【“隐身潜水服”问世 海洋生物也监测不到人体电信号】新西兰科技公司HECS Aquatic日前发明了一种“隐身潜水服”。 这款潜水衣由导电碳纤维制成,能够阻挡人体肌肉活动散发的95%的电信号。穿上之后,人体磁场会降到最低,即使海洋生物在身边也不会发觉。因此它可以帮助人们可以近距离的观察、接触海洋生物。

  • Marine animals use electroreception to detect humans by their muscle movement, warning them to stay away?
  • HECS Aquatics has built a Faraday cage into a wetsuit, blocking electrical signals from being sent out?
  • Technology blocks 95 per cent of the electrical signals given off by muscle movement, the company says
  • Available starting from $399 in Europe, Australia and New Zealand and $449 in the US, Canada and Mexico

When swimming in the open ocean, your every movement gives off invisible signals to the fish and sea creatures around you to betray your presence.

Sharks, lobsters, crayfish, rays, eels, lampreys, ratfish, lungfish, sturgeons and some dolphins all have the ability to detect these tiny electrical impulses given off by the movement of muscles and the beat of your heart.

But a new wetsuit could allow divers to slip undetected through the water by preventing these signals from being given off, acting like a kind of underwater 'invisibility cloak'. It promises to let divers to get close to large predators like sharks that often use this 'sixth sense' to detect prey.

The wetsuit was tested by marine biologist Ricky Elliott during a research trip in Hawaii, who was featuring in a series of stunning photographs showing him up close with a variety of animals.

'I was testing a cutting edge wetsuit technology…comprised of a Faraday cage weaved into the wetsuit fabric to block the bodies electrical signal, enabling researchers, photo/videographers, spearos and divers, closer and more natural encounters with animals' Mr Elliott said.

Animals in the sea can detect muscle movement, heartbeat and brain activity through electroreception.

The beating of a heart or contracting of a muscle sends a spontaneous electrical signal.

But this new wetsuit blocks the electrical signals, meaning people can get closer to animals without scaring them away.

The 'Stealth wetsuit' was invented by HECS Aquatic, a concealment technology company based in New Zealand.

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The technology 'blocks 95 per cent of the electrical signals given off by your muscle movement,' Ricky Elliott said in a ?explaining how it works.

It works using the same principle that means you will never be struck by lightning while inside your car.

The principle is based on a Faraday cage, invented by the scientist Michael Faraday in 1836.

Faraday discovered that inside a sphere of conducting material, the electric field balances out to become zero, even in an external electrical field.

This is because external electrical field causes the electric charges within the cage's conducting material to be distributed such that they cancel the field's effect in the cage's interior.

HECS Aquatic built a conductive grid that attenuates electrical fields into their wetsuit.

'HECS is made with a conductive carbon fibre mesh designed to reduce your electrical energy field,' the company website says.

Mr Elliott is not the only one to enjoy the proximity of creatures of the deep after donning the wetsuit.

'I've noticed a marked difference in how close I can approach certain marine life underwater while wearing the HECS suit – a worthwhile advantage for any cameraman,' said Dave Abbot, a filmmaker in New Zealand.

'[The] first time diving in my HECS suit I got all three cray species in the one dive. I never thought it would be possible or this easy,' said Jordan Murley, a marine biologist.

'The crays were slow or non responsive to touch and movement when I was wearing the HECS suit.'

'During a recent trip to the Bahamas I had the opportunity to wear the HECS dive skin,' said Jason Scanlon, a diving instructor.

'During the first set of dives I started to notice that most of the wild life ignored me and would swim around and near me as if I wasn’t even there.

'I was able to get very close to the life, which allowed me to capture photos and video that others on the dive could not. As the week progressed I noticed that most of the life would treat me as if I were one of them instead of an intruder into their space, some even ran into me.'

The wetsuit is available starting from $399 (?300) in Europe, Australia and New Zealand and $449 (?338) in the US, Canada and Mexico.

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原文链接:http://www.dailymail.co.uk/sciencetech/article-3688225/Underwater-INVISIBILITY-cloak-Wetsuit-prevents-sharks-fish-detecting-tiny-electrical-signals-divers-muscles.html?ITO=1490


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