Acoustics
Acoustics is the science of sound as it reacts to air, water and solid materials. Learn about topics from radar to white noise, plus find out why you can hear the ocean in a seashell. See more »
what's inside: physical science
Physical science is the study of the physical world around you. You can learn about everything from electricity to magnetism.
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Chemistry
Chemistry is the science of matter and the changes it undergoes during chemical reactions. In this section, learn about everyday chemistry, from chlorine beach to helium, and even why chocolate turns gray. See more »
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Electricity
Electricity is a major force of nature. In this section, you can learn how electricity works and what its potential uses are. See more »
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Energy Production
The greatest need modern civilizations have is energy. Learn about oil, electricity and newer forms of energy like solar and wind power. See more »
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Forensic Science
Forensics is the examination, through physical evidence, of a criminal event or incident. Learn about the various types of forensic disciplines and how they are used to bring the guilty to justice. See more »
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History of Physical Science
The history of physical science explains how some of the major physics concepts were discovered. Check out these articles on the history of physics. See more »
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Magnetism
Magnetism is all around us. Here you can find out how magnetism affects everything around you. See more »
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Matter
Everything in the universe is comprised of matter. Check out these articles for a better understanding of matter and how it affects you. See more »
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Mechanics
Mechanics help explain how the natural forces of nature work. Here you can learn about everything from gravity to friction. See more »
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Nuclear Science
Nuclear science is the study of sub-atomic particles and their application in various disciplines. Here you can learn about nuclear power plants, atomic theory and radiation. See more »
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Optics
Optics is the study of the properties and behavior of light. In this section you can learn about everything from holograms to lasers and lenses. See more »
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Physics
This section explores general physics as well as quantum science. Topics like quantum suicide, parallel universes and time travel are all touched upon in this section. See more »
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featured articles
How Laser Analysis Works
A venerable work of art hangs lifeless in a museum, the once brilliant scene dulled by centuries of dirt and grime. Can laser analysis and modern art restoration techniques save the masterpiece?
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videos: physical science
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How Light Works
When we see an object, we are actually seeing light -- light that somehow left the object and reached our eyes. We also encounter light in things that produce it, from light bulbs, to lasers, to lightning bugs, to the sun.
How Aluminum Works
Once considered a semiprecious metal alongside gold and silver, aluminum pretty much languished in obscurity until the 19th century. How did the metal become so ubiquitous?
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