5steps from the big bang
119things can go into it
lens
ComponentPart
A curved piece of glass that bends light. The same idea works in eyes, cameras and telescopes.
First appearedc. 750 BCE
Made Of
Everything is made of something.← What it takes
What it leads to →
Made from
Goes into
A curved piece of glass that bends light. The same idea works in eyes, cameras and telescopes.
From the big bang to lens
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
Hhydrogen13.8 bn yrs ago
water4.4 bn yrs ago
sanddate unknown
glassc. 3,500 BCE
lensc. 750 BCE