terça-feira, 23 de dezembro de 2014

The Physics of Christmas



Below is a scientific listing of some of the concepts of the holidays that many people, especially youths have accepted as true.  Lets take a look…

1. No known species of reindeer can fly (there are 300,000 organisms yet to be classified, most are insects and germs, this does not rule out flying reindeer)
2. There are about 2 billion children (persons under 18) in the world.
3. “Santa” doesn't (appear) to handle the Muslim, Hindu, Jewish and Buddhist children.
4. This reduces the workload to 15% of the total - 300 million kids.
5. On average, there are 3.5 children per household. Read more.

segunda-feira, 22 de dezembro de 2014

Researchers solve the mystery of how humans evolved colour vision


After two decades of work, an international team of researchers has discovered how humans evolved to see all the colours of the rainbow. By figuring out how our ancestors swapped ultraviolet (UV) vision for blue-light (or violet) vision, they have finally pieced together a timeline for one of our species' most defining features.
"We have now traced all of the evolutionary pathways, going back 90 million years, that led to human colour vision," lead author and biologist, Shozo Yokoyama from Emory University in the US, said in a press release. "We've clarified these molecular pathways at the chemical level, the genetic level and the functional level." Read more.

Schlechtes Timing


Tyrrhenian Sea and Solstice Sky

Image Credit & Copyright: Danilo Pivato

sexta-feira, 19 de dezembro de 2014

NASA’s Kepler Reborn, Makes First Exoplanet Find of New Mission

ASA's planet-hunting Kepler spacecraft makes a comeback with the discovery of the first exoplanet found using its new mission -- K2. The discovery was made when astronomers and engineers devised an ingenious way to repurpose Kepler for the K2 mission and continue its search of the cosmos for other worlds. Read more.

Schönes Weihnachten!


terça-feira, 16 de dezembro de 2014

Why is it Harder to Drive Backwards?


Supraleiter-Rekord unter Druck gebrochen

 An Schwefelwasserstoff beobachten Forscher Supraleitung bei bisher nicht erreichten Temperaturen. Die Messungen kommen überraschend und lassen auf eine neue Klasse widerstandsloser Materialien hoffen. Mehr lesen.

:)


quinta-feira, 4 de dezembro de 2014

New material uses the cold darkness of the Universe to cool your house

Engineers from Stanford University in the US have created a material that keeps your house cool by beaming heat back into the “cold darkness of the Universe”.
The material reflects sunlight, just like a regular mirror, but most importantly, it also beams heat from inside a building straight into outer space. This means that it lowers the temperature of anything that’s it’s placed on by up to five degrees, even if it’s sitting in direct sunlight - and all without electricity. Read more.

Supersonic micro-bullets show graphene would make great body armour


Beautiful Photos Show the Bizarre Behavior of Liquids

http://www.wired.com/2014/12/liquid-phenomena/?mbid=social_fb#slide-id-1666405

terça-feira, 25 de novembro de 2014

Study Investigates How Men and Women Adapt Differently to Spaceflight

In 2011, a report from a National Academy of Sciences’ decadal survey emphasized the need to examine and understand the influences that sex and gender have on physiological and psychological or behavioral changes that occur during spaceflight. In response, NASA and NSBRI assembled six workgroups to investigate and summarize the current body of published and unpublished human and animal spaceflight research data. The groups focused on cardiovascular, immunological, sensorimotor, musculoskeletal, reproductive and behavioral implications on spaceflight adaptation for men and women. In June 2013, NASA and NSBRI hosted a virtual workshop to present the groups’ findings. The Journal of Women's Health published the manuscripts in the Nov. 2014 issue, available here.

segunda-feira, 24 de novembro de 2014

Soaring Over Titan: Extraterrestrial Land of Lakes


Could We Actually Live On Mars?


This week in science


segunda-feira, 17 de novembro de 2014

Cats and Chemistry :)


Chemistry meets Physics


domingo, 16 de novembro de 2014

Große Physik ganz klein


Manche Experimente sind schlicht undurchführbar: Für die einen müsste der weltgrößte Teilchenbeschleuniger noch hundertmal größer sein, für andere bräuchte man gar ein Schwarzes Loch. Doch es gibt analog funktionierende Systeme, die auf einen Labortisch passen und trotzdem Erkenntnisse versprechen. Mehr lesen.

Leonids Above Torre de la Guaita

Image Credit & Copyright: Juan Carlos Casado (TWAN)

quarta-feira, 12 de novembro de 2014

Estreia espacial: missão Rosetta poisa hoje num cometa



O módulo Philae, que nos últimos dez anos viajou através do espaço agarrado à sonda Rosetta, foi acordado com êxito na segunda-feira, pelos controladores do ESOC, o centro de controlo da ESA, a agência espacial europeia, em Darmstadt, na Alemanha. Hoje, se não houver más surpresas, o pequeno módulo de aterragem da missão, com os seus cem quilos de sensores e instrumentação científica, vai protagonizar uma manobra arriscada, e nunca antes tentada: a primeira aterragem de sempre de um engenho espacial na superfície de um cometa, o Tchourioumov-Guérassimenko. Ler mais.


quinta-feira, 6 de novembro de 2014

ALMA revela a melhor imagem do nascimento de planetas

 Astrónomos capturaram a melhor imagem da formação de planetas à volta de uma jovem estrela com o ALMA, o Atacama Large Millimeter Array, um poderoso telescópio localizado no deserto de Atacama, Chile.
A imagem mostra a formação do disco protoplanetário à volta de HL Tau, uma estrela parecida com o nosso Sol, localizada a 450 anos-luz da Terra, na constelação de Touro. No disco são visíveis anéis brilhantes, separados por espaços. Ler mais.

Até ao infinito e mais além



Quando é que, enquanto espectadores, deixámos de ter a capacidade de nos maravilhar, de ver as coisas sem segundas intenções, sem pensarmos duas vezes se “gostamos” se “não gostamos”, se “seguimos” ou se “amigamos”? Quando é que perdemos aquele olhar, arregalado, deslumbrado, que tivemos perante o desconhecido, o nunca visto? Será que é ainda sequer possível recuperá-lo?
É a pergunta que faz Christopher Nolan em Interstellar e, para lá de toda e qualquer opinião que se possa ter sobre o filme, é essa a chave que “abre” o “hiper-cubo” de leituras que ele permite. Não é por acaso que a viagem interestelar que lhe está no centro é uma “última oportunidade” para uma Terra moribunda, que parte em direcção de um território onde só se chega transgredindo as leis tradicionais da física. Ler mais.

terça-feira, 4 de novembro de 2014

quinta-feira, 30 de outubro de 2014

This ferrofluid artwork follows you until you look at it

If you gaze into the abyss, the abyss also gazes into you. Or, in this case, an adorable, minimalist facsimile of a face, rendered in patches of ferrofluid -- nanoparticles of ferromagnetic material suspended in a carrier liquid.
And you don't have to do the first gazing, either: Eye Catcher, a project by Lin Zhang and Ran XieInteractive Architecture Lab at University College London, is desperate for your attention; so much so that the artwork will slide along the wall next to a passerby, hoping to catch their attention, seemingly suspended by magic. When they stop to look, two spots -- like eyes -- rise out of the puddle of ferrofluid at the bottom of the frame to look back. Read more.

Frauen sind immer praktisch :)


The chemistry of the different colours of Blood


segunda-feira, 27 de outubro de 2014

The periodic table of TED-Ed



TED-Ed launched a clickable periodic table with videos on every element. This work is a fruit of a partnership between TED-Ed and Brady Haran, the creator of the popular YouTube channel Numberphile. Read more.

Parachutist’s Record Fall: Over 25 Miles in 15 Minutes

 
 A well-known computer scientist parachuted from a balloon near the top of the stratosphere on Friday, falling faster than the speed of sound and breaking the world altitude record set just two years ago.
The jump was made by Alan Eustace, 57, a senior vice president of Google. At dawn he was lifted from an abandoned runway at the airport here by a balloon filled with 35,000 cubic feet of helium. Read more.

quarta-feira, 22 de outubro de 2014

Your life on earth


 Explore BBC Earth's unique interactive, personalised just to you.
Find out how, since the date of your birth, your life has progressed; including how many times your heart has beaten, and how far you have travelled through space.
Investigate how the world around you has changed since you've been alive; from the amount the sea has risen, and the tectonic plates have moved, to the number of earthquakes and volcanoes that have erupted.

terça-feira, 21 de outubro de 2014

Take a moment with Coldplay - The Scientist


sexta-feira, 17 de outubro de 2014

Lockheed Martin: Compact Fusion Research & Development


Levitating Building Gobsmacks Londoners

The giant optical illusion is actually the work of British artist Alex Chinneck, whose previous architectural riffs have included flipped townhouses and sliding facades. Read more.

Rosetta’s journey and timeline


sexta-feira, 10 de outubro de 2014

NASA Invites Public to Send Your Name to Mars – Starting on Orion’s First Flight

Here’s your chance to participate in NASA’s ‘Journey to Mars’ and the first flight of the new Orion spacecraft that will eventually transport humans to the Red Planet.
NASA invites you to send your name to Mars. And the adventure starts via the first Orion test flight dubbed Exploration Flight Test-1 (EFT-1) scheduled for blastoff on December 4, 2014, from Cape Canaveral in Florida. Read more.



terça-feira, 7 de outubro de 2014

Physicists who changed the lightbulb win Nobel Prize

In a choice that surprised Nobel watchers, this year's physics prize is going to three Japanese scientists not for a basic discovery, as is typical, but rather for an invention: the blue light-emitting diode (LED). The Nobel committee recognized three researchers as contributing equally to the breakthrough: Isamu Akasaki of Meijo University in Nagoya and of Nagoya University; Hiroshi Amano of Nagoya University; and Shuji Nakamura, now of theUniversity of California, Santa Barbara. Read more.

Do I Only Use 10% of My Brain?

https://www.youtube.com/watch?v=1oJR6Di0Eck

Do We Use Only 10% of Our Brains?

 



Does My Voice Really Sound Like That?

Sorry, your voice actually DOES sound like that in real life. :) This is why.


quinta-feira, 2 de outubro de 2014

What Are The Odds Of You Becoming Exactly You?


“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.” - Carl Sagan
The odds of getting struck by lightning during your lifetime are about 1 in 12,000.
While this explanation does make a fair amount of assumptions, take a look at some of the incredible ways that conditions in the universe came together to make you exactly you. Read more.



quarta-feira, 1 de outubro de 2014

Painted Saturn

http://www.nasa.gov/jpl/cassini/pia18280/#.VCqmsVb8cjx

5 Great Space Explorers (Who Weren’t Human)

Animals have always been there to brave new worlds and cross the boundaries of knowledge…whether they wanted to or not. In other words, they have always been used to try out new things to see how dangerous they were for humans. Aeronautic exploration was no different. Ever since the time of the Montgolfier brothers and their hot air balloon, animals have been sent up as high as possible before humans. Read more.

terça-feira, 30 de setembro de 2014

Pluto's a planet, according to a new public debate


Scientists got together last week in the US to battle it out over what actually makes a planet, and where poor old Pluto fits into everything. Thanks to a popular vote, the argument for Pluto being a planet came out on top. Read more.

segunda-feira, 29 de setembro de 2014

Where Did Earth's Water Come From?


sexta-feira, 26 de setembro de 2014

13 Misconceptions About Global Warming


Touché!


How to Never Miss an Aurora



I'm often asked when is the best time to see the northern lights. I usually point out that they're connected to solar flares and vast eruptions of solar plasma called coronal mass ejections or CMEs. While these violent events and the auroras they spawn are more common during the peak of the sunspot cycle, they're liable to happen anytime and can be as unpredictable as earthly weather.
Not a very satisfying answer, I'll admit. But before you throw up your arms and seek another seer, allow me to arm you with several essential tools. If consulted regularly, I guarantee your chances of seeing an aurora will be maximized. Read more.

I'm often asked when is the best time to see the northern lights. I usually point out that they're connected to solar flares and vast eruptions of solar plasma called coronal mass ejections or CMEs. While these violent events and the auroras they spawn are more common during the peak of the sunspot cycle, they're liable to happen anytime and can be as unpredictable as earthly weather.
Not a very satisfying answer, I'll admit. But before you throw up your arms and seek another seer, allow me to arm you with several essential tools. If consulted regularly, I guarantee your chances of seeing an aurora will be maximized. Don't flog me if clouds show up. They're not part of the deal.
- See more at: http://www.skyandtelescope.com/astronomy-news/observing-news/sleuth-aurora-09252014/#sthash.Y1RpAeJ9.dpuf
I'm often asked when is the best time to see the northern lights. I usually point out that they're connected to solar flares and vast eruptions of solar plasma called coronal mass ejections or CMEs. While these violent events and the auroras they spawn are more common during the peak of the sunspot cycle, they're liable to happen anytime and can be as unpredictable as earthly weather.
Not a very satisfying answer, I'll admit. But before you throw up your arms and seek another seer, allow me to arm you with several essential tools. If consulted regularly, I guarantee your chances of seeing an aurora will be maximized. Don't flog me if clouds show up. They're not part of the deal.
- See more at: http://www.skyandtelescope.com/astronomy-news/observing-news/sleuth-aurora-09252014/#sthash.Y1RpAeJ9.dpuf

Are chemicals really bad for you?


segunda-feira, 22 de setembro de 2014

Antimatter Explained


sábado, 20 de setembro de 2014

Teilchenphysik: Auf der Spur des mysteriösen Neutralinos


Tau-Neutrino, Strange Quark, Gluon - exotische Elementarteilchen kennen Physiker jede Menge. Zuletzt sorgte das am Cern-Beschleuniger in Genf aufgespürte Higgs-Boson für Schlagzeilen. Nun berichten Forscher über Hinweise auf ein bislang nur in der Theorie bekanntes Teilchen mit dem Namen Neutralino, das laut dem Partikelmodell der Physiker zur rätselhaften Dunklen Materie gehört. Mehr lesen.

The Comet That Outgrew The Sun

http://www.iflscience.com/space/comet-outgrew-sun

Supercool metals make light iPhone cases that are 50 times harder than plastic


Researchers at Yale University in the US have created a thin, lightweight smartphone case that’s harder than steel but as easy to shape as plastic. The case is made from bulk metallic glass (BMG) - a class of strong but flexible materials that have been around for years but, until recently, engineers have struggled to find a way to shape them into useful structures. Read more.

quinta-feira, 18 de setembro de 2014

O ALMA observa origem violenta de galáxias de disco

Durante décadas os cientistas acreditaram que da fusão de galáxias resultavam geralmente galáxias elípticas. Agora, e pela primeira vez, os investigadores, com o auxílio do ALMA e um conjunto de outros rádio telescópios, descobriram evidências diretas de que as galáxias em fusão podem também dar origem a galáxias de disco e que este fenómeno é até bastante comum. Este resultado surpreendente pode explicar porque é que existem tantas galáxias em espiral como a Via Láctea no Universo. 
Uma equipa de investigação internacional liderada por Junko Ueda, pós-doutorando da Sociedade Japonesa  para a Divulgação da Ciência,  fez observações surpreendentes que mostram que a maioria das colisões galácticas no Universo próximo - entre 40 e 600 milhões de anos-luz de distância da Terra - dão origem às chamadas galáxias de disco. As galáxias de disco - que incluem as galáxias em espiral como a Via Láctea e as galáxias lenticulares - definem-se como possuindo regiões de gás e poeira em forma de panqueca e são bastante diferentes da categoria das galáxias elípticas. Ler mais.

Astronomy Detectives Reveal Origin of Monet's 'Impression' Painting

Astronomical clues could pinpoint the day Claude Monet painted "Impression, Soleil Levant (Impression, Sunrise)," the art piece that lent its name to the Impressionist art movement.
Based on the celestial detective work of Donald Olson, a Texas State University astronomer and physics professor, curators think they've identified the moment that Monet attempted to capture from his hotel room in the city of Le Havre, France: Nov. 13, 1872, 7:35 a.m. Read more.

terça-feira, 16 de setembro de 2014

Magnetism and quantum mechanics



Think you understand magnets? Scientists have realised over the past century that, despite what we thought we knew, magnetism is nothing but quantum mechanics.  Read more.

segunda-feira, 15 de setembro de 2014

The Secret Social Life of Plants


TED talk: All it takes is 10 mindful minutes



When is the last time you did absolutely nothing for 10 whole minutes? Not texting, talking or even thinking? Mindfulness expert Andy Puddicombe describes the transformative power of doing just that: Refreshing your mind for 10 minutes a day, simply by being mindful and experiencing the present moment. (No need for incense or sitting in uncomfortable positions.) 

First Map of Rosetta's Comet

http://orbiterchspacenews.blogspot.co.at/2014/09/first-map-of-rosettas-comet.html?spref=fb

sexta-feira, 12 de setembro de 2014

Physicists capture the sound of an atom



For the first time, scientists have used sound to communicate with an artificial atom, demonstrating a curious phenomenon in quantum physics that sees sound waves take on the role of light. Read more.

Why Do We Have More Boys Than Girls?


Immer online


Dupla explosão solar rara a caminho da Terra




Uma rara explosão dupla de tempestades solares magneticamente carregadas atingirá a Terra, durante quinta-feira, nos EUA, madrugada em Portugal, e de sexta-feira. As autoridades temem que as comunicações por rádio, transmissões de energia e sinais de GPS possam ser afetados. Ler mais.

segunda-feira, 8 de setembro de 2014

Perspective

"The universe seems neither benign nor hostile, merely indifferent." - Carl Sagan

Time Travel Simulation Resolves “Grandfather Paradox”


What would happen to you if you went back in time and killed your grandfather? A model using photons reveals that quantum mechanics can solve the quandary—and even foil quantum cryptography. Read more. 

Happy Monday Coffee Lovers!


Is Coffee Bad For You? Coffee has both positive and negative effects on the body and mind, but the benefits appear to outweigh the dangers for most people. Read more.

In the mood for love



Why do we fall in love? And what is love, anyway? 10 TED talks to help us understand the mystery of love.

European Planetary Science Congress 2014


07 – 12 September 2014
Centro de Congressos do Estoril, Cascais, Portugal

As with the highly successful meeting in London in 2013, which attracted 960 attendees (the largest yet for an all European EPSC), it will provide an attractive platform to exchange and present results, develop new ideas and to network the planetary science community in Europe. It will continue to have a distinctively interactive style, with a mix of talks, workshops and posters, intended to provide a stimulating environment for the community to meet. The meeting will cover the whole scope of planetary science. Read more.

This Week in Science


quinta-feira, 4 de setembro de 2014

Airglow Ripples over Tibet

Image Credit & Copyright: Jeff Dai