science

Vi

Vi is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Vi rather than just read about it. In short: vi most commonly refers to: vi (text editor), a screen-oriented text editor software application VI, Vi, vi, V.I., or v.i. may also refer to: Arts, entertainment, and media Characters Vi (League of Legends), a character from the League of Legends video game franchise Vi (Buffy the Vampire Slayer), a minor character in the American TV series Buffy the Vampire Slayer Violet Parr, a character of Walt Disney Pictures an…

Key takeaways

Vi belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Vi to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Vi from memory before moving on to harder problems.

Reference excerpt

vi most commonly refers to:

vi (text editor), a screen-oriented text editor software application VI, Vi, vi, V.I., or v.i. may also refer to:

Arts, entertainment, and media

Characters Vi (League of Legends), a character from the League of Legends video game franchise Vi (Buffy the Vampire Slayer), a minor character in the American TV series Buffy the Vampire Slayer Violet Parr, a character of Walt Disney Pictures animated film The Incredibles Vi Praskins, a major character in the 1950s American TV series Private Secretary

Music Submediant chord, symbolized "VI" or "vi" VI (Circle Jerks album), 1987 VI (The Danse Society album), 2015 VI (Onslaught album), 2013 VI (You Me at Six album), 2018 Ice-T VI: Return of the Real, an album by Ice-T, 1996 VI Music, a Puerto Rican record label

Magazines Voetbal International, a prominent Dutch football (soccer) magazine Vi (magazine), a Swedish lifestyle magazine

Businesses and organizations Vodafone Idea, branded as "Vi", a telecom operator based in India Vi Senior Living, a provider of retirement communities in the United States Victoria Institution, a secondary school in Kuala Lumpur, Malaysia Volga-Dnepr (IATA airline code VI), an airline based in Ulyanovsk, Russia

People Violet (given name), sometimes shortened to Vi Vi Anand, Indian film director and screenwriter Vi Burnside (1915–1964), American jazz musician Vi Daley (born 1943), American politician Vi Farrell (1913–1989), English-born New Zealand cricketer Vi Gale (1917–2007), Swedish-born American poet and publisher Vi Hart (born 1988), "recreational mathemusician" known for creating mathematical YouTube videos Vi Hilbert (1918–2008), Native American tribal elder Vi Huyền Đắc (1899–1976), Vietnamese playwright Vi Jones (born 1998), American football player Vi Jordan (1913–1982), Australian politician, second woman elected to the Queensland Legislative Assembly Vi June (1932–2020), American politician Vi Kaley (1878–1967), British actress Vi Keeland, American writer Vi Khi Nao, Vietnamese writer Vi Lloyd (1923–2013), Australian politician Vi Lyles (born 1952), American politician Vi Redd (1928–2022), American jazz musician, vocalist and educator Vi Simpson (born 1946), American politician Vi Subversa (1935–2016), British musician Seungri or V.I. (born 1990), member of South Korean pop band Big Bang Victoria Imperatrix (Latin for: "Victoria the Empress"), referring to Queen Victoria

Places Vi, Sweden Vi, a village in Shkodër County, Albania Victoria Island, Lagos, an area of Lagos, Nigeria British Virgin Islands, by FIPS country code United States Virgin Islands, in many code systems including US postal code

Science and technology .vi, the country code top-level domain (ccTLD) for the United States Virgin Islands Vapor intrusion, a process by which chemicals in soil or groundwater migrate to indoor air above a contaminated site Vinyl group, a chemical group with the formula H-C=CH2 Virtual instrument or software synthesizer, a computer program or plug-in that generates digital audio Virtual instrumentation, customized software measurement systems that implement functions of an instrument by computer, sensors and actuators Viscosity index, a measure of how viscosity of a liquid changes with temperature Vulnerability index, a measure of the exposure of a population to some hazard Vi, an artificial intelligence personal trainer developed by LifeBEAM Vi, from virginium, a rejected proposed name and abbreviation for the element francium

Other uses VI, 6 in Roman numerals vide infra, Latin for "see below" Visual impairment Vietnamese language, by ISO 639-1 code

See also V1 (disambiguation) (number "1" as opposed to letter "i")

Worked examples

Example 1 — a first encounter with Vi

Start with the simplest possible case. Write down what Vi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Vi before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Vi ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Vi

In research: Vi appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Vi in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Vi is common in secondary-school and first-year university syllabi. It links to neighbouring topics Disambiguation pages, Hypocorisms, Place name disambiguation pages, so understanding it makes those chapters shorter.
In everyday life: Look for Vi outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Vi in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Vi means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Vi out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Vi in simple terms?

vi most commonly refers to: vi (text editor), a screen-oriented text editor software application VI, Vi, vi, V.I., or v.i. may also refer to: Arts, entertainment, and media Characters Vi (League of Legends), a character from the League of Legends video game franchise Vi (Buffy the Vampire Slayer)…

Why does Vi matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Vi?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Vi.

Vi