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Daniel Davis Jr. (February 8, 1813 – March 22, 1887) was an American philosophical instrument maker, electrical engineer, mechanic, photographer, daguerreotypist and ambrotypist. Through the course of his work he became known for his practical knowledge and understanding of electromagnetic principles. He worked with college professors, notable electricians and popular scientists of the nineteenth century. He was consulted for practical knowledge on mechanics and electricity by inventors: including Samuel Morse for his telegraph and Elias Howe for his sewing machine. He was the first man in the United States to work with gold and silver electroplating, patented a method for coloring daguerrotypes through electroplating in 1842, and sold franchises to others for photographic studios. Davis published an exhaustive work on electromagnetism that became a textbook for academies, high schools, and colleges.

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ダニエル・デイヴィス・ジュニア（ Daniel Davis Jr .、1813年2月8日– 1887年3月22日）は、アメリカ合衆国の哲学的楽器製作者、電気技術者、機械工、写真家、ダゲレオタイピスト、アンブロタイピストであった。彼は仕事を通じて、電磁原理の実践的な知識と理解で知られるようになりました。彼は大学の教授たちと一緒に働いていました。

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Daniel Davis Jr. (8 February 1813 – 22 March 1887) was an American philosophical instrument maker, electrician, mechanic, photographer, daguerreotypist, and ambrotypist. Through his work, he gained practical knowledge and understanding of electromagnetic principles

INTO JAPANESE

ダニエル・デイヴィス・ジュニア（ Daniel Davis Jr .、1813年2月8日– 1887年3月22日）は、アメリカ合衆国の哲学的楽器製作者、電気技師、機械工、写真家、ダゲレオタイピスト、アンブロタイピストであった。彼の仕事を通じて、電磁原理の実践的な知識と理解を得た。

BACK INTO ENGLISH

Daniel Davis Jr. (8 February 1813 – 22 March 1887) was an American philosophical instrument maker, electrician, mechanic, photographer, daguerreotypist, and ambrotypist. Through his work, he gained practical knowledge and understanding of electromagnetic principles