This new material is not black, it’s super black… and you can’t see it

Using nanotubes, researchers have created Vantablack, a new material that is so, so dark that your eyes can’t sense it. 

Black just became way cooler.

British company Surrey NanoSystems has developed a super black coating that absorbs 99.96% percent of visual light, setting a new world record.

Made out of carbon nanotubes, the new material, dubbed Vantablack, is so, so dark that the human eye can’t discern its shape and dimension.

The nanotubes are 10,000 thinner than human hair and are so tightly packed together that light particles can’t get through them. This means most of the light is absorbed, creating an effect that its inventors describe almost like a black hole.

The inventors have grown this nanotube material in sheets of aluminium foil, which they have manipulated to create different shapes, but everything that’s covered by Vantablack appears smooth because of its light absorbing properties. "You expect to see the hills and all you can see … it's like black, like a hole, like there's nothing there. It just looks so strange," said Ben Jensen, the firm's chief technical officer, to The Independent's Ian Johnston.

Vantablack can be used to calibrate astronomical cameras, telescopes and infrared scanning systems to get better readings. "It reduces stray-light, improving the ability of sensitive telescopes to see the faintest stars, and allows the use of smaller, lighter sources in space-borne black body calibration systems. Its ultra-low reflectance improves the sensitivity of terrestrial, space and air-borne instrumentation”, said Jensen in a release.

"Many people think black is the absence of light. I totally disagree with that. Unless you are looking at a black hole, nobody has actually seen something which has no light," professor of colour science and technology Stephen Westland from Leeds University in the UK told The Independent. "These new materials, they are pretty much as black as we can get, almost as close to a black hole as we could imagine." 

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Step 1: Navigate to -> Start -> Control Panel -> Regional and Language Option -> Click on Customize.

  Step 2: Now Click on  TIME Tab -> Change AM symbol and PM symbol from AM and PM to your name, then click on Apply -> Ok.  You will your name now instead of AM or PM after the time in Taskbar. wasn't it so simple.

World's first solar-powered farmbot unveiled in Australia

A new solar-powered robot has been designed for farms to collect data on pests and plant disease, pick weeds, and someday even harvest crops.

Named the Ladybird, this new robot is laser-guided and self-driving. It uses sensors and hyper-spectral cameras to collect data about pests and crop conditions as it moves around, which it automatically interprets and delivers to the farmer.

It has just completed a successful three-day test on an Australian farm that grows spinach, onions and beetroot. 

"Ladybird focusses on broad acre agriculture and is solar-electric powered. It has an array of sensors for detecting vegetable growth and pest species, either plant or animal,” said chief designer Salah Sukkarieh, professor of robotics and intelligent systems at the University of Sydney, in a statement. "She also has a robotic arm for the purposes of removing weeds as well as the potential for autonomous harvesting.” 

If there is a concern that the robot will replace jobs, Sukkarieh says that it will increase a farm’s efficiency and yield, freeing staff up from manual work to spend more time figuring out how to adjust and improve their methods using the information it collects. If the Ladybird picks up on the early stages of a crop disease or infestation, the staff will have the time to address these threats much quicker than if they were left to identify on the signs on their own.

According to Brian Merchant at Motherboard, the industry has welcomed the technology:

"Sukkarieh was awarded the 'Researcher of the Year' accolade by the Australian Vegetable Industry, which is apparently more excited at the prospect of getting some automated help than it is afraid the bot will take its jobs. In the dystopian-looking days ahead, when climate change has raised temperatures and brought less rainfall to arid-leaning regions, farmers will need all the help they can get to squeeze as much produce as possible out of increasingly less productive land."

Ed Fagan, the owner of the farm where Ladybird carried out its trial run, told the ABC, "A lot of the time in horticulture, if you're short of an element in the plant, by the time you see a symptom it's too late. [The Ladybird] will be able to pick up a nutrient deficiency before we see any symptoms. Secondly, you can use it at night at 2 o'clock in the morning and go out and do an insect survey, so things like cutworm popping out at night time, slugs, worms, things like that.”

It sounds pretty promising, but as Merchant at Motherboard points out, the technology will need to be affordable for a farm to buy and maintain, and it must be durable enough to justify. And just how much more efficient it can make a farm must offset the cost of the Ladybird to make the investment worthwhile.
source: science alert

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