Guilherme Davies

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Forget Wi-Fi: You may soon access the internet via ordinary light bulbs

Light-speed internet may be upon us. A technology called “Li-Fi” uses light waves from ordinary LED light bulbs to deliver internet connectivity that that is cheaper, more secure and 100 times faster that broadband internet.<p>Velmini—a tech company in Tallinn, Estonia—is the first to test visible …

Wi-Fi

"Estamos muito perto de fazer paraplégicos voltarem a andar"

Segundo o neurocientista Miguel Nicolelis, a parte científica está pronta. Agora é tudo uma questão de engenharia.<p>"Foi um ano muito louco", disse Miguel Nicolelis, entre duas longas arfadas, à beira de uma mesa na sede do Projeto Andar de Novo, no bairro da Vila Madalena, em São Paulo, numa tarde …

The hidden ways traffic flows

Going from A to B? Whichever way you choose to travel, Chris Baraniuk discovers the hidden technologies which decide when and how you’ll get there<p>Get in your car and drive. If there's one thing that cinema and Bruce Springsteen songs have taught us, it's that there's nothing freer than the open …

Autonomous Cars

Por que o Waze faz tanto sucesso?

<b>O biólogo Carlos Garcia, de 34 anos, vive em Brasília e diz ser ansioso por natureza. Mas ele encontrou no aplicativo para celular Waze, que indica as melhores rotas de trânsito, uma forma de aplacar este sentimento.</b><p>"Quando um amigo me contou do Waze, fiquei impressionado. Ele me conquistou quando …

Why shaking hands is still a big deal

Researchers find the gesture creates better cooperation and trust between humans - even when it is carried out by a robot<p>Shaking hands before negotiations results in a better deal for both parties - even when one is represented by a robot, a study has found.<p>The act of shaking hands at the start of …

Robotics

Will the Queen 'take control' if election creates a stalemate?

The Times and the Mirror are citing royal sources suggesting that the Queen could end up running the nation if there is no clear winner in the UK election. But does she have the power to fire or hire a prime minister?<p><b>What do the reports say?</b><p>The monarch is due to give the Queen’s speech on 27 May, …

United Kingdom

Hyper-accurate atomic clock won't lose a second in 15 billion years

Scientists have created an atomic clock so precise that it won't lose or gain a single second in 15 billion years -- roughly the age of our universe.<p>But the clock isn't just steady, it's also amazingly accurate. So accurate in fact, that it can detect tiny changes in the speed of its ticks …

Physics

“A câmera fotográfica é para mim um caderno de esboços. Um instrumento da intuição e da espontaneidade, o soberano do instante que, em termos visuais, ao mesmo tempo questiona e decide. Para ‘significar’ o mundo temos que nos sentir implicados no que recortamos através do visor. Essa atitude exige concentração, sensibilidade, senso de geometria. É por uma economia de meios e, sobretudo, um esquecimento de si mesmo, que chegamos à simplicidade da expressão.” Henri Cartier-Bresson [+] http://goo.gl/Obww5W

Bending waves