May, 1917 THE ELECTRICAL EXPERIMENTER 13 SOURCES OF ELECTRICITY THE GAS BATTERY . ' ELECTRICITY FROM CRYSTALS PLATINUM BY HEATING ’ STRIPS CRYSTAL UNDER PRESSURE ELECTROSCOPE mit aly = Fr OXIDIZED COREE. (For description see opposite page.)
Radio · Periodicals · Electrical Experimenter
Internet Archive · Curtis Philips · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Diagrams of natural philosophy / James Reynolds]. (1850)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b28750561-47-1.webp)
