Group items tagged

more indications that it was an asteroid ...

more indications that it was an asteroid ...

from Kevin

the standard question: can we use it for space?

interesting, the paper: http://graphics.stanford.edu/papers/fourierphoto/fourierphoto-600dpi.pdf

sante have a look .... Anyons ... !!

you can't hide things before historians forever ...

"And according to his calculations, improvements in short-pulse laser systems could make this form of thruster more than 40 times as efficient as even the best of today's ionic propulsion systems that push spacecraft around. "

Dejan please have a look at this also ...

while the nuclear reaction seems to be sound at first view, I am not so sure how this would work: "Electromagnetic forces push the target and the alpha particles in the opposite directions, and the particles exit the spacecraft through a nozzle, providing the vehicle's thrust. "

More funding for helicon double layer. I am wondering how much EADS is contributing to it? Must be Lainé. 

Altering local weather?

this is the infrastructure that satellites have to compete with ....

I guess you are right... Is ACT already planning a find-and-cut expedition?

now that we have the boat and thanks to Camilla it is still floating after the deluge ....

looks like very nice research - can we implement a technique inspired by this on a landing spacecraft?

a group of scientists in the US has formulated a set of basic rules that could help understanding how particles interact at the nanoscale

The most trivial application is to triple the bandwidth capability of an antenna.... working on some more exotic stuff...

Researchers have created a new material that can produce three or more free electrons every time it absorbs a single photon. This is unlike conventional semiconductors, which produce just one free electron per photon. Based on tiny semiconductor structures called quantum dots, the new material - developed by researchers at Delft University of Technology in the Netherlands and Toyota Europe in Belgium - could someday be used to make more efficient solar cells.

For more than a century scientists have relied on the "ergodic theorem" to explain diffusive processes such as the movement of molecules in a liquid. However, they had not been able to confirm experimentally a central tenet of the theorem - that the average of repeated measurements of the random motion of an individual molecule is the same as the random motion of the entire ensemble of those molecules. Now, however, researchers in Germany have measured both parameters in the same system - making them the first to confirm experimentally that the ergodic theorem applies to diffusion.

nice ...Sante?

"The BICEP2 data would eliminate about 90% of inflationary models, Andrei Linde, a cosmologist at Stanford University in California, told a packed auditorium at MIT the day after the BICEP2 announcement (see picture below). Many of those models do not produce gravitational waves at detectable levels, said Linde, who is one of the founders of inflation theory." Is there any hope for LISA now?

Of course - the data is more proof that GWs exist!!

so you don't expect any impact on the science objectives of Lisa at all?

Anna, Sante, some Christmas reading! Real theoretical physicists never sleep ;)

Just getting a particle up to near the speed of light isn't good enough for today's physics. To properly unravel the fundamentals of the universe, particles have to be smashed together with enormous force. And two Stanford researchers have just devised a laser-based method that imparts ten times the power of traditional methods at a fraction of the cost.