A Coggle Diagram about History.
(1249 They were invented.
, By Roger Bacon.
, They were probably first used by Chinese people.
, The first frame was created by Salvino Delgli.
and In 1629 the popularity of gasses explodes.
), What they are?
(They are composed by a glass,
, And a frame.
, The glass needs to have a formula to work.
and Now a days we have ergonomic frames.
(The frame is usually made of.
and They have glass with a certain formula
) and what are they for.
(They are used by people with
and They help with the health of the eyes