semaphore blade
1Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… …
2Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …
3North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… …
4North American railway signaling — For the actual physical signals, see North American railroad signals. Standards for North American railway signaling in the United States are issued by the Association of American Railroads (AAR), which is a trade association of the railroads of… …
5Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …
6International Phonetic Alphabet — Not to be confused with NATO phonetic alphabet. IPA redirects here. For other uses, see IPA (disambiguation). For usage of IPA in Wikipedia, see Wikipedia:IPA or Wikipedia:IPA/Introduction International Phonetic Alphabet …
7Lebanon Mason Monroe Railroad — Infobox SG rail railroad name=Lebanon Mason Monroe Railroad marks= locale=Ohio start year=| end year=present hq city=Lebanon, Ohio The Lebanon Mason Monroe Railroad is located in historic downtown Lebanon, Ohio, conveniently located between… …
8Trench warfare — is a form of warfare where both combatants have fortified positions and fighting lines are static. Trench warfare arose when a revolution in firepower was not matched by similar advances in mobility. The result was a slow and grueling form of… …
9List of fictional companies — This is a list of notable fictional companies. Entries in this list must have received significant coverage in reliable sources that are independent of the subject.These are nonexistent companies created for dramatic or literary purposes in a… …
10Flagging dance — The art of flagging dance sometimes called flag dancing or rag spinning, but more commonly referred to as flagging, is the undulation, spinning and waving of flags in a rhythmic fashion to music. Pracitioners of this form of performance art and… …
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