How Does A Heat-Seeking Missile And A Radar-homing Missile Work?
20 Mar 2008 A heat-seeking missile studies the infrared light coming toward it from the sky in front of it. It uses a lens to form a..- 88
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Can I Produce Light Without Using Electric Power?
20 Mar 2008 Since light carries energy with it, something must provide that energy. However, the energy doesn't have to come fro..- 107
speeches
How Does A Regular Lamp (light bulb) Work?
20 Mar 2008 A normal incandescent lamp contains a double-wound tungsten filament inside a gas-filled glass bulb. By "double-wound", ..- 105
speeches
Why Does An Object Like Metal Give Off Light When It Is Heated?
20 Mar 2008 All objects emit thermal radiation--electromagnetic waves that are associated with the transfer of heat. That's because ..- 95
business-sense
The Economy
20 Mar 2008 GHANA'S ECONOMY HAS LEFT an indelible imprint on the country's social and political structures. Just as the presence of..- 110
business-sense
Structure of the Economy
20 Mar 2008 Most government efforts to restore the productivity of the Ghanaian economy have been directed toward boosting the count..- 107
business-sense
Gross Domestic Product
20 Mar 2008 In current prices, Ghana's GDP rose from ¢511 billion in 1986 to ¢3 trillion in 1992. In constant 1987 prices, these GD..- 100
business-sense
Debt And Inflation
20 Mar 2008 ERP policies during the 1980s resulted in increased external debts as well as in relatively high inflation rates. Most ..- 105
business-sense
Trade
20 Mar 2008 The promotion of Ghana's foreign trade has been central to all government plans to revive the economy since 1983. Under..- 98
health
What Is Scurvy?
20 Mar 2008 Scurvy is a condition caused by a lack of vitamin C (ascorbic acid) in the diet. Signs of scurvy include tiredness, musc..- 293
health
Kwashiorkor
20 Mar 2008 A form of malnutrition; kwashiorkor is a condition resultingfrom inadequate protein intake. Causes, incidence, and risk..- 1524
