| NEWTON | First to describe gravity whose discovery that white light is made up of a mixture of colours is described in his treatise Opticks (6) |
| CYAN | Uncapped fancy mixture of colour (4) |
| LANTERN | In the North, rental is called for before light is made available (7) |
| STRAY | Street light is made to go off |
| SPECTRUM | Word for the band of colours into which a beam of white light is decomposed, as seen in a rainbow; hence any array, range or scale (8) |
| SPECTRA | Bands of colours observed in rainbows or when white light is dispersed through prisms; or, the frequencies of electromagnetic radiation (7) |
| OPAL | Meaning "precious stone", an iridescent gem whose red play of colours is described as its fire (4) |
| PALETTE | Range of colours is allowed and spread outside (7) |
| CONCRETE | A construction material made of a mixture of cement, sand, stone and water that hardens to a stonelike mass (8) |
| SCENE | Subdivision of an act of a play; or, a sequence of action in a film made up of a series of shots (5) |
| HADRAMAUT | Region in east-central Yemen, on the Gulf of Aden, made up of a hilly area near the coast and an inland valley occupied by a seasonal watercourse, the Wadi a¸¤aa¸Âramawt, that runs parallel to the |
| HERSCHEL | Astronomer whose discovery of what he believed to be a comet, was later identified as a planet and renamed Uranus (8) |
| LOAM | A rich soil consisting of a mixture of sand and clay and decaying organic materials (4) |
| SCREW | This tool is usually made up of a circular cylindrical member with a continuous helical rib, used either as a fastener or as a force and motion modifier. The Greek scientist Archimedes developed one t |
| HYDROGEN | The simplest element; it combines with oxygen to make water. Each atom is made up of a single proton and a single electron. |
| ATOM | Unit of matter made up of a dense nucleus surrounded by a cloud of electrons (4) |
| ACRONYM | A pronounceable name made up of a series of initial letters or parts of words (7) |
| PINKFLOYD | Band whose The Dark Side of the Moon album art features white light passing through a prism to form a spectrum (4,5) |
| SOHO | John Snow's study of an outbreak of cholera in this London West End area led to the discovery that water supplies were the means of spreading this disease |
| HUBBLE | Edwin, American astronomer whose work led to the discovery that the universe is expanding (6) |
