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  2. Cone tracing - Wikipedia

    en.wikipedia.org/wiki/Cone_tracing

    Principles. In ray tracing, rays are often modeled as geometric ray with no thickness to perform efficient geometric queries such as a ray-triangle intersection.From a physics of light transport point of view, however, this is an inaccurate model provided the pixel on the sensor plane has non-zero area.

  3. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    IDOL Enterprise Desktop Search, HP Autonomy Universal Search. Proprietary, commercial Beagle: Linux: Open-source desktop search tool for Linux based on Lucene. Unmaintained since 2009. A mix of the X11/MIT License and the Apache License: Copernic Desktop Search: Windows: Major desktop search program.

  4. Nuclear magnetic resonance spectra database - Wikipedia

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    A nuclear magnetic resonance spectra database is an electronic repository of information concerning Nuclear magnetic resonance (NMR) spectra. Such repositories can be downloaded as self-contained data sets or used online. The form in which the data is stored varies, ranging from line lists that can be graphically displayed to raw free induction ...

  5. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...

  6. List of online music databases - Wikipedia

    en.wikipedia.org/wiki/List_of_online_music_databases

    User-generated database of comparison between original tracks and covers, or songs that use samples. 460,000. 150,000. SIMUC. Chilean music and musicians. SIMUC is a Non-profit organisation that collects data on composers, academics, institutions, people and other topics related to classical music and Chile .

  7. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    List of academic databases and search engines. This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ ...

  8. List of aircraft registration prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft...

    D-AUAA to D-AZZZ (test registrations) for aircraft manufactured by Airbus at Finkenwerder. D-BAAA to D-BZZZ for aircraft with 14–20 t MTOW. D-CAAA to D-CZZZ for aircraft with 5.7–14 t MTOW. D-EAAA to D-EZZZ for single-engine aircraft up to 2 t MTOW. D-FAAA to D-FZZZ for single-engine aircraft from to 2–5.7 t MTOW.

  9. Optics Classification and Indexing Scheme - Wikipedia

    en.wikipedia.org/wiki/Optics_Classification_and...

    Optics Classification and Indexing Scheme (OCIS) is a categorization scheme used to encode the topic of an article or presentation in a 7-digit code. The system is used by the Optical Society of America in the organization of conferences and for journal publications. Authors are required to choose one or several OCIS numbers at submission.

  10. Standard Carrier Alpha Code - Wikipedia

    en.wikipedia.org/wiki/Standard_Carrier_Alpha_Code

    Standard Carrier Alpha Code. The Standard Carrier Alpha Code ( SCAC) is a privately controlled US code used to identify vessel operating common carriers (VOCC). It is typically two to four letters long. The National Motor Freight Traffic Association developed the SCAC code in the 1960s to help road transport companies computerize data and records.

  11. List of chemical databases - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_databases

    Small molecules (most of entries have <100 atoms) major conformers with its 3D and easy search on them. M. good correlated with PubChem on data that is available on PubChem. "HugeMDB". 102 million. ICSC. ILO International Chemical Safety Cards. International Labour Organization.