91av

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ACROSS

ÌýÌýÌýÌý 9ÌýÌý Chemical compound widely used as an insecticide (15)

ÌýÌý 10ÌýÌý Name given to certain species of baleen whale (7)

ÌýÌý 12ÌýÌý Thomas ___ (1757–1834), Scottish engineer, best-known for the Menai Bridge in Wales (7)

ÌýÌý 13ÌýÌý References to other work (in scientific papers and so on) (9)

ÌýÌý 14ÌýÌý A group of apes, baboons or lemurs (5)

ÌýÌý 15ÌýÌý Old term for a painkilling drug (7)

ÌýÌý 18ÌýÌý The ___, 1623 work by Galileo Galilei (7)

ÌýÌý 21ÌýÌý Paul ___ (1902–84), British theoretical physicist (5)

ÌýÌý 23ÌýÌý In a fraction, the integer placed above the line (9)

ÌýÌý 25ÌýÌý A completed loop, in electronics (7)

ÌýÌý 26ÌýÌý In geometry, lozenge- or diamond-shaped (7)

ÌýÌý 29ÌýÌý Program that manages a computer’s software and hardware (9,6)

DOWN

ÌýÌýÌýÌý 1ÌýÌý Niels ___ (1885–1962), Danish physicist (4)

ÌýÌýÌýÌý 2ÌýÌý Jelly-like substance often used in microbiological experiments (4)

ÌýÌýÌýÌý 3ÌýÌý California city, noted for its many manufacturing businesses and small population (8)

ÌýÌýÌýÌý 4ÌýÌý US human spaceflight programme launched in 1961 (6)

ÌýÌýÌýÌý 5ÌýÌý Ocean region beneath which the Viking Gas Field was discovered in 1965 (5,3)

ÌýÌýÌýÌý 6ÌýÌý In computing, a small application – often a plug-in – that performs a specific task (6)

ÌýÌýÌýÌý 7ÌýÌý The science of classification (8)

ÌýÌýÌýÌý 8ÌýÌý Aluminosilicate mineral that makes up more than half of Earth’s crust (8)

ÌýÌý 11ÌýÌý Constellation in which the stars Betelgeuse and Rigel can be seen (5)

ÌýÌý 15ÌýÌý In the human body, a muscle that draws towards the centre of the body or limb (8)

ÌýÌý 16ÌýÌý Mechanical models of the solar system (8)

ÌýÌý 17ÌýÌý ‘___ was a giant. His head was in the clouds, but his feet were on the ground’ – Richard Feynman (8)

ÌýÌý 19ÌýÌý Red-striped form of the mineral chalcedony (8)

ÌýÌý 20ÌýÌý Bacterium that can cause severe food poisoning in humans (1,4)

ÌýÌý 22ÌýÌý Concerned with actions and their consequences (6)

ÌýÌý 24ÌýÌý An optical illusion – or a French combat aeroplane (6)

ÌýÌý 27ÌýÌý Second letter of the Greek alphabet; a form of radiation; a software prototype (4)

ÌýÌý 28ÌýÌý Galaxy cluster some 330 million light-years from earth (4)

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