Single-stage pump

A device that is used to give a controlled amount of a liquid at a specific rate. For example, pumps are used to give drugs (such as chemotherapy or pain medicine) or nutrients.

asteroid mining

Mining; General mining

The future industry of sending spacecraft to asteroids in order to harvest their natural resources and bring them back to civilization for use. On April 24th 2012, the first real ...

rock

Mining; General mining

A mineral that forms inside the earth as marble and granite are rocks; a huge amount of stone that forms a cliff or mountain is called as rock.

beryl

Mining; General mining

A greenish mineral that usually lets light shine through it and is found mostly in igneous and metamorphic rocks.

corundum

Mining; General mining

A very hard mineral made mainly of aluminum and oxygen. Rubies and sapphires are types of corundum.

feldspar

Mining; General mining

A mineral that makes up more than 60 percent of the Earth's crust. The pink and white flecks in granite consist of feldspar.

geode

Mining; General mining

A hollow, rounded rock that is lined on the inside with crystals is called geode.

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Industry/Domain: History Category: Ancient Greece

Laconia

Mountainous region in the central-southern Peloponnese and the home territory of Sparta, which drew on the fertility of the Eurotas valley between the ...