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Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
Methylphenidate, sold under the brand names Ritalin (/ˈrɪtəlɪn/ RIT-ə-lin) and Concerta (/kənˈsɜːrtə/ kən-SUR-tə) among others, is a potent central nervous system (CNS) stimulant used medically to treat attention deficit hyperactivity disorder (ADHD) and, to a lesser extent, narcolepsy. It is a primary medication for ADHD (e.g. in ...
Eurovision Dance Contest. American Song Contest. The Eurovision Song Contest ( French: Concours Eurovision de la chanson ), often known simply as Eurovision, is an international song competition organised annually by the European Broadcasting Union. Each participating country submits an original song to be performed live and transmitted to ...
- Name
- History
- Use in Writing Systems
- Related Characters
- Other Representations
- See Also
- External Links
English
For most English speakers, the name for the letter is pronounced as /eɪtʃ/ and spelled "aitch" or occasionally "eitch". The pronunciation /heɪtʃ/ and the associated spelling "haitch" is often considered to be h-adding and is considered non-standard in England. It is, however, a feature of Hiberno-English,and occurs sporadically in various other dialects. The perceived name of the letter affects the choice of indefinite article before initialisms beginning with H: for example "an H-bomb" or "a...
Other languages
1. French: ache /aʃ/ 2. German: ha /haː/ 3. Portuguese: agá [ɐˈɣa,aˈɡa] 4. Spanish: hache ['atʃe]
The original Semitic letter Heth most likely represented the voiceless pharyngeal fricative (ħ). The form of the letter probably stood for a fence or posts. The Greek Eta 'Η' in archaic Greek alphabets, before coming to represent a long vowel, /ɛː/, still represented a similar sound, the voiceless glottal fricative /h/. In this context, the letter ...
English
In English, ⟨h⟩ occurs as a single-letter grapheme (being either silent or representing the voiceless glottal fricative /h/ and in various digraphs: 1. ⟨ch⟩ representing /tʃ/, /ʃ/, /k/, or /x/ 2. ⟨gh⟩ being silent or representing /ɡ/, /k/, /p/, or /f/ 3. ⟨ph⟩ representing /f/ 4. ⟨rh⟩ representing /r/ 5. ⟨sh⟩ representing /ʃ/ 6. ⟨th⟩ representing /θ/ or /ð/ 7. ⟨wh⟩ representing /hw/ or /h/ The letter is silent in a syllable rime, as in ah, ohm, dahlia, cheetah, pooh-poohed, as well as in certa...
Other languages
In German, following a vowel, it often silently indicates that the vowel is long: In the word erhöhen ('heighten'), the second ⟨h⟩ is mute for most speakers outside of Switzerland. In 1901, a spelling reform eliminated the silent ⟨h⟩ in nearly all instances of ⟨th⟩ in native German words such as thun ('to do') or Thür ('door'). It has been left unchanged in words derived from Greek, such as Theater ('theater') and Thron ('throne'), which continue to be spelled with ⟨th⟩even after the last Ger...
Other systems
As a phonetic symbol in the International Phonetic Alphabet (IPA), it is used mainly for the so-called aspirations (fricative or trills), and variations of the plain letter are used to represent two sounds: the lowercase form ⟨h⟩ represents the voiceless glottal fricative, and the small capital form ⟨ʜ⟩ represents the voiceless epiglottal fricative (or trill). With a bar, minuscule ⟨ħ⟩ is used for a voiceless pharyngeal fricative. Specific to the IPA, a hooked ⟨ɦ⟩ is used for a voiced glottal...
Descendants and related characters in the Latin alphabet
1. H with diacritics: Ĥ ĥ Ȟ ȟ Ħ ħ Ḩ ḩ Ⱨ ⱨ ẖ ẖ Ḥ ḥ Ḣ ḣ Ḧ ḧ Ḫ ḫ ꞕ Ꜧ ꜧ 2. IPA-specific symbols related to H: ʜ ɦ ʰ ʱ ɥ ᶣ ɧ 3. Superscript IPA symbols related to H:𐞖 𐞕 4. ꟸ: Modifier letter capital H with stroke is used in VoQS to represent faucalized voice. 5. ᴴ : Modifier letter H is used in the Uralic Phonetic Alphabet 6. ₕ : Subscript small h was used in the Uralic Phonetic Alphabet prior to its formal standardization in 1902 7. ʰ : Modifier letter small h is used in Indo-European studies 8...
Ancestors, siblings, and descendants in other alphabets
1. 𐤇 : Semitic letter Heth, from which the following symbols derive 1.1. Η η : Greek letter Eta, from which the following symbols derive 1.1.1. 𐌇 : Old Italic H, the ancestor of modern Latin H 1.1.1.1. ᚺ, ᚻ : Runic letter haglaz, which is probably a descendant of Old Italic H 1.1.2. Һ һ : Cyrillic letter Shha, which derives from Latin H 1.1.3. И и : Cyrillic letter И, which derives from the Greek letter Eta 1.1.4. 𐌷 : Gothicletter haal 1.1.5. Armenian letter ho (Հ)[citation needed]
Derived signs, symbols, and abbreviations
1. h : Planck constant 2. ℏ : reduced Planck constant 3. H {\displaystyle \mathbb {H} } : Blackboard bold capital H used in quaternionnotation
Computing
1and all encodings based on ASCII, including the DOS, Windows, ISO-8859, and Macintosh families of encodings.
The dictionary definition of Hat WiktionaryThe dictionary definition of hat WiktionaryPortugal, officially the Portuguese Republic, is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira.It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in the north and east, the Portugal-Spain border constitutes ...
Charles Dickens's birthplace, 393 Commercial Road, Portsmouth 2 Ordnance Terrace, Chatham, Dickens's home 1817 – May 1821 Charles Dickens was born on 7 February 1812 at 1 Mile End Terrace (now 393 Commercial Road), Landport in Portsea Island (), Hampshire, the second of eight children of Elizabeth Dickens (née Barrow; 1789–1863) and John Dickens (1785–1851).
7-Eleven, Inc.[2] is an American convenience store chain, headquartered in Irving, Texas and owned by Japanese company Seven & I Holdings through Seven-Eleven Japan Co., Ltd.[3] The chain was founded in 1927 as an ice house storefront in Dallas. It was named Tote'm Stores between 1928 and 1946. After Ito-Yokado, a Japanese supermarket chain ...
