Saturday, 29 June 2013

Science- News And Experiments

 In This Blog Of Mine, You Will Know About The Latest Discoveries And All The  Basic Knowledge You Should Have  About These Experiments ,So That U Can Make Yourself Updated About Whats Going On In  This Scientific World. ........Believe Me Its Going Too Be Very Interesting And Learning Will Be Quite A Fun.....

  • DARPA Robotics Challenge

 world's most advanced humanoid robots with drill in his hand.

The DARPA Robotics Challenge (DRC), the most ambitious robot competition in history, cleared a key milestone yesterday. The Pentagon’s research wing announced the results of the Virtual Robotics Challenge, a five-day-long qualification event during which 26 teams from around the world directed a humanoid robot to complete astonishingly difficult tasks, with little to no human intervention, including picking up, attaching, and turning on a fire hose.

Pictured here, one of the world's most advanced humanoid robots.

 Seven teams advanced, earning funding and the use of a government-provided robot, the 5-foot-10, 240-pound Boston Dynamics-built Atlas, in the next phase of the DRC.

 The new challenge will take place during the next two years, with the first phase kicking off in October. The goal is to develop robots that can work in dangerous environments engineered for humans, not robots. They could potentially protect humans from harm by making repairs or scouting terrain. DARPA specifically mentions the nuclear disaster at Japan’s Fukushima Daiichi power plant as an example of why this type of robot would be useful.

The challenge is not focused strictly on humanoid robots, but some of the tasks — like driving a car and climbing a ladder — could be difficult for non-humanoid body plans to accomplish.

  • Voyager 1 entered a strange part of  space

Voyager are farthest human made objects in universe.
Voyager 1 entered a strange and unexpected part of space within the solar system last August, scientists announced.A few different effects mark the area, which astronomers have dubbed the "heliosheath depletion region" or a "magnetic highway." The number of charged particles from the Sun there is very low. 
In the Magnetic Highway An illustration of the Voyager 1 in the "magnetic highway" region it reached last August
Measurements of cosmic rays from other, non-Sun sources, are high. Together, the measurements suggest a new boundary region between the heliosphere—the bubble around the Sun, in which the Sun exerts its influence—and interstellar space. Astronomers had not previously guessed such a region existed.

Everyone is excited for the Voyagers, which are the farthest human-made objects in space, to leave the heliosphere and enter interstellar space. That hasn't happened yet. Still, astronomers have picked up two of the three signs they expected to see when Voyager 1 exists the heliosphere, NASA reported. Scientists aren't sure exactly how large the heliosphere is, so they don't know when Voyager 1 will exit. It may be months or years.

An illustration of regions at the edge of the heliosphere through which Voyager 1 has journeyed. The heliopause is the border between the heliosphere and intersteller space. .
The Voyager 1 and 2 spacecraft blasted off from Earth in 1977. They bore, among their instruments, golden records with images and sounds including silhouettes of a man and a woman, images of human architecture, greetings in 55 languages, 90 minutes of music and other images and audio from Earth. Voyager 1 is now more than 11 billion miles away from home, while the Voyager 2 is about 9 billion miles away from Earth. 

The Most Expensive Experiment Ever

Many machines over the past 60 years have been billed as the one that will make the big breakthrough in fusion science, only to stumble. This one could be different.
Inside ITER 

Some people have spent their whole working lives researching fusion and then retired feeling bitter at what they see as a wasted career.

 But that hasn’t stopped new recruits joining the effort every year: optimistic young graduates keen to get to grips with a complicated scientific problem that has real implications for the world. Their numbers have been increasing in recent years, perhaps motivated by two factors: there is a new machine under construction, a huge global effort that may finally show that fusion can be a net producer of energy; 
The new machine is the International Thermonuclear Experimental Reactor, or simply ITER (pronounced ‘eater’).

 Many machines over the past 60 years have been billed as ‘the one’ that will make the big breakthrough, only to stumble before getting there. But considering how close JET, its direct predecessor, got to break-even, ITER has to have a good chance.

Super-Hydrophobic Spray Makes All Your Stuff Liquid-Proof

It's definitely weird to watch the NeverWet chemists pump chocolate syrup onto a pair of white canvas shoes and to see the syrup roll off in ribbons. Or how about when the researchers dunk an iPhone into a beaker of water and then pull out the phone and use it?
Chocolate Syrup on Never Wet-Coated Shoes

NeverWet is a set of two ultra-hydrophobic sprays, including a base coat and top coat, that you can use to treat paper, fabric, metal and other materials. When local news site Lancaster Online first posted a video about NeverWet—invented by chemists based near Lancaster, Pennsylvania—the video garnered almost 1.4 million views. Now, two years later, it'll finally be available commercially

Liquid Drops on a NeverWet Surface
NeverWet scientists first stumbled upon the stuff while trying to make a coating to protect steel from corrosion. They ended up with a spray that forms a very high angle of contact for any water that touches it.
. A material with a contact angle of zero will make a drop of water lie flat. Human skin has a contact angle of 75 to 90 degrees. Car wax has a contact angle of 95 degrees. NeverWet creates a contact angle of 165 degrees. If the contact angle were 180 degrees, any water touching it would form a perfect sphere.

NASA is funding a 3D food printer, and it'll start with pizza

There’s nothing like months aboard the International Space Station to get an astronaut to hate space station food – one can only have so many servings of freeze-dried ice cream. In an attempt to not only expand the menu for Earth orbiters

  • NASA is funding research into 3D-printed food. As Quartz reveals, Mechanical engineer Anjan Contractor received a $125,000 grant from the agency to build a prototype 3D printer with the aim of automating food creation. 
  • It's hoped the system could provide astronauts food during long  distance space travel, but its creator has the loftier aim of solving the increasing food shortages around the world by cutting down on waste. 
The software for the printer will be open-source, while the hardware is based on the open-source Rep Rap Mendel 3D printer

performing experiment
  • The concept is to use basic "building blocks" of food in replaceable powder cartridges
  •  By combining each block, a wide range of foods should be able to be created by the printer. 
  • The cartridges will have a lifespan of 30 years, more than long enough to enable long-distance space travel.
  •  After proving his system works on a basic level by printing chocolate, Contractor will start his project within the next few weeks by attempting to print a pizza.

The pizza printer won’t be a simple, automated layering of sauce and anchovies. It will be a true 3D printer, fabricating the different toppings from their component ingredients. This is important in space where the shelf life of food needs to be really, really long. A “digital recipe” will be used to combine powders, containing proteins and carbohydrates, and oils to create foodstuffs that have similar structure, taste, smell and nutrition as the real thing.


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