explicadinho: 03/09/17

09 março 2017

Água de cidade canadense fica com a cor rosa

By: vivian on quinta-feira, março 09, 2017

Residentes de Onoway, Alberta, ficaram alarmados ao descobrir que a água da torneira estava com a cor rosa.

O problema peculiar começou na noite da última segunda-feira quando o abastecimento de água para cerca de 1.000 casas na cidade canadense de Onoway ganhou uma cor fúcsia brilhante.

A questão foi posteriormente controlada por meio de válvula em uma estação de tratamento de água que havia liberado permanganato de potássio em quantidades excessivas no abastecimento de água da cidade.

“Embora seja estranho ver água cor de rosa nas torneiras, o permanganato de potássio é usado em processos normais de tratamento para ajudar a remover ferro e manganês”, disse o prefeito Dale Krasnow que estava ansioso para tranquilizar residentes de que a água era segura para beber.

Imagens e vídeos da água rosa foram compartilhadas nas redes sociais:

Cristais de tempo confirmados como novo estado da matéria

By: vivian on quinta-feira, março 09, 2017

Pela primeira vez, os cientistas conseguiram criar cristais de tempo em um laboratório.

Proposto inicialmente pelo físico Frank Wilczek em 2012, um cristal de tempo é essencialmente um estado de matéria com uma estrutura atômica que se repete não só no espaço, mas também no tempo – permitindo que ele mantenha “tique-taque” indefinidamente sem se aquecer ou criar entropia.

“Nós tomamos essas idéias teóricas ao longo dos últimos dois anos e construímos no laboratório”, disse Andrew Potter da Universidade do Texas, em Austin.

“Esperamos que este seja apenas o primeiro exemplo destes, com muitos mais vindo por vir”.

Um vídeo explicando o conceito de cristais de tempo pode ser visto abaixo.

According to the traditional beliefs of the Native American...

By: vivian on quinta-feira, março 09, 2017

According to the traditional beliefs of the Native American Innu people, spirits speak to the living. Each have their own way of communicating. Some talk through drums. Others talk through dreams. And one of them, Matshishkapeu, speaks through farts.

Matshishkapeu, the Innu said, spoke to them “with great frequency”—especially when men were alone without women. Every fart, they believed, was Matshishkapeu giving them a message. Any farts would require immediate translation by an elder. They would interpret what the fart sounded like and tell the person what Matshishkapeu’s message was. That was not always easy! “Matshishkapeu’s utterances are usually cryptic,” one Innu hunter said. “You have to concentrate hard in order to understand what is being said.”

March 9th 1945: Bombing of Tokyo beginsOn this day in 1945, the...

By: vivian on quinta-feira, março 09, 2017

March 9th 1945: Bombing of Tokyo begins

On this day in 1945, the bombing of Tokyo by the United States Air Forces began. There had been raids by B-29 bombers since November 1944, but this was one of the most destructive in history. The raid on the night of March 9th saw 334 B-29s take off in Operation Meetinghouse, with 279 of them dropping around 1,700 tons of bombs. 16 square miles of the Japanese capital were destroyed, around a million were left homeless and around 100,000 people died as a result of the firestorm. Tokyo saw many raids such as this, with over 50% of Tokyo being destroyed by the end of the Second World War. However the firebombing on the night of March 9/10th was the single deadliest air raid of the war; the immediate deaths were higher than seen at Dresden, Hiroshima or Nagasaki as single events.

“Killing Japanese didn’t bother me very much at that time… I suppose if I had lost the war, I would have been tried as a war criminal…. Every soldier thinks something of the moral aspects of what he is doing. But all war is immoral and if you let that bother you, you’re not a good soldier.“
- Curtis LeMay, the American general behind the firebombing campaign

Jemaa el Fna, the vast market square in Marrakech, Morocco,...

By: vivian on quinta-feira, março 09, 2017

Jemaa el Fna, the vast market square in Marrakech, Morocco, literally means “assembly of the dead.” It may recall when the market square was where public executions were held, as early as 1050 CE. Or the name may refer to the heads of various executed criminals, which were displayed in the market square. Thankfully this practice stopped in the 1800s. But the name lives on.

explicadinho

09 março 2017

Água de cidade canadense fica com a cor rosa

Cristais de tempo confirmados como novo estado da matéria

According to the traditional beliefs of the Native American...

March 9th 1945: Bombing of Tokyo beginsOn this day in 1945, the...

March 9th 1945: Bombing of Tokyo begins

Jemaa el Fna, the vast market square in Marrakech, Morocco,...

Why People Will Go To Space

The National Autonomous University of Mexico, based in Mexico...

NASA's Orion Spacecraft Parachutes Tested at U.S. Army Yuma Proving Ground

NASA's Orion Spacecraft Parachute Test at U.S. Army Yuma Proving Ground

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