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Optical phenomena and applications

Exploring mirage, looming, diamond brilliance, total reflection, and optical fibers

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Optical phenomena and applications
From mirages to optical fibers
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Optical phenomena and applications
From mirages to optical fibers
Optical phenomena and applications1 / 17
Mirage
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How mirages form
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    Light bends due to temperature gradients in air
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    Cooler, denser air near the surface refracts light upward
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    Observer sees a virtual image of distant objects
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    Common in deserts, roads, and polar regions
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    Inferior mirage: appears below the actual object
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    Superior mirage: appears above the actual object
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Looming
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Visualizing looming
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Diagram of light rays bending downward due to a temperature inversion, creating an elevated image of a ship
Diagram of light rays bending downward due to a temperature inversion, creating an elevated image of a ship
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Causes and effects of looming
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    Occurs due to temperature inversion in the atmosphere
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    Light rays bend toward the cooler, denser air
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    Objects appear taller or elevated above their true position
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    Often observed at sea or in cold climates
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Brilliancy of diamond
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Why diamonds sparkle
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    High refractive index (2.42) bends light significantly
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    Critical angle of 24.4 degrees enables total internal reflection
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    Light reflects multiple times inside the diamond
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    Dispersion splits light into spectral colors
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    Cut and facets maximize light reflection and refraction
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    Brilliance is a combination of brightness, fire, and scintillation
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Diamond light path
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Illustration of light entering a diamond, reflecting internally, and exiting as colorful rays
Illustration of light entering a diamond, reflecting internally, and exiting as colorful rays
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Total reflecting prism
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How prisms work
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    Light enters the prism and strikes a surface at an angle greater than the critical angle
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    Total internal reflection occurs, redirecting the light path
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    Prisms can invert, deviate, or rotate images without chromatic aberration
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    Common materials include glass or acrylic with high refractive indices
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Prism in action
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Diagram of a right-angle prism showing light entering, reflecting twice, and exiting at 90 degrees to the original path
Diagram of a right-angle prism showing light entering, reflecting twice, and exiting at 90 degrees to the original path
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Optical fiber
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Optical fiber basics
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    Thin, flexible strands of glass or plastic
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    Light travels through the core by total internal reflection
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    Cladding surrounds the core to prevent light leakage
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    High bandwidth enables fast data transmission
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    Low signal loss over long distances
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    Immune to electromagnetic interference
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Applications of optical fibers
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    Telecommunications: internet, cable TV, and phone networks
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    Medical: endoscopes and laser surgery
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    Industrial: sensing and imaging in harsh environments
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    Military: secure data transmission and sensing
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Optical fiber in use
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Image of a fiber optic cable with light visible through the strands, or a diagram of data transmission through fibers
Image of a fiber optic cable with light visible through the strands, or a diagram of data transmission through fibers
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Optical phenomena in our world
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Mirage and looming: nature’s optical illusions • Diamond brilliance: the art of light manipulation • Prisms and fibers: engineering light for technology

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