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 channel
Physical science is the study of the properties and structures of matter, space and time. This section introduces major concepts in physics, as well as exploring special areas like special relativity and forensics.
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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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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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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 Lasers Work
Lasers are used in CD players, dental drills, eye surgery, and even tattoo removal. But what exactly is a laser? There are numerous types, but all lasers work basically the same way. Learn how they generate such concentrated beams of light.
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videos: physical science
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How Atoms Work
What exactly is an atom? What is it made of? What does it look like? The pursuit of the structure of the atom has married many areas of chemistry and physics in perhaps one of the greatest contributions of modern science!
How Impression Evidence Works
Criminals always leave traces behind after a crime is committed. In fact, footprints, tire tracks and tool marks are often more prevalent than fingerprints at a crime scene. What can impression evidence tell an investigator?
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