Science news

A new microscope invented by scientists at Howard Hughes Medical Institute’s Janelia Farm Research Campus will let researchers use an exquisitely thin sheet of light -- similar to that used in supermarket bar-code scanners -- to peer inside single living cells, revealing the three-dimensional shapes of cellular landmarks in unprecedented detail. The microscopy technique images at high speed, so researchers can create dazzling movies that make biological processes, such as cell division, come alive.

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Luc Montagnier, who shared the Nobel prize for medicine in 2008 for his part in establishing that HIV causes AIDS, says he has evidence that DNA can send spooky electromagnetic imprints of itself into distant cells and fluids. If that wasn’t heretical enough, he also suggests that enzymes can mistake the ghostly imprints for real DNA, and faithfully copy them to produce the real thing. In effect this would amount to a kind of quantum teleportation of the DNA.

Two adjacent but physically separate test tubes were placed within a copper coil and subjected to a very weak extremely low frequency electromagnetic field of 7 hertz. The apparatus was isolated from Earth’s natural magnetic field to stop it interfering with the experiment. One tube contained a fragment of DNA around 100 bases long; the second tube contained pure water.

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Million-frames-per-second camera does sub-cellular bioimaging

 

A European consortium has developed the Megaframe Imager, an ultrafast camera capable of recording images at one million frames per second.

It allows for cellular and sub-cellular imaging, neural imaging, biosensing, DNA and protein microarray scanning, automotive collision studies, and high-sensitivity astronomical observations.

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MEGAFRAME sensor

   


UDFy-38135539 Is Most Distant Galaxy Ever Measured

Astronomers report they have measured the distance to the most remote galaxy and have found that they are seeing it when the Universe was only about 600 million years old (a redshift of 8.6), making those the first confirmed observations of a galaxy whose light is clearing the opaque hydrogen fog that filled the cosmos at this early time. 

“Using the ESO Very Large Telescope we have confirmed that a galaxy spotted earlier using Hubble is the most remote object identified so far in the Universe” , says Matt Lehnert (Observatoire de Paris) who is lead author of the paper reporting the results. “The power of the VLT and its SINFONI spectrograph allows us to actually measure the distance to this very faint galaxy and we find that we are seeing it when the Universe was less than 600 million years old.”

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An always-on graphene-based spin computer

October 19, 2010 by Editor
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Atomically thin insulating barriers greatly improve spin injection into graphene. Top image shows flow of electrons (dotted line) when no insulator is used. Flow of electron spin polarization is greatly improved (bottom image) when a magnesium oxide insulator is used as shown. (Kawakami lab, UC Riverside)

Physicists at the University of California, Riverside have taken an important step forward in developing a low-power, always-on “spin computer” by successfully achieving “tunneling spin injection” into graphene.

An electron can be polarized to have a directional orientation, called “spin.” This spin comes in two forms – electrons are said to be either “spin up” or “spin down” – and allows for more data storage than is possible with current electronics.

Spin computers, when developed, would use the electron’s spin state to store and process vast amounts of information while using less energy, generating less heat and performing much faster than conventional computers in use today.

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