Browse Reference Articles
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Solar wind
A solar wind is a stream of charged particles (i.e., a plasma) which are ejected from the upper atmosphere of a star. When originating from stars other than the Earth's Sun, it is sometimes called a ... > more -
Lewis structure
Lewis structures, also called electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the ... > more -
Helicopter
A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors (propellers). Helicopters are classified as rotary-wing aircraft to distinguish them from conventional ... > more -
Construction
Sports Science
Engineering and Construction
Computer Science
Technology
Computers and Internet
Xanadu House
The Xanadu Houses were a series of experimental homes, built to showcase examples of computers and automation in the home in the United ... > more -
Alternative Fuels
Energy and the Environment
Energy and Resources
Renewable Energy
Fuel Cells
Energy Technology
Ethanol fuel
The use of ethanol as a fuel for internal combustion engines, either alone or in combination with other fuels, has been given much attention mostly because of its possible environmental and long-term ... > more
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