300T Magnetic field created

[3ddraft]

Check this out!

http://newscenter.lbl.gov/news-releases/2010/07/29/graphene-under-strain/

 

[fazers_on_stun]

Interesting, but if you read the article, it says "pseudo-magnetic field", not an actual magnetic field. IIRC the strongest permanent magnets in existence are the recent rare-earth magnets and they generate a field of <2 Teslas. Even superconducting magnets are limited by the self-quenching effect to somewhere below 30T. The strongest actual magnet made to date is a hybrid magnet at 45T. It is possible to create much stronger magnetic fields but these are extremely short-duration, typically micro or nanoseconds, and involve discharging or converting enormous amounts of stored energy into electrical energy. For example, the University of Texas experimented with generating magnetic containment fields, as for use in a Tokamak fusion containment vessel, which involved spinning up a gigantic copper flywheel and then magnetically braking it to a complete stop in a few arc-minutes of rotation, generating tens of millions of amperes of current for a few microseconds.

The strongest magnetic fields known to date are those of the rapidly-rotating neutron stars known as magnetars. From Wikipedia:

Magnetars are primarily characterized by their extremely powerful magnetic field, which can often reach the order of ten gigateslas. These magnetic fields are hundreds of thousands of times stronger than any man-made magnet, and quadrillions of times more powerful than the field surrounding Earth. As of 2010, they are the most magnetic objects ever detected in the universe.

A magnetic field of 10 gigateslas is enormous relative to magnetic fields typically encountered on Earth. Earth has a geomagnetic field of 30–60 microteslas, and a neodymium based rare earth magnet has a field of about 1 tesla, with a magnetic energy density of 4.0×105 J/m3. A 10 gigatesla field, by contrast, has an energy density of 4.0×1025 J/m3, with an E/c2 mass density >104 times that of lead. The magnetic field of a magnetar would be lethal even at a distance of 1000 km, tearing tissues due to the diamagnetism of water. At a distance halfway to the moon, a magnetar could strip information from all credit cards on Earth.

As described in the February 2003 Scientific American cover story, remarkable things happen within a magnetic field of magnetar strength. "X-ray photons readily split in two or merge together. The vacuum itself is polarized, becoming strongly birefringent, like a calcite crystal. Atoms are deformed into long cylinders thinner than the quantum-relativistic wavelength of an electron." In a field of about 105 teslas atomic orbitals deform into rod shapes. At 1010 teslas, a hydrogen atom becomes a spindle 200 times narrower than its normal diameter.

Not only would a 10GT field tear your water molecules apart, it would rip the iron out of your haemoglobin (what carries the oxygen in your red blood cells) and probably disable all neural activity as well. So you would die instantaneously but painlessly since the nerves would never be able to send the sensation of your body being ripped apart molecule by molecule, to your brain.

Cheerio!

 

[Reynod]

This topic has been closed by Reynod