Questions and Answers
What is the main goal of physics?
To understand how the universe behaves
Which scientific discipline emerged as unique research endeavors in their own right during the Scientific Revolution in the 17th century?
Physics
Which academic discipline is perhaps the oldest, including its inclusion of astronomy?
Physics
What is a scientist who specializes in the field of physics called?
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In addition to biophysics and quantum chemistry, physics intersects with which other interdisciplinary areas of research?
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What are eddy currents also known as?
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In what planes do eddy currents flow within conductors?
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What is the magnitude of the current in a given loop proportional to?
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What do eddy currents look like when graphed within a piece of metal?
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According to Lenz's law, what does an eddy current create?
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Study Notes
Physics Overview
- The main goal of physics is to understand the natural world around us.
Historical Development
- During the Scientific Revolution in the 17th century, physics emerged as a unique research endeavor in its own right.
- Physics is perhaps the oldest academic discipline, including its inclusion of astronomy.
Physicists and Interdisciplinary Research
- A scientist who specializes in the field of physics is called a physicist.
- Physics intersects with interdisciplinary areas of research, including biophysics, quantum chemistry, engineering, and computer science.
Eddy Currents
- Eddy currents are also known as Foucault currents.
- Eddy currents flow within conductors in planes perpendicular to the changing magnetic field.
- The magnitude of the current in a given loop is proportional to the rate of change of the magnetic flux.
- When graphed within a piece of metal, eddy currents resemble whirlpools or swirls.
- According to Lenz's law, an eddy current creates a magnetic field that opposes the change in the original magnetic field.
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