Example image of eyePlorer eyePlorer map for 'Arc welding': Electric arc Welding power supply Alternating current Direct current Electrode Inert gas Shielding gas Bronze Age Forge welding Iron Age 1802 C. L. Coffin Carbon Carbon arc welding Vasily Vladimirovich Petrov United Kingdom Flux (metallurgy) Oxy-fuel welding and cutting Resistance welding Rivet Shipbuilding World War I Germany New York Harbor Cammell Laird Argon Brittleness Helium Hydrogen Porosity Aluminium Magnesium World War II Submerged arc welding Ferrous Gas metal arc welding Gas tungsten arc welding Carbon dioxide Flux-cored arc welding Plasma arc welding Electrogas welding Electroslag welding Electric current Voltage Anode Sine wave Square wave Shielded metal arc welding Redox Cast iron