4steps from the big bang
117things can go into it
arc furnace
ProductTool
Melts its load with a giant electric spark leaping between graphite rods.
First appearedc. 1900 (126 yrs ago)
Made Of
Everything is made of something.← What it takes
What it leads to →
Used to make
Melts its load with a giant electric spark leaping between graphite rods.
From the big bang to arc furnace
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hehelium13.8 bn yrs ago
CO2 laser1964
steelc. 1,800 BCE
arc furnacec. 1900