ELLIOT(1875) p357 - Plate XLVIII. Lens for electric light.jpg
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ELLIOT(1875) p357 Plate XLVIII. Lens for electric light, European Light-House Systems (1875) by ELLIOT, Uploaded by the British Library, Images from the British Library Mechanical Curator collection, Images from the British Library
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ELLIOT 、p357 プレートXLVIII。電気照明用レンズ、欧州光住宅システム(1875)、大英図書館、大英図書館機械学蔵の画像、大英図書館蔵の画像
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electric lamp electrical engineer light bulb