Memory Foam

[caption id="attachment_249" align="aligncenter" width="302"] Hand Impression in Memory Foam[/caption]   Visco-elastic memory foam was developed from polyurethane.  It is denser than polyurethane, and is also more sensitive to heat.  When someone sits or lies on it, the memory foam becomes softer, allowing the person to sink into it. This way it conforms to a sitter’s or sleeper’s body contours. The memory foam can be formulated to be more or less heat sensitive, therefore...

Cotton

[caption id="attachment_387" align="aligncenter" width="800"] Cotton bolls ready for harvest[/caption]   Cotton is made from fibers in the seedpods of plants in the Gossypium genus of the Mallow family.  The name "cotton" comes from goz, Arabic for "soft material."  From Arabic comes the Spanish algodon, then English cotton.  Cultivation of cotton is as old as civilization in Asia, Africa and Central America.  It was introduced into what is now the United States in 1556 in...

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