What Is a Laser Beam?

A laser beam is a stream of focused, coherent light in a single wavelength. There are many different uses for a laser beam...

Jacob Queen
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Wind power is one form of green energy. Science

What is Green Energy?

Green energy is energy that has a less negative impact on the environment than traditional energy sources. Green energy typically...

Phil Shepley
Nitrile gloves are a common alternative to latex for medical professionals who develop an allergy. Science

What are Nitrile Gloves?

Nitrile gloves are disposable gloves made of synthetic latex. Many consider nitrile gloves superior to latex gloves because...

Garry Crystal

Editors' Picks

Oxidized metal gears. Science

What is Oxidation?

Oxidation is the interaction between oxygen molecules and other substances. Most people see oxidation every day when they...

Michael Pollick
DNA is manipulated through genetic engineering. Science

What is Genetic Engineering?

Genetic engineering is manipulation of cell DNA. Though many people question the ethics, genetic engineering is commonly used for...

S. Scolari
A civil engineer might help build dams, bridges, or roads. Science

What is Engineering?

Engineering involves the harnessing of math and science to create practical, useful things. Engineering includes everything from...

Mary McMahon
Typically constructed on steel and concrete, cantilever bridges can hold heavy loads, such as constant automobile traffic. Science

What is a Cantilever?

A cantilever is a beam supported only on one end that carries a load at the other end. The structure of a cantilever means that it...

Daniel Liden

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Strato or conical volcanoes, are the most recognizable type of volcano. Science

What is a Volcano?

A volcano is an opening in the Earth's crust where hot magma from the mantle reaches the surface. There are seven main types of...

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Superheated plasmas may be used to initiate nuclear fusion transactions. Science

What is Plasma?

Plasma is a substance that is neither solid, liquid, nor gaseous. It is used in everything from Tesla coils to everyday items like..

Michael Anissimov
Solar panels can be installed on buildings to capture the sun's rays and convert them into energy. Science

What Is Solar Power?

Solar power is energy derived from the sun and converted into heat or electricity. Versatile and renewable, solar power can...

Nicole Madison
Kearny Mesa astronaut centrifuge. Science

What is a Centrifuge?

A centrifuge is a device that spins quickly to press objects outward with centrifugal force. Centrifuges are commonly used in...

Jeff Petersen

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