Алотропна форма на елемента въглерод. Най-твърдото вещество в природата.
The least tightly packed crystal structure.
Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.
The face-centred cubic metal lattice allows the closest fit of metal atoms.
A crystalline allotrope of carbon which was discovered at the end of the 1980s.
Metals forming hexagonal metallic lattices are rigid and difficult to machine.
The invention of the ballpoint pen made writing a lot easier.
A crystalline substance, an extremely important material in the electronics industry ...
A polymorphic compound, mostly found in the form of quartz.