wireless telegraph by thomas edison (1847-1931), wood engraving, published 1892 - 靜電放電 幅插畫檔、美工圖案、卡通及圖標電報機
historical illustration of electrostatic discharge from a leyden jar in 19th century france - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
victorian electric machine, an electrostatic generator, vintage illustration, 19th century, victorian - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
electrostatic induction machine, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
historical illustration of franklin's electrostatic experiment apparatus with metallic plates and discharge setup for scientific research in the - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
history science, an electrical fright, hair standing on end, victorian 19th century vintage illustration - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
historical diagram of electrical spark discharge from electrostatic experiment - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
the wimshurst machine or wimshurst influence machine is an electrostatic generator capable of generating high voltages. it was developed between 1880 and 1883 by british inventor james wimshurst, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
nineteenth-century scientific illustration of a homemade electroscope experiment using a glass jar and a balanced needle - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
inventor with early electric head lamp, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
"condensation water drain" (ball float steam trap), a classic mechanical design used to automatically remove condensate from steam-carrying pipes or vessels - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
zigzag spark of static electricity between two conductors in a 19th century scientific diagram - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
inventor with electric coil and lightbulb, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
lightning rod for weather protection, 18th century scientific instrument diagram - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
an electrical generator, apparatus of generating strong currents, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
inventor in a solenoid with a lightbulb, a solenoid a type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic fieldvictorian, vintage illustration, 19th century, - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
jacques-arsène d'arsonval's galvanometer an electromechanical measuring instrument for electric current, victorian, vintage illustration, 19th century, 1890s - 靜電放電 幅插畫檔、美工圖案、卡通及圖標
