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Science and Mathematics x Electromagnetism, Optics, and Acoustics x clear all

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Duality

Ian Walmsley.

in Light

September 2015; p ublished online September 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 4092 words.

‘Duality’ considers how the two different models of light—particle and wave—were reconciled. The dualism issue was partially resolved by William Rowan Hamilton in his ‘optical analogy’...

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Electric and magnetic dipole allowed transitions of atoms for three-dimensionally isotropic left handedness in a mixed atomic vapor

Jian Qi Shen.

in Progress of Theoretical and Experimental Physics

P ublished online March 2014 .

Journal Article. Subjects: Quantum Physics; Electromagnetism, Optics, and Acoustics; Physics. 5365 words.

Since previous negative-index atomic media based on quantum optical approaches are highly lossy, a proposal for realizing a three-dimensionally isotropic left-handed atomic vapor medium is...

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Electronic sound

Mike Goldsmith.

in Sound

December 2015; p ublished online December 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 3460 words.

‘Electronic sound’ explains the conversion of sound to electricity through the development of microphones, amplifiers, and loudspeakers. There are several types of microphones, but only...

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Hearing sound

Mike Goldsmith.

in Sound

December 2015; p ublished online December 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 4419 words.

Our ears have two functions, hearing and balance, but what do they hear and how? We can experience a whole world of sound due to the precise coordination of highly evolved anatomical,...

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Light

Ian A. Walmsley.

September 2015; p ublished online September 2015 .

Book. Subjects: Electromagnetism, Optics, and Acoustics. 152 pages.

Light enables us to see the world around us, and this sensation of vision has led to a fascination with the nature and properties of light. Light: A Very Short Introduction discusses early...

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Light matters

Ian Walmsley.

in Light

September 2015; p ublished online September 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 4938 words.

There are many different ways to generate light, but they all involve electric charges moving about. When these charges accelerate, then a simple law of physics is that they emit light....

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Light rays

Ian Walmsley.

in Light

September 2015; p ublished online September 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 4371 words.

‘Light rays’ explores the idea that light is something that propagates in a straight line from the object to the viewer. Al-Hazen, in the 9th century, modified the understanding of light...

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Light, space, and time

Ian Walmsley.

in Light

September 2015; p ublished online September 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 3556 words.

For Robert Grosseteste, Bishop of Lincoln in the 13th century, the challenge of understanding light’s nature was critical to understanding the world: without light, there is no space, and...

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Lighting the frontiers

Ian Walmsley.

in Light

September 2015; p ublished online September 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 4212 words.

Despite its long history as possibly the oldest continuous branch of natural philosophy and science, optics remains at the forefront of research and application. It is ubiquitous: as a tool...

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The nature of sound

Mike Goldsmith.

in Sound

December 2015; p ublished online December 2015 .

Chapter. Subjects: Electromagnetism, Optics, and Acoustics. 6604 words.

Sound is a physical phenomenon as well as a sensual one. The relationships between the physical and sensual aspects of sound are complex in that many of the impressions sound makes on us...

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