John Dollond invented the achromatic lens. He used a combination of crown and flint glasses to construct the lens.
soft glass Hard glass crown glass flint glass glass ceramics etc
flint
flint
The address of the North Flint Library is: 5005 Cloverlawn Drive, Flint, 48504 2067
flint and steel use it to detonate tnt ^.^
Flint has a waxy luster.
A flint and tinder
Flint
they were made of flint. they were made of flint. they were made of flint.
"Silex" means flint. "Silex, Michigan" means Flint, Michigan.
The address of the Flint Children'S Museum is: 1602 University Ave, Flint, MI 48504-6212