Phase

Phase or phases may refer to:

In science

In physics

  • Phase (matter), a physically distinctive form of a substance, such as the solid, liquid, and gaseous states of ordinary matter—also referred to as a "macroscopic state"
    • Phase transition is the transformation of a thermodynamic system from one phase to another
  • Phase transition is the transformation of a thermodynamic system from one phase to another
  • Phase (separation science)
  • Mobile phase and Stationary phase in chromatography
  • Phase space, a mathematical space in which each possible state of a physical system is represented by a point - this point is also referred to as a "microscopic state"
  • Phase space formulation, a formulation of quantum mechanics in phase space
  • Phase (waves), the initial angle of a sinusoidal function at its origin
  • Polyphase system, a means of distributing alternating current electric power in multiple conducting wires with definite phase offsets
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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Phase

    Planetary phase

    Refers to the periods of time during which a planet's surface reflects different amounts of sunlight, revealing different portions of the planet's surface from the perspective of a given point in space.

    Inferior planets

    The two inferior planets, Mercury and Venus, which have orbits that are smaller than the Earth's, exhibit the full range of phases as does the Moon, when seen through a telescope. Their phases are "full" when they are at superior conjunction, on the far side of the Sun as seen from the Earth. (It is possible to see them at these times, since their orbits are not exactly in the plane of Earth's orbit, so they usually appear to pass slightly above or below the Sun in the sky. Seeing them from the Earth's surface is difficult, because of sunlight scattered in Earth's atmosphere, but observers in space can see them easily if direct sunlight is blocked from reaching the observer's eyes.) The planets' phases are "new" when they are at inferior conjunction, passing more or less between the Sun and the Earth. (Sometimes they appear to cross the solar disk, which is called a transit of the planet.) At intermediate points on their orbits, these planets exhibit the full range of crescent and gibbous phases.

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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Planetary_phase

    Phase (waves)

    Phase in sinusoidal functions or in waves has two different, but closely related, meanings. One is the initial angle of a sinusoidal function at its origin and is sometimes called phase offset or phase difference. Another usage is the fraction of the wave cycle that has elapsed relative to the origin.

    Formula

    The phase of an oscillation or wave refers to a sinusoidal function such as the following:

    where \scriptstyle A\,, \scriptstyle f\,, and \scriptstyle \varphi\, are constant parameters called the amplitude, frequency, and phase of the sinusoid. These functions are periodic with period \scriptstyle T = \frac{1}{f}\,, and they are identical except for a displacement of \scriptstyle \frac{T}{4}\, along the \scriptstyle t\, axis. The term phase can refer to several different things:

  • It can refer to a specified reference, such as \scriptstyle \cos( 2 \pi f t)\,, in which case we would say the phase of \scriptstyle x(t)\, is \scriptstyle \varphi\,, and the phase of \scriptstyle y(t)\, is \scriptstyle \varphi\,-\, \frac{\pi}{2}\,.
  • It can refer to \scriptstyle \varphi\,, in which case we would say \scriptstyle x(t)\, and \scriptstyle y(t)\, have the same phase but are relative to their own specific references.
  • In the context of communication waveforms, the time-variant angle \scriptstyle 2 \pi f t \,+\, \varphi, or its principal value, is referred to as instantaneous phase, often just phase.
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    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Phase_(waves)

    Podcasts:

    Phase

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    Phase

    by: Breaking Benjamin

    The light is dead in your eye
    So I'll keep living my life
    I only wanted to try
    To find my way back inside
    My imitation of life
    My litigation of life
    It's something easy to find
    Inside the shade of your eye
    Out of the ground I rise to grace
    Nobody knows it's just a phase
    Help me I'm out of breath again
    Nobody knows somewhere to make it go away
    Phase
    I find it hard to decide
    The way to make up your mind
    Your lips are better than mine
    So you can kiss this goodbye
    My imitation of life
    My litigation of life
    It's something easy to find
    Inside the shade of your eye
    It's just a phase
    And I can't wait
    Phase
    I know
    It's just a fucking phase
    It's just a fucking phase
    I'm drained time to fake and delay
    Watch the penny drop
    Let it go up and in drop
    Then watch it roll
    Let's all mourn till




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