Nasa's Curiosity space rover will test whether there could be life on Mars using a torch with the strength of a million light bulbs. 29 November 2011 • 12:44am Nasa's Mars Science Laboratory Curiosity ...
The halogen or krypton bulbs in modern torches (USA and Canada: flashlights) have a limited life and are not particularly cheap. A simple modification in the torch lengthens the life appreciably. It ...
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