, but maybe possible); they’ve got counter-orbital slingshots for fancy gravitational dynamics; and, best of all, they’ve found what seems to be one end of a wormhole, which is a disturbance of spacetime.
Are wormholes real? Yes and no. The great theorist John Archibald Wheeler, who also named black holes, invented the word to describe a possible shortcut through the warped fabric of spacetime—a “handle of multiply connected space” that can be visualized as a tube or a tunnel. Later theorists, like Kip Thorne of Caltech, who won the Nobel Prize in physics this year, have speculated that a “traversable” wormhole could be used as a sort of time machine: If one end (“mouth”) of a wormhole could be accelerated by hypothetical “advanced beings” to near light speed, a hypothetical spaceship entering that mouth and exiting the other could be hurled backward to the past.
Thorne himself signed on to the movie as a producer and scientific advisor and worked hard to make everything theoretically plausible—up to a point. After all: How do you illustrate an event horizon? The script featured factual descriptions that likely challenged the special-effects team:
Just as the wormhole was a spherical hole, THESE SPHERES ARE HOLES WITHIN HOLES … we are dropping through A FOUR-DIMENSIONAL RABBIT HOLE – LIGHT/DARK/LIGHT/DARK/LIGHT/DARK with BLINDING RAPIDITY
… Cooper PLUNGES INTO THE WORLD SPHERE … As he falls his SINGLE WORLD LINE stretches behind him – the INFINITE FUTURES OF HIS WORLD LINE splitting ahead to all the different possibilities in spacetime.
Already sucked in by plausible physics, we may be too distracted to notice when the science gives way to plain old magic. To make the plot work out, for example, Coop needs to get a message back from the future to young Murph. He accomplishes this by reaching across time and flicking the second hand of an old wristwatch with the help of some hypothetical, invisible, presumably benign beings who live in the fifth dimension. Science!
James Gleick in Quartz, sobre Interstellar
quarta-feira, 14 de agosto de 2019
Os relógios Omega no Relógios & Canetas online
O terror da "Cabra", 1905
Ilustração de livro de curso, de 1905, Universidade de Coimbra. Sobre a Cabra, ver também aqui. (arquivo Fernando Correia de Oliveira)
Meditações - o paradoxo dos gémeos
Thanks to Einstein, we have learned how to accomplish a certain kind of time travel: All you have to do is accelerate to near light speed or through a powerful gravitational field, and—for you—time will slow. Einstein called this Zeitdilatation: time dilation. It’s not as handy as a time machine; for one thing, there’s no going back. Instead, you could think of time dilation as an anti-aging technique. It leads to the so-called twins paradox thought experiment: The twin who zooms off at near-light speed returns home younger than the one who stays behind.
In his 1956 novel Time for the Stars, Robert Heinlein put time dilation to work as a plot device employing literal twins, Tom and Pat. Humanity urgently needs to explore the stars. (By the way, it needs to do so because Earth is grievously overpopulated: It has grown to the gargantuan level of 5 billion inhabitants.) So off Tom goes on a spaceship while Pat stays behind.
When Tom returns, a 22-year-old by his reckoning, Pat is a codger of 89, because 71 Earth years have passed. “Let me look at you,” says Pat. “I knew intellectually that you would not have changed with the years. But to see it, to realize it, is quite another thing, eh? The Picture of Dorian Gray.” Tom then marries his great-grandniece, and they live relativistically ever after.
James Gleick, in Quartz, sobre Time for the Stars, de Robert Heinlein
When Tom returns, a 22-year-old by his reckoning, Pat is a codger of 89, because 71 Earth years have passed. “Let me look at you,” says Pat. “I knew intellectually that you would not have changed with the years. But to see it, to realize it, is quite another thing, eh? The Picture of Dorian Gray.” Tom then marries his great-grandniece, and they live relativistically ever after.
James Gleick, in Quartz, sobre Time for the Stars, de Robert Heinlein
terça-feira, 13 de agosto de 2019
Os relógios IWC no Relógios & Canetas online
Há 140 anos - o relógio, 1879
Almanque de Lembranças, 1879, o relógio (arquivo Fernando Correia de Oliveira)
Meditações - H. G. Wells e a quarta dimensão
H. G. Wells was the first. He built a vehicle. “Parts were of nickel, parts of ivory, parts had certainly been filed or sawn of rock crystal… Quartz, it seemed to be.” His contraption had a bronze frame and a saddle for its rider. It looked closer to a bicycle than a sedan, which isn’t surprising: In 1895, the automobile barely existed.
Was it scientific? The Wells time machine has no evident source of fuel, or even pedals, but it did have some mysterious dials. You just throw the lever and off it goes. As Wells tries to persuade the skeptical reader in his pseudoscientific introduction, in order to believe in the time machine, you have to reconsider everything you thought you knew about time itself. You have to recognize that time is the fourth dimension.
“Well, I do not mind telling you I have been at work upon the geometry of Four Dimensions for some time,” the Time Traveller, the book’s nameless protagonist, solemnly explains. “There is no difference between Time and any of the three dimensions of Space except that our consciousness moves along it.”
We modern folk tend to agree. Nowadays everyone knows time is the fourth dimension—only no one knew it when Wells penned this tale, in 1895, while Albert Einstein was just a schoolboy in Munich. Wells thought his four-dimensional patter was in the category of mumbo-jumbo, little realizing that it was about to become real science.
James Gleick in Quartz, sobre The Time Machine, de H. G. Wells
Was it scientific? The Wells time machine has no evident source of fuel, or even pedals, but it did have some mysterious dials. You just throw the lever and off it goes. As Wells tries to persuade the skeptical reader in his pseudoscientific introduction, in order to believe in the time machine, you have to reconsider everything you thought you knew about time itself. You have to recognize that time is the fourth dimension.
“Well, I do not mind telling you I have been at work upon the geometry of Four Dimensions for some time,” the Time Traveller, the book’s nameless protagonist, solemnly explains. “There is no difference between Time and any of the three dimensions of Space except that our consciousness moves along it.”
We modern folk tend to agree. Nowadays everyone knows time is the fourth dimension—only no one knew it when Wells penned this tale, in 1895, while Albert Einstein was just a schoolboy in Munich. Wells thought his four-dimensional patter was in the category of mumbo-jumbo, little realizing that it was about to become real science.
James Gleick in Quartz, sobre The Time Machine, de H. G. Wells
segunda-feira, 12 de agosto de 2019
Os relógios Hublot no Relógios & Canetas online
Há 140 anos - O luxo, 1879
Almanque de Lembranças, 1879, o luxo (arquivo Fernando Correia de Oliveira)
Meditações - viajar no tempo
We time travel in our imaginations. We time travel in our storytelling. But we still want more. Would an actual time machine be too much to ask for? Can’t science come to our aid?
Science-fiction authors have a lot of experience in turning our time-twisting desires into realities. They naturally rely on a certain amount of—for want of a better term—mumbo-jumbo. That comes with the territory. But the best time-travel stories respect real science, too. The problem sometimes is telling which is which.
James Gleick in Quartz
Science-fiction authors have a lot of experience in turning our time-twisting desires into realities. They naturally rely on a certain amount of—for want of a better term—mumbo-jumbo. That comes with the territory. But the best time-travel stories respect real science, too. The problem sometimes is telling which is which.
James Gleick in Quartz
domingo, 11 de agosto de 2019
Os relógios Hermès no Relógios & Canetas online
Roubo de relógio, 1877
Almanque de Lembranças, 1877, roubo de relógio (arquivo Fernando Correia de Oliveira)
Meditações - nostalgia for futures that will never come
We’re all time travelers nowadays. We project ourselves mentally into the misty past and the risky future. We revisit and revise our memories. We invent possible futures and explore them with anticipation and desire. We’re temporal experts and manipulators; we have flashbacks and flashforwards and stop motion and instant replay and time gates and time shifting and time forks. Not content with nostalgia for the past that never was, we begin to feel nostalgia for futures that will never come.
James Gleick, in Quartz
James Gleick, in Quartz
sábado, 10 de agosto de 2019
Os relógios Frederique Constant no Relógios & Canetas online
Hidrocronómetro em Roma, 1877
Almanque de Lembranças, 1877, relógio de água (arquivo Fernando Correia de Oiveira)
Meditações - time is mostly something that happens now in our head
Without a record—or memory—and expectations of continuation, we would not experience time’s passage or even know who we are. Time, then, is an emotional and psychological experience. It’s loosely connected with external reality,but it is mostly something that happens now in our head.
Carlo Rovelli
Carlo Rovelli
sexta-feira, 9 de agosto de 2019
Os relógios Breitling no Relógios & Canetas online
Humor relojoeiro - Relógio alcoólico, 1887
Almanaque de Lembranças, 1887, relógio alcoólico (arquivo Fernando Correia de Oliveira)
Relógios únicos para o leilão Only Watch
Meditações - o tempo como ilusão colectiva
Basically, time is a story we’re always telling ourselves in the present tense, individually and together. It’s a collective act of introspection and narrative, record-keeping and expectation, that’s based on our relationship to prior events and the sense that happenings are impending. It is this tale that gives us our sense of self as well, a feeling that many neuroscientists, mystics, and the physicist argue is a mass delusion.
Carlo Rovelli
Carlo Rovelli
quinta-feira, 8 de agosto de 2019
Os relógios Blancpain no Relógios & Canetas online
Equação do Tempo, 1877
Almanque de Lembranças, 1877, Equação do Tempo (arquivo Fernando Correia de Oliveira)
Cartier incentiva empreendedorismo feminino
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