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  2. Speckle variance optical coherence tomography - Wikipedia

    en.wikipedia.org/wiki/Speckle_variance_optical...

    SV-OCT can be done with spectral domain OCT (SD-OCT) and swept source OCT (SS-OCT). [5] SD-OCT and SS-OCT are both methods of Fourier domain OCT (FD-OCT), which has significantly faster image acquisition speed compared to time domain OCT. In general, OCT measures the echo time delay and intensity of reflected and backscattered light.

  3. Optical coherence tomography - Wikipedia

    en.wikipedia.org/wiki/Optical_coherence_tomography

    Optical coherence tomogram of a fingertip. It is possible to observe the sweat glands, having "corkscrew appearance" Interferometric reflectometry of biological tissue, especially of the human eye using short-coherence-length light (also referred to as partially-coherent, low-coherence, or broadband, broad-spectrum, or white light) was investigated in parallel by multiple groups worldwide ...

  4. Digital coupon - Wikipedia

    en.wikipedia.org/wiki/Digital_coupon

    7-Eleven e-coupon from Taiwan. Digital coupons (also known as e-coupons, e-clips or clipped deals) are the digital analogue of paper coupons which are used to provide customers with discounts or gifts in order to attract the purchase of some products. Mostly, grocery and drug stores offer e-coupon services in loyalty program events.

  5. Coupon - Wikipedia

    en.wikipedia.org/wiki/Coupon

    The above applies when the retailer is the source of the coupon, since the product is offered at the post-coupon price. In jurisdictions seeking to tax more, [25] if the coupon is issued by the manufacturer, the original price is still paid but some of the price is covered by the manufacturer instead of the consumer and the full price remains ...

  6. RetailMeNot - Wikipedia

    en.wikipedia.org/wiki/RetailMeNot

    RetailMeNot was established to aggregate coupon offers and make them available to consumers. It distributes coupons in retail categories including accessories, automotive, baby products, beauty products, clothing, electronics, furniture, health, home and garden, jewelry, pets, photography, toys and travel.

  7. Sweep generator - Wikipedia

    en.wikipedia.org/wiki/Sweep_generator

    Sweep generator in Lawrence Livermore National Laboratory, 1950. A sweep generator is a piece of electronic test equipment similar to, and sometimes included on, a function generator which creates an electrical waveform with a linearly varying frequency and a constant amplitude.

  8. Coupon-eligible converter box - Wikipedia

    en.wikipedia.org/wiki/Coupon-eligible_converter_box

    A coupon-eligible converter box (CECB) was a digital television adapter that met eligibility specifications for subsidy "coupons" from the United States government.The subsidy program was enacted to provide terrestrial television viewers with an affordable way to continue receiving free digital terrestrial television services after the nation's television service transitioned to digital ...

  9. Great Chicago Fire - Wikipedia

    en.wikipedia.org/wiki/Great_Chicago_Fire

    The Great Chicago Fire was a conflagration that burned in the American city of Chicago during October 8–10, 1871. The fire killed approximately 300 people, destroyed roughly 3.3 square miles (9 km 2) of the city including over 17,000 structures, and left more than 100,000 residents homeless. [3]