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🔗 California

Early on the morning of May 16, 1946, a U.S. Army B-17 Flying Fortress aircraft crashed into White's Hill (also known locally as "White Hill") near Fairfax, California. Two men were killed and six seriously injured. There were reports that the B-17 was carrying nuclear weapons materials for the Operation Crossroads tests at Bikini atoll, but these reports were not confirmed. However, due to the behavior and activities of the military authorities at the crash site and the reports of several credible witnesses, including several of the crewmembers, questions about the plane's cargo remain.

The frog galvanoscope was a sensitive electrical instrument used to detect voltage in the late eighteenth and nineteenth centuries. It consists of skinned frog's leg with electrical connections to a nerve. The instrument was invented by Luigi Galvani and improved by Carlo Matteucci.

The frog galvanoscope, and other experiments with frogs played a part in the dispute between Galvani and Alessandro Volta over the nature of electricity. The instrument is extremely sensitive and continued to be used well into the nineteenth century, even after electromechanical meters came into use.

🔗 Computer science

The Rule 110 cellular automaton (often simply Rule 110) is an elementary cellular automaton with interesting behavior on the boundary between stability and chaos. In this respect, it is similar to Conway's Game of Life. Like Life, Rule 110 is known to be Turing complete. This implies that, in principle, any calculation or computer program can be simulated using this automaton.

🔗 Aviation 🔗 Aviation/aircraft 🔗 United Kingdom 🔗 British Empire 🔗 Aviation/Defunct Airlines

The British Imperial Airship Scheme was a 1920s project to improve communication between Britain and the distant countries of the British Empire by establishing air routes using airships. This led to the construction of two large and technically advanced airships, the R100 and the R101. The scheme was terminated in 1931 following the crash of R101 in October 1930 while attempting its first flight to India.

🔗 Religion 🔗 Japan 🔗 Japan/Religion 🔗 Japan/Shinto

Sangaku or San Gaku (算額; lit. translation: calculation tablet) are Japanese geometrical problems or theorems on wooden tablets which were placed as offerings at Shinto shrines or Buddhist temples during the Edo period by members of all social classes.

🔗 Insects 🔗 Insects/Ant 🔗 Fungi

Ant–fungus mutualism is a symbiosis seen in certain ant and fungal species, in which ants actively cultivate fungus much like humans farm crops as a food source. In some species, the ants and fungi are dependent on each other for survival. The leafcutter ant is a well-known example of this symbiosis. A mutualism with fungi is also noted in some species of termites in Africa.

🔗 Occupational Safety and Health 🔗 Scuba diving

An incident pit is a conceptual pit with sides that become steeper over time and with each new incident until a point of no return is reached. As time moves forward, seemingly innocuous incidents push a situation further toward a bad situation and escape from the incident pit becomes more difficult. An incident pit may or may not have a point of no return such as an event horizon.

It is a term used by divers, as well as engineers, medical personnel, and technology management personnel, to describe these situations and more importantly to avoid becoming ensnared.

🔗 Film 🔗 Law 🔗 Film/American cinema 🔗 Film/Filmmaking

The Writers Guild of America (WGA) writing credit system for motion pictures and television programs covers all works under the jurisdiction of the Writers Guild of America, East (WGAE) and the Writers Guild of America, West (WGAW). Since 1941, the Screen Writers Guild and then the WGA has been the final arbiter of who receives credit for writing a theatrical, television or new media motion picture written under their jurisdiction. Though the system has been a standard since before the WGA's inception, it has seen criticism.

🔗 Languages 🔗 Deaf 🔗 Nicaragua

Nicaraguan Sign Language (ISN; Spanish: Idioma de Señas de Nicaragua) is a sign language that was largely spontaneously developed by deaf children in a number of schools in western Nicaragua in the 1970s and 1980s. It is of particular interest to the linguists who study it because it offers a unique opportunity to study what they believe to be the birth of a new language.

🔗 Computing 🔗 Photography 🔗 Computer graphics

Design rule for Camera File system (DCF) is a JEITA specification (number CP-3461) which defines a file system for digital cameras, including the directory structure, file naming method, character set, file format, and metadata format. It is currently the de facto industry standard for digital still cameras. The file format of DCF conforms to the Exif specification, but the DCF specification also allows use of any other file formats.

The latest version of the standard is 2.0 (2010 edition).