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Flame retardancy meaning

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Half waveplate

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Approximate picture size for various 16mm projection distances. Note: These are not exact, but are close. To determine exactly, you should test the actual ...

Retardancy

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Zero order waveplate

Retardancemeaning

Apr 8, 2023 — Calculating total magnification of microscopes requires knowing the magnification of the ocular (eyepiece) and of the objective lens being ...

We present two figures of merit based on singular value decomposition, which can be used to assess the noise immunity of a complete Stokes polarimeter. These are used to optimize a polarimeter featuring a rotatable retarder and a fixed polarizer. A retardance of 132° (approximately three-eighths wave) and retarder orientation angles of ±51.7° and ±15.1° are found to be optimal when four measurements are used. Use of this retardance affords a factor-of-1.5 improvement in signal-to-noise ratio over systems employing a quarter-wave plate. A geometric means of visualizing the optimization process is discussed, and the advantages of the use of additional measurements are investigated. No advantage of using retarder orientation angles spaced uniformly through 360° is found over repeated measurements made at the four retarder orientation angles.

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Waveplate

Aug 2, 2022 — Instead, if you must use a cleaner, use an eyeglass cleaner or lens cleaner. Spray the microfiber cloth instead of the lens. This will keep ...

by JJ Lunazzi · 2007 · Cited by 22 — Color encoding of depth is shown to occur naturally in images of objects observed through diffraction gratings under common white light illumination.

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HT Nguyen · 1997 · 103 — We describe the design, fabrication, and performance of high-efficiency transmission gratings fabricated in bulk fused silica for use in high-power ultraviolet ...

We present two figures of merit based on singular value decomposition, which can be used to assess the noise immunity of a complete Stokes polarimeter. These are used to optimize a polarimeter featuring a rotatable retarder and a fixed polarizer. A retardance of 132° (approximately three-eighths wave) and retarder orientation angles of ±51.7° and ±15.1° are found to be optimal when four measurements are used. Use of this retardance affords a factor-of-1.5 improvement in signal-to-noise ratio over systems employing a quarter-wave plate. A geometric means of visualizing the optimization process is discussed, and the advantages of the use of additional measurements are investigated. No advantage of using retarder orientation angles spaced uniformly through 360° is found over repeated measurements made at the four retarder orientation angles.