The Guardian - Cryptic crossword No 25,505 - Dec 14 2011

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Clues Answers
'Steady state' system originally anticipated by East Germans of intelligence STASIS
A South Slav doing combinatorial analysis, not limbo dancing CROATIAN
Argentinian revolutionary conceals carbon which is emitting radiation ACTIVE
Community programme involves university lecture about electrical resistance OUTREACH
Experimentally, it's nicest to team up with some top boffins SCIENTISTS
Express disapproval of unrewarding type of logic BOOLEAN
Extremely small measurement causing Greek character to go without love MICRON
Get something straight: society needs free petroleum! UNCOIL
Graduate's written about alien constellation's second star BETA
Helium alone can be this; or Coca-Cola, according to some? SUPERFLUID
In US dramatically increased despair spread about nuclear core SPIRALED
Key test about to reveal smallest particle ATOM
Light showing on the dial? BEAM
Like Knox, perhaps, pair find the Ultimate Answer FORTYTWO
Clues Answers
Long periods when engineering salary rose SOLARYEARS
Making changes to American distributed array processor, no longer hot device ADAPTING
Many large moons oddly observed in the universe COSMOS
Old South African or Danish physicist is heard BOER
One admitted a Nobel explosive leads to pulverised body parts BONEMEAL
Perhaps contacts the French about nuclear antagonists LENSES
Quiet, originally unorthodox Tesla's eccentricity varies in intensity PULSATES
Scotty, perhaps, imprisoned by Vulcan in engine room CANINE
Siemens starting to provide support for upcoming students making mistakes SLIPUPS
Study of matter, energy and gas reportedly turning science upside down PHYSICS
Third element of 'uncertainty principle' gripped German physicist PLANCK
Transport worker's course in laminar flow RAILWAYMAN
Type of element that is unstable mostly and molten NONMETAL
Very hard computer programming language? Prayer is of no use! ADAMANT