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Film Speed
Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to describe the relationship between exposure and output image lightness in digital cameras. Relatively insensitive film, with a correspondingly lower speed index, requires more exposure to light to produce the same image density as a more sensitive film, and is thus commonly termed a ''slow film''. Highly sensitive films are correspondingly termed ''fast films''. In both digital and film photography, the reduction of exposure corresponding to use of higher sensitivities generally leads to reduced image quality (via coarser film grain or higher image noise of other types). In short, the higher the sensitivity, the grainier the image will be. Ultimately sensitivity is limited by the quantum efficiency of the film or sensor. Film speed measurement systems His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Phonetic Alphabet
The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic transcription, phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of speech sounds in written form.International Phonetic Association (IPA), ''Handbook''. The IPA is used by lexicography, lexicographers, foreign language students and teachers, linguistics, linguists, speech–language pathology, speech–language pathologists, singers, actors, constructed language creators, and translators. The IPA is designed to represent those qualities of speech that are part of wiktionary:lexical, lexical (and, to a limited extent, prosodic) sounds in oral language: phone (phonetics), phones, phonemes, Intonation (linguistics), intonation, and the separation of words and syllables. To represent additional qualities of speech—such as tooth wiktionary:gnash, gnashing, lisping, and sounds made wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aer Lingus
Aer Lingus ( ; an anglicisation of the Irish , meaning "air fleet" compare Welsh 'llynges awyr') is the flag carrier of Ireland. Founded by the Irish Government, it was privatised between 2006 and 2015 and it is now a wholly owned subsidiary of International Airlines Group (IAG). The airline's head office is on the grounds of Dublin Airport in Cloghran, County Dublin. Formed in 1936, Aer Lingus is a former member of the Oneworld airline alliance, which it left on 31 March 2007. After the takeover by IAG, it was expected that Aer Lingus would re-enter Oneworld, however, at a press briefing on 15 November 2017 the airline's then CEO Stephen Kavanagh stated that the airline has "no plans to join Oneworld". The airline has codeshares with Oneworld, Star Alliance and SkyTeam members, as well as interline agreements with Etihad Airways, JetBlue Airways and United Airlines. Aer Lingus has a hybrid business model, operating a mixed fare service on its European routes and full servi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Professional Engineer
Regulation and licensure in engineering is established by various jurisdictions of the world to encourage life, public welfare, safety, well-being, then environment and other interests of the general public and to define the licensure process through which an engineer becomes licensed to practice engineering and to provide engineering professional services and engineered product to the public. As with many other professions and activities, engineering is a restricted activity. Relatedly, jurisdictions that license according to particular engineering discipline define the boundaries of each discipline carefully so that practitioners understand what they are competent to do. A licensed engineer takes legal responsibility for engineering work, product or projects (typically via a seal or stamp on the relevant design documentation) as far as the local engineering legislation is concerned. Regulations require that only a licensed engineer can sign, seal or stamp technical documentation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Latin-script Digraphs
This is a list of digraphs used in various Latin alphabets. Capitalisation involves only the first letter (''ch'' becomes ''Ch'') unless otherwise stated (''ij'' becomes ''IJ''). Letters with diacritics are arranged in alphabetic order according to their base: is alphabetised with , not at the end of the alphabet, as it would be in Danish, Norwegian and Swedish. Substantially-modified letters, such as (a variant of ) and (based on ), are placed at the end. Apostrophe (capital ) is used in Bari for . (capital ) is used in Bari for . is used in the Wu MiniDict Romanisation for when it appears in a dark or ''yin'' tone. It is also often written as . is used in the Wu MiniDict Romanisation for dark is used in the Wu MiniDict Romanisation for dark is used in the Wu MiniDict Romanisation for dark (capital ) is used in Bari and Hausa (in Nigeria) for , but in Niger, Hausa is replaced with . A is used in Taa, where it represents the glottalized or cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enrique Iglesias
Enrique Miguel Iglesias Preysler (; (born 8 May 1975) is a Spanish singer and songwriter. He started his recording career in the mid-1990s on the Mexican indie label Fonovisa and became the bestselling Spanish-language act of the decade. By the turn of the millennium, he made a successful crossover into the mainstream English-language market. He signed a multi-album deal with Universal Music Group for US$68 million with Universal Music Latin Entertainment, Universal Music Latino to release his Spanish albums and Interscope Records to release English albums. In 2010, Iglesias parted with Interscope Records and signed with another Universal Music Group label, Republic Records, to release bilingual albums. In 2015, he parted ways with Universal Music Group after being there for over a decade. He signed with Sony Music Entertainment, Sony Music and his subsequent albums were to be released by Sony Music Latin in Spanish and RCA Records in English. Iglesias is one of the best- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ei (prefix Symbol)
A binary prefix is a unit prefix for multiples of units. It is most often used in data processing, data transmission, and digital information, principally in association with the bit and the byte, to indicate multiplication by a power of 2. As shown in the table to the right there are two sets of symbols for binary prefixes, one set established by International Electrotechnical Commission (IEC) and several other standards and trade organizations using two-letter symbols, e.g. ''Mi'' indicating with a second set established by semiconductor industry convention using one-letter symbols, e.g., ''M'' also indicating . In most contexts, industry uses the multipliers ''kilo'' (''k''), ''mega'' (''M''), ''giga'' (''G''), etc., in a manner consistent with their meaning in the International System of Units (SI), namely as powers of 1000. For example, a 500-gigabyte hard disk holds bytes, and a 1 Gbit/s (gigabit per second) Ethernet connection transfers data at nominal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-mid Front Unrounded Vowel
The open-mid front unrounded vowel, or low-mid front unrounded vowel, is a type of vowel sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is a Latinised variant of the Greek lowercase epsilon, . Features Occurrence See also * Index of phonetics articles A * Acoustic phonetics * Active articulator * Affricate * Airstream mechanism * Alexander John Ellis * Alexander Melville Bell * Alfred C. Gimson * Allophone * Alveolar approximant () * Alveolar click () * Alveolar consonant * Alveolar ejecti ... Notes References * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * External links * {{IPA navigation Open-mid vowels Front vowels Unrounded vowels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiple Chemical Sensitivity
Multiple chemical sensitivity (MCS), also known as idiopathic environmental intolerances (IEI), is an unrecognized and controversial diagnosis characterized by chronic symptoms attributed to exposure to low levels of commonly used chemicals. Symptoms are typically vague and non-specific. They may include fatigue, headaches, nausea, and dizziness. Although these symptoms can be debilitating, MCS is not recognized as an organic, chemical-caused illness by the World Health Organization, American Medical Association, nor any of several other professional medical organizations. Blinded clinical trials show that people with MCS react as often and as strongly to placebos as they do to chemical stimuli; the existence and severity of symptoms is seemingly related to the perception that a chemical stimulus is present.J. Das-Munshi, G. J. Rubin, S. Wessely, Multiple chemical sensitivities: A systematic review of provocation studies, ''Journal of Allergy and Clinical Immunology'', 118, pp.12 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Ionization
Electron ionization (EI, formerly known as electron impact ionization and electron bombardment ionization) is an ionization method in which energetic electrons interact with solid or gas phase atoms or molecules to produce ions. EI was one of the first ionization techniques developed for mass spectrometry. However, this method is still a popular ionization technique. This technique is considered a hard (high fragmentation) ionization method, since it uses highly energetic electrons to produce ions. This leads to extensive fragmentation, which can be helpful for structure determination of unknown compounds. EI is the most useful for organic compounds which have a molecular weight below 600. Also, several other thermally stable and volatile compounds in solid, liquid and gas states can be detected with the use of this technique when coupled with various separation methods. History Electron ionization was first described in 1918 by Canadian-American Physicist Arthur J. Dempste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ignition System
An ignition system generates a spark or heats an electrode to a high temperature to ignite a fuel-air mixture in spark ignition internal combustion engines, oil-fired and gas-fired boilers, rocket engines, etc. The widest application for spark ignition internal combustion engines is in petrol (gasoline) road vehicles such as cars and motorcycles. Compression ignition Diesel engines ignite the fuel-air mixture by the heat of compression and do not need a spark. They usually have glowplugs that preheat the combustion chamber to allow starting in cold weather. Other engines may use a flame, or a heated tube, for ignition. While this was common for very early engines it is now rare. The first electric spark ignition was probably Alessandro Volta's toy electric pistol from the 1780s. Siegfried Marcus patented his "Electrical igniting device for gas engines" on 7 October 1884. History Magneto systems The simplest form of spark ignition is that using a magneto. The engine spins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Electronic Intifada
''The Electronic Intifada'' (''EI'') is an online Chicago-based publication covering the Israeli–Palestinian conflict. It describes itself as Nonprofit organization, not-for-profit, Non-governmental organization, independent, and providing a Palestinian people, Palestinian perspective. History ''EI'' was founded in February 2001 by Ali Abunimah, an American citizen of Palestinian descent; Arjan El Fassed, human rights activist based in the Netherlands; Laurie King, an anthropologist and former coordinator of the International Campaign for Justice for the Victims of Sabra and Shatila massacre, Sabra and Shatila and the managing editor of the ''Journal of Palestine Studies'' in Washington; and Nigel Parry, currently an eclectic Internet consultant, writer and musician based in Pittsburgh. In April 2008, ''The Electronic Intifada'' published an article containing e-mails exchanged by members of the Committee for Accuracy in Middle East Reporting in America (CAMERA). The stated p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
