4steps from the big bang
120things can go into it
dopant gases
MaterialSubstance
Gases carrying boron or phosphorus. A few atoms per million turn silicon from a poor conductor into a switch.
First appearedDate not yet known
Gases carrying boron or phosphorus. A few atoms per million turn silicon from a poor conductor into a switch.
Gases carrying boron or phosphorus. A few atoms per million turn silicon from a poor conductor into a switch.
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.