Everything about Semaphore
Mechanical apparatus used to send messages
Semaphore is the use of an apparatus to create a visual signal transmitted over distance. A semaphore can be performed with devices including: fire, lights, flags, sunlight, and moving arms. Semaphores can be used for telegraphy when arranged in visually connected networks, or for traffic signalling such as in railway systems, or traffic lights in cities. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: SemaphoreA 5-minute orientation
- Skim a recent paper: Semaphore Recognition Using Deep LearningInfluential work since 2022
- Pick up a classic book: Emile Zola, journalisteThe most-reprinted book on the subject
- Read the landmark paper: Meddy trajectories in the Canary Basin measured during the SEMAPHORE experiment, 1993–1995Cited 80 times
- Go sideways: Optical communicationA closely related topic
- Go sideways: TelegraphyA closely related topic
📖 Definitions
Noun Any equipment used for visual signalling by means of flags, lights, or mechanically moving arms, which are used to represent letters of the alphabet, or words.
Noun A visual system for transmitting information using the above equipment; especially, by means of two flags held one in each hand, using an alphabetic and numeric code based on the position of the signaller's arms; flag semaphore.
Noun A bit, token, fragment of code, or some other mechanism which is used to restrict access to a shared function or device to a single process at a time, or to synchronize and coordinate events in different processes.
Verb To signal using, or as if using, a semaphore, with the implication that it is done nonverbally.
🏆 Landmark papers (most cited)
Meddy trajectories in the Canary Basin measured during the SEMAPHORE experiment, 1993–1995
Inertial dissipation method applied to derive turbulent fluxes over the ocean during the Surface of the Ocean, Fluxes and Interactions with the Atmosphere/Atlantic Stratocumulus Transition Experiment (SOFIA/ASTEX) and Structure des Echanges Mer‐Atmosphere, Proprietes des Heterogeneites Oceaniques: Recherche Experimentale (SEMAPHORE) experiments with low to moderate wind speeds
The Semaphore crab, Heloecius cordiformis: bio-indication potential for heavy metals in estuarine systems
Study of the air-sea interactions at the mesoscale: the SEMAPHORE experiment
Effect of boardwalks on the semaphore crab Heloecius cordiformis in temperate urban mangrove forests
Phylogenetic relationships of Semaphore geckos (Squamata: Sphaerodactylidae: Pristurus) with an assessment of the taxonomy of Pristurus rupestris
A three‐dimensional ocean mesoscale simulation using data from the SEMAPHORE experiment: Mixed layer heat budget
Large structures and temporal change in the Azores Front during the SEMAPHORE experiment
🆕 Influential since 2022
Semaphore Recognition Using Deep Learning
Comparative Study of Methods for Caries Risk Evaluation: CAMBRA, the Cariogram, and Caries Risk Semaphore
Seismic Damage “Semaphore” Based on the Fundamental Period Variation: A Probabilistic Seismic Demand Assessment of Steel Moment-Resisting Frames
Classifying the Mexican epidemiological semaphore colour from the Covid-19 text Spanish news
Tocilizumab dans la pseudopolyarthrite rhizomélique corticorésistante : évaluation médicoéconomique conduite à partir des données de l’essai randomisé contrôlé SEMAPHORE
📚 Books worth reading
- 📕Emile Zola, journaliste · 1972
- 📕Lettres de Paris, Notes parisiennesÉmile Zola · 1981
- 📕O. A. C. Review Volume 29 Issue 2, October 1916Ontario Agricultural College · 1916
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
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- Telegraphy Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange…
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- Flag semaphore Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and -φέρω (-phero) '-bearer') is a semaphore system conveying information at a distance by means…
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- Signalman (rank) Signalman was a U.S. Navy rating for sailors that specialized in visual communication. See Signaller for more about the roles of Signalmen. A signal lamp…