Tuesday, July 28, 2009

Transparent Aluminum

"The history of science demonstrates, however, that the scientific truths of yesterday are often viewed as misconceptions, and, conversely, that ideas rejected in the past may now be considered true. History is littered with the discarded beliefs of yesteryear, and the present is populated by epistemic corrections. This realization leads us to the central problem of the history and philosophy of science: How are we to evaluate contemporary sciences's claims to truth given the perishability of past scientific knowledge? ... If the truths of today are the falsehoods of tomorrow, what does this say about the nature of scientific truth?" -- Naomi Oreskes, historian, 1999

How quickly science fact becomes science fiction and science fiction becomes science fact.

Science Daily: Transparent Aluminum Is ‘New State Of Matter’.

ScienceDaily (July 27, 2009) — Oxford scientists have created a transparent form of aluminium by bombarding the metal with the world’s most powerful soft X-ray laser. ‘Transparent aluminium’ previously only existed in science fiction, featuring in the movie Star Trek IV, but the real material is an exotic new state of matter with implications for planetary science and nuclear fusion.

In the journal Nature Physics an international team, led by Oxford University scientists, report that a short pulse from the FLASH laser ‘knocked out’ a core electron from every aluminium atom in a sample without disrupting the metal’s crystalline structure. This turned the aluminium nearly invisible to extreme ultraviolet radiation.

''What we have created is a completely new state of matter nobody has seen before,’ said Professor Justin Wark of Oxford University’s Department of Physics, one of the authors of the paper. ‘Transparent aluminium is just the start. The physical properties of the matter we are creating are relevant to the conditions inside large planets, and we also hope that by studying it we can gain a greater understanding of what is going on during the creation of 'miniature stars' created by high-power laser implosions, which may one day allow the power of nuclear fusion to be harnessed here on Earth.’

The discovery was made possible with the development of a new source of radiation that is ten billion times brighter than any synchrotron in the world (such as the UK’s Diamond Light Source). The FLASH laser, based in Hamburg, Germany, produces extremely brief pulses of soft X-ray light, each of which is more powerful than the output of a power plant that provides electricity to a whole city.


Quantum_Flux said...

So, I'm going to be able to replicate this with scotch tape and aluminum foil, right?

Quantum_Flux said...

....rrrriiiiipppp.....zzzzaaaapppp..... (((Hover)))

Quantum_Flux said...

How many farads of capacitance is required to make this powerful X-ray laser?

Quantum_Flux said...

Sam Barros - Powerlabs

DanielW said...

So the next step is to kidnap some whales isn't it?

I think this is really, really cool.