- published: 16 Mar 2015
- views: 12619462
A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly, repeating pattern extending in all three spatial dimensions. In addition to their microscopic structure, large crystals are usually identifiable by their macroscopic geometrical shape, consisting of flat faces with specific, characteristic orientations.[citation needed]
The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word crystal is derived from the Ancient Greek word κρύσταλλος (krustallos), meaning both “ice” and “rock crystal”, from κρύος (kruos), "icy cold, frost".
Common crystals include snowflakes, diamonds, and table salt; however, most common inorganic solids are polycrystals. Crystals are often symmetrically intergrown to form crystal twins.
Halite (table salt, NaCl): Microscopic and macroscopic
The scientific definition of a "crystal" is based on the microscopic arrangement of atoms inside it, called the crystal structure. A crystal is a solid where the atoms form a periodic arrangement. (Quasicrystals are an exception, see below.)
Oh yeah, maybe, baby
Get the heebie jeebies
Got the shakes
And I got a funny feelin'
That you got just what it takes
And, oh, yeah, maybe, baby
Maybe, baby, I'm fallin' in love
Gee, you make me lovesick
That's for sure
And I got a funny feelin'
I don't wanna find a cure
And, oh, yes, maybe, baby
Maybe, baby, I'm fallin' in love, in love
I don't need a doctor
Need no pills
And I got a funny feelin'
And the fever and the chills
And, oh, yes, maybe, baby
Yes, yes, yes, maybe