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diffraction
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What is diffraction?
Figure 16: Illumination of a point source image modified by diffraction, shown as the variation of intensity with radius.
Understand how diffraction of light affects stellar images
Understand how the diffraction of light affects how the human eye distinguishes distant objects
Figure 15: Arrangement for Fraunhofer (far-field) diffraction. The opening at S diffracts light from source P onto plane Q (see text). Figure 14: Principle of Fresnel's theory of diffraction (see text). light passing through a slit Huygens' principle single-slit diffraction double-slit experiment
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Videos

What is diffraction?
Learn about diffraction of sound, electromagnetic radiation, and small moving particles.
Video: Encyclopædia Britannica, Inc.
Understand how diffraction of light affects stellar images
Learn how diffraction affects stellar images.
Video: © MinutePhysics (A Britannica Publishing Partner)
Understand how the diffraction of light affects how the human eye distinguishes distant objects
Learn how the diffraction of light affects how the human eye distinguishes distant...
Video: © MinutePhysics (A Britannica Publishing Partner)

Images

Figure 16: Illumination of a point source image modified by diffraction, shown as...
Encyclopædia Britannica, Inc.
Figure 15: Arrangement for Fraunhofer (far-field) diffraction. The opening at S...
Encyclopædia Britannica, Inc.
Figure 14: Principle of Fresnel's theory of diffraction (see text).
Encyclopædia Britannica, Inc.
light passing through a slit
Figure 4: (A) Parallel monochromatic light incident normally on a slit, (B) variation...
Encyclopædia Britannica, Inc.
Huygens' principle
(A) Huygens' principle applied to both plane and spherical waves. Each point on the...
Encyclopædia Britannica, Inc.
single-slit diffraction
When monochromatic light passing through a single slit illuminates a screen, a characteristic...
Encyclopædia Britannica, Inc.
double-slit experiment
Figure 5: (A) Monochromatic light incident on a pair of slits gives interference...
Encyclopædia Britannica, Inc.
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