생체전지로 만든 포토그래퍼 Caleb Charland

출처 :  caleb charland 홈페이지 

http://calebcharland.com/

http://www.mymodernmet.com/profiles/blogs/caleb-charland-back-to-light

http://www.designboom.com/art/batteries-made-from-pomelos-oranges-and-vinegar-by-caleb-charland/