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March 10 2010 13:14:53

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Superconductivity

Nitrogen and superc...
Superconductivity a...
Superconductivity T...
High-Tc Tops 240K
Hgh-Tc Jumps to 233K
Coaxing YBCO Above ...
218K Superconductiv...

Events

BBC news

Collider to shut for year to fix faults
The Large Hadron Collider must be shut down for a year starting in late 2011 to address design flaws, the BBC has learned.

Ring may be giant 'impact crater'
Deforestation has revealed what could be a giant impact crater in Central Africa, according to Italian scientists.

Ancient eggshell yields its DNA
The eggshells of long-dead and extinct species are a particularly good source to find preserved DNA, researchers say.

Nanotech 'fuse' for novel battery
A never-before-seen reaction in nanotubes could make for batteries that pack a mighty punch, say researchers.

Third of EU emissions 'imported'
Research shows some EU countries "import" about a third of their carbon emissions from developing countries.

Superweed predator to be released
A plant-eating predator that preys on aggressive superweed Japanese knotweed is to be given a trial release in England.

Skynet satellite system extended
Skynet 5, the UK's single biggest space project, is to get a fourth satellite to up the bandwidth available to British forces.

Lords in science investment call
Former Labour and Conservative science ministers challenge the next UK government to maintain investment in science.

Tory review urges science boost
A Tory-backed report urges incentives for schools and tax breaks for researchers to raise the profile of science.

Tongue-lashing: Chameleon's weapon unmatched in the cold
Chameleon have a hidden advantage as hunters, a ballistic tongue that works well in the cold.

Amateur Telescope Making

Re: 12" f10 12mm thick
Sincere thanks to everyone for your words. My friend was unaware of mask and null testing. So I described it to him. He will measure focal length of each zone

Re: I need a source of crushed, granular or powdered borosilicate (P
... don't be telling that to the fellows over in the ATM list who are doing just that... i've had one in Australia offer to cast me a pyrex blank and at least

Re: I need a source of crushed, granular or powdered borosilicate (P
Hi Al! Thanks for the prompt response. I was not aware that borosilicates can not be remelted. I'll have to look into that. I've molds that I am working with

Re: Scope size and fuzzies
Hi Christo, AFAIK, all the Messier objects were discovered using telescopes of inferior light gathering power to yours including speculum metal reflectors and

Re: I need a source of crushed, granular or powdered borosilicate (P
Hi Art, Do you mean crushed Pyrex or the starting ingredients? AFAIK, the common experience is that Pyrex or Borosilicate glass cannot be remelted. What are

Re: Scope size and fuzzies
South Africa! I am jealous. A friend goes there periodically and loves the skies. Phill On Mar 9, 2010, Christo van der Merwe

Re: Scope size and fuzzies
Yup. And your 6" will be a great finder for your 40" Phill On Mar 9, 2010, Christo van der Merwe wrote: Thanks Phill It's a

I need a source of crushed, granular or powdered borosilicate (Pyrex
I will be conducting tests with high temperature kilns soon and wish to experiment some with melting and moulding Pyrex or other brand of borosilicate glass.

Re: Scope size and fuzzies
Thanks for the encouragement guys. I just saw my first galaxy, M83 !!! (faint but it's there). Christo (I'm in South Africa) ... From: Vladimir Galogaza To:

Re: 12" f10 12mm thick
Joe, if you apply the same stroke during many rotations of the mirror it won´t show any astigmatism. About the curve figuring, Carl zambuto procedure is a

Superconductivity

Nitrogen and superconductors
For many years I was involved as a chemist in the analysis of superalloys. On one project, the materials scientists were infusing iron-aluminum based alloys

Superconductivity at room temperature!!!
The structure of the key compound to prepare organic ceramics with superconductivity at room temperature is given. Manufacturing is also described. Under

Superconductivity Tops 250K
Superconductor World Record Surpasses 250K ... 10 October 2009 Superconductors.ORG ... Superconductors.ORG herein reports the observation of record high

High-Tc Tops 240K
Superconductor World Record Tops 240K ... 18 May 2009 Superconductors.ORG ... Superconductors.ORG herein reports efforts to increase the Tc of the 233K

Hgh-Tc Jumps to 233K
Superconductor World Record Jumps to 233K ... 24 March 2009 Superconductors.ORG ... 40 degrees below zero is cold by any measure. But, in the world of

Coaxing YBCO Above 175K
Coaxing YBCO Above 175K "Hyper YBCO" HY-134 ... 3 March 2009 Superconductors.ORG ... Since its discovery in 1987 YBCO has established itself as the preeminent

218K Superconductivity Resolved
... 29 January 2009 Superconductors.ORG ... Signs of superconductivity near 218 Kelvin, reported by Superconductors.ORG as a minority phase on November 30,

212K Superconductor
200K Superconductor Tweaked to 212K ... 30 November 2008 Superconductors.ORG ... In 1997 theoretical physicists with the Lawrence Berkeley Laboratory at the

The First 200K Superconductor
The First 200K Superconductor and a New Superconductor System ... 15 October 2008 Superconductors.ORG ... Superconductors.ORG herein reports synthesis of the

195K Superconductivity
Superconductivity at Dry Ice Temperatures -195K Achieved with New Synthesis Method- ... 17 July 2008 Superconductors.ORG ... Superconductors.ORG herein reports