Swiss scientist Horace de Saussure builds the world’s first solar collector. It is later used by Sir John Herschel to cook food during his South Africa expedition in the 1830s. (US Department of Energy 2002 
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Swiss scientist Horace de Saussure builds the world’s first solar collector. It is later used by Sir John Herschel to cook food during his South Africa expedition in the 1830s. (US Department of Energy 2002 )
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