17th Parallel

(noun)

The provisional military demarcation line between North and South Vietnam established by the Geneva Accords of 1954. The demarcation line ran approximately along the Ben Hai River in Quang Tri Province to the village of Bo Ho Su and from there due west to the Laos-Vietnam border.

Related Terms

  • domino theory
  • First Indochina War
  • Việt Minh
  • August Revolution

Examples of 17th Parallel in the following topics:

  • Applications of the Parabola

    • A parabola is a conic section created from the intersection of a right circular conical surface and a plane parallel to a generating straight line of that surface.
    • The parabolic trajectory of projectiles was discovered experimentally in the 17th century by Galileo, who performed experiments with balls rolling on inclined planes.
    • Conversely, a parabolic reflector can collimate light from a point source at the focus into a parallel beam.
    • This principle was applied to telescopes in the 17th century.
  • Relativistic Addition of Velocities

    • As Galileo Galilei observed in 17th century, if a ship is moving relative to the shore at velocity $v$, and a fly is moving with velocity $u$ as measured on the ship, calculating the velocity of the fly as measured on the shore is what is meant by the addition of the velocities $v$ and $u$.
    • Using a Michelson interferometer, Hyppolite Fizeau measured the speed of light in a fluid moving parallel to the light in 1851 .
    • A light ray emanating from the source S' is reflected by a beam splitter G and is collimated into a parallel beam by lens L.
  • Combinations of Capacitors: Series and Parallel

    • Like any other form of electrical circuitry device, capacitors can be used in series and/or in parallel within circuits.
    • It is possible for a circuit to contain capacitors that are both in series and in parallel.
    • However, these are both in parallel with C3.
    • This image depicts capacitors C1, C2, and so on until Cn in parallel.
    • Calculate the total capacitance for the capacitors connected in series and in parallel
  • Resistors in Parallel

    • Resistors in a circuit can be connected in series or in parallel.
    • Therefore, for every circuit with $n$ number or resistors connected in parallel,
    • $R_{n \;(parallel)} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} ... + \frac{1}{R_n}.$
    • Three resistors connected in parallel to a battery and the equivalent single or parallel resistance.
    • Calculate the total resistance in the circuit with resistors connected in parallel
  • Structural Parallelism Within a Sentence

    • But what is parallelism?
    • Parallel: We can pay with a mark, a yen, a buck, or a pound.
    • Parallel: This is a time not for words but for action.
    • In some instances, you must figure out which parts of the sentence are parallel in meaning before making them parallel in structure.
    • The title sentence is a non-parallel statement.
  • Surrender at Yorktown

    • Soon after, the allies built their first parallel (earthworks to support a siege) and began the bombardment of British forces.
    • Following these successes, the allies were able to complete their second parallel.
    • With the American artillery closing in, the British situation began to deteriorate rapidly, and Cornwallis asked for terms of capitulation on the 17th.
  • Combination Circuits

    • A combination circuit can be broken up into similar parts that are either series or parallel.
    • In that case, wire resistance is in series with other resistances that are in parallel.
    • In the initial image, the two circled sections show resistors that are in parallel.
    • The next step shows that the circled two resistors are in parallel.
    • This combination of seven resistors has both series and parallel parts.
  • How Skeletal Muscles Are Named

    • The anatomical arrangement of skeletal muscle fascicles can be described as parallel, convergent, pennate, or sphincter.
    • Parallel muscles are characterized by fascicles that run parallel to one another, and contraction of these muscle groups acts as an extension of the contraction of a single muscle fiber.
    • Parallel muscles can be divided into fusiform and non-fusiform types based on their shape.
    • The biceps brachii is an example of a  fusiform parallel muscle, and is responsible for flexing the forearm.
    • Fascicles pull on the tendon at an angle, thus not moving as far at the parallel muscles during a contraction.
  • Repetition and Parallelism

    • Repetition and parallelism can add clarity and dramatic punch to your speech.
    • Parallelism is an especially effective technique to provide structure, order, and balance in your speech, in addition to clarifying your argument.
    • Parallelism works the same way but without rote repetition of words or ideas and instead constructs them from similar examples.
    • Parallelism is a very effective way to break up your use of repetition by laying out many different ways of expressing the same thought or idea.
    • See below how parallelism was used in these two speakers:
  • Parallel and Perpendicular Lines

    • Two lines in a plane that do not intersect or touch at a point are called parallel lines.
    • The parallel symbol is $\parallel$.
    • For example, given two lines: $f(x)=m_{1}x+b_{1}$and $g(x)=m_{2}x+b_{2}$, writing $f(x)$ $\parallel$ $g(x)$ states that the two lines are parallel to each other.  
    • In 2D, two lines are parallel if they have the same slope.
    • Given two parallel lines $f(x)$ and $g(x)$, the following is true:
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