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  2. Detection theory - Wikipedia

    en.wikipedia.org/wiki/Detection_theory

    Detection theory or signal detection theory is a means to measure the ability to differentiate between information-bearing patterns (called stimulus in living organisms, signal in machines) and random patterns that distract from the information (called noise, consisting of background stimuli and random activity of the detection machine and of the nervous system of the operator).

  3. Absolute threshold - Wikipedia

    en.wikipedia.org/wiki/Absolute_threshold

    Under the influence of signal detection theory, absolute threshold has been redefined as the level at which a stimulus will be detected a specified percentage (often 50%) of the time. [1] The absolute threshold can be influenced by several different factors, such as the subject's motivations and expectations, cognitive processes, and whether ...

  4. LZ experiment - Wikipedia

    en.wikipedia.org/wiki/LZ_experiment

    The experiment uses an ultra-sensitive detector made of 7 tonnes of liquid xenon to hunt for signals of WIMP-nucleus interactions. It is one of three such experiments which lead the search for direct detection of WIMPs above 10 GeV/c 2, the other two being the XENONnT experiment and the PANDAX-4T experiment.

  5. Detection limit - Wikipedia

    en.wikipedia.org/wiki/Detection_limit

    The detection limit (according to IUPAC) is the smallest concentration, or the smallest absolute amount, of analyte that has a signal statistically significantly larger than the signal arising from the repeated measurements of a reagent blank. Mathematically, the analyte's signal at the detection limit is given by:

  6. Insensitive nuclei enhanced by polarization transfer - Wikipedia

    en.wikipedia.org/wiki/Insensitive_nuclei...

    The sensitivity of NMR signal detection depends on the gyromagnetic ratio (γ) of the nucleus. In general, the signal intensity produced from a nucleus with a gyromagnetic ratio of γ is proportional to γ 3 because the magnetic moment, the Boltzmann populations, and the nuclear precession frequency all increase in proportion to the gyromagnetic ratio γ.

  7. ANAIS-112 - Wikipedia

    en.wikipedia.org/wiki/ANAIS-112

    ANAIS' goal is to confirm or refute in a model independent way the DAMA/LIBRA [1] [2] [3] experiment positive result: an annual modulation in the low-energy detection rate having all the features expected for the signal induced by weakly interacting dark matter particles in a standard galactic halo. This modulation is produced as a result of ...

  8. John A. Swets - Wikipedia

    en.wikipedia.org/wiki/John_A._Swets

    He played a key role in the adaptation of signal detection theory first to the psychology of perception [2] [3] and later as a central tool in medical diagnostics. [4] He was a member of the National Academy of Sciences .

  9. Delayed-choice quantum eraser - Wikipedia

    en.wikipedia.org/wiki/Delayed-choice_quantum_eraser

    In the basic double-slit experiment, a beam of light (usually from a laser) is directed perpendicularly towards a wall pierced by two parallel slit apertures.If a detection screen (anything from a sheet of white paper to a CCD) is put on the other side of the double-slit wall (far enough for light from both slits to overlap), a pattern of light and dark fringes will be observed, a pattern that ...