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<p>Lithospheric magnetic field</p>

<p>Courtesy: ESA</p>
Earth’s Magnetic Field Reveals Details Of A Dramatic Past
ESA’s Swarm satellites are seeing fine details in one of the most difficult layers of Earth’s magnetic field to unpick – as well as our planet’s magnetic history imprinted on Earth’s crust.
<p>Evolution of a spin and its uncertainty as they orbit due to a magnetic field</p>

<p>Courtesy of: ICFO</p>
Scientists Evade The Heisenberg Uncertainty Principle
The study, published in Nature, reports a technique to bypass the Heisenberg uncertainty principle.

<p>Image courtesy of NCSU</p>
Using Light to Control Curvature of Plastics
Researchers have developed a technique that uses light to get two-dimensional (2-D) plastic sheets to curve into three-dimensional (3-D) structures, such as spheres, tubes or bowls.
<p>This spectacular image from the VLT Survey Telescope shows the Cat’s Paw Nebula (NGC 6334, upper right) and the Lobster Nebula (NGC 6357, lower left). These dramatic objects are regions of active star formation where the hot young stars are causing the surrounding hydrogen gas to glow red. The very rich field of view also includes dark clouds of dust. With around two billion pixels this is one of the largest images ever released by ESO. A zoomable version of this giant image is available here.</p>

<p>Note that the circular features in the image around bright stars are not real, they are due to reflections within the optics of the telescope and camera.</p>


The Cat’s Paw and Lobster Nebulae
The beautiful, glowing, cosmic clouds of gas and dust catalogued as NGC 6334 and NGC 6357 now have new names.

First Look at Magnetism of Real Nanoparticle
Scientist help solve a unique problem: to model magnetism at the atomic level using experimental data from a real nanoparticle.
Dark Matter May be Smoother than Expected
Analysis of a giant new galaxy survey suggests that dark matter may be less dense and more smoothly distributed throughout space than previously thought.
Holograms from Neutrons Created
For the first time, scientists have used neutron beams to create holograms of large solid objects, revealing details about their interiors in ways that ordinary laser light-based visual holograms cannot.

Science Facts

Delivered by TIR

by Anton Skorucak and

Fiberoptic cable: The content of this article has been delivered to you via internet fiber-optic links. Today most phone conversations, fax transmissions and almost all internet and email traffic travel at the speed of light between cities and continents via fiber-optics. An optical fiber (or fiber-optics cable) is to light what a copper wire is to electricity, a guiding medium. In an electrical wire, electrons rush from one end of the wire to the other; driven by the electric field. In optical fiber, photons of light travel from one end to the other purely because they have no choice; they are confined to the cable and can not escape! The phenomenon that is responsible for the confinement of the light signal within the core of the fiber-optic cable is called the Total Internal Reflection or TIR.

If you have ever been under water in a swimming pool with your head close to the surface, you have probably noticed that the water-air interface becomes a mirror and you cannot see outside. That is an example of TIR. Basically, whenever you have an interface of two materials (mediums) of different indexes of refraction or optical density, a light beam will fully reflect at this interface if it is trying to escape the denser material at an angle that is larger than a certain critical value.

All optical fibers are basically cylindrical wires made of glass. They have a core (the optically denser medium) and a so-called cladding, which is optically less dense. The cladding fully surrounds the core, like a cylindrical jacket. The light signal is inserted into the core and it travels down the core with occasional TIR reflections from the core-cladding interface. It is almost as if you have a tiny cylindrical mirror from which the light reflects. These total internal reflections are so efficient that the light signal does not lose much of its strength at each reflection as it would when reflecting from an ordinary silver mirror. Thanks to TIR, signals can travel as far as 250 miles (400 km) without needing amplification.

X-rays can be produced by a high-speed collision between an electron and a proton.
X-Rays - Another Form of Light

A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through ...
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Images from the EIT (Extreme-ultraviolet Imaging Telescope) instrument on the SOHO spacecraft.
Ultraviolet Light

Ultraviolet light is a form of radiation which is not visible to the human eye. It's in an invisible part of the 'electromagnetic spectrum'. Radiated energy, or radiation, is given off by many objects ...
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Catch A Shooting Star

A meteor, sometimes called a 'shooting star,' can be the brightest object in the night sky, yet meteoroids are the smallest bodies in the solar system that can be observed by eye. Wandering through sp ...
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