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	Podcast:		4. Chemistry and Physics
	Episode:		Solids
	Category:		Science & Medicine
	Duration:		00:01:00
	Publish Date:		2011-07-13 19:55:21
	Description:		Transcript: The lowest temperature materials in the universe are solids, such as are found for the rocky material of our solar system or other solar systems. Solids have a rigid structure with shared electrons and the atoms enclosed in close proximity. This is true whether the solid is made of individual atoms of one element such as a mass of carbon, or molecules such as glass, or a compound such as cement. There are two basic forms of solids: amorphous, where the atoms are not in any fixed structure, and crystalline where the atoms form a lattice. In many cases the lattice structure can be reflected at large scales, such as in the crystal of a salt. The crystal of a salt as viewed under a magnifying glass represents mappings of billions of atoms in a fixed lattice form scaling right down to the scale of individual atoms.
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