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- Dictionaryphase/feɪz/
noun
- 1. a distinct period or stage in a series of events or a process of change or development: "the final phases of the war" Similar
- 2. each of the aspects of the moon or a planet, according to the amount of its illumination, especially the new moon, the first quarter, the full moon, and the last quarter. Similar
verb
- 1. carry out (something) in gradual stages: "the work is being phased over a number of years"
- 2. adjust the phase of (something), especially so as to synchronize it with something else: "about 70% of the reflections were phased by this method"
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Aug 12, 2018 · The phase of the wave is the quantity inside the brackets of the sin-function, and it is an angle measured either in degrees or radians. $\phi= (\frac {2\pi} {\lambda}x-\frac {2\pi} {T}t)$. The phase of a wave is not a fixed quantity. Its value depends on what point along the x-axis and at what time you observe the wave.
We say that two functions of the same frequency are "out of phase" if this above condition is not met. We can specify how much they are out of phase by using the phase angle ϕ ϕ. If two functions of the same frequency are off by a phase angle of ωt 2 ω t 2 then the crest of one wave will always match up with the trough of another.
May 24, 2015 · The phase space is just the cotangent bundle to the configuration space. The bridge between the two is the natural symplectic structure, and the relation between the Lagrangian and Hamiltonian is a Legendre transform.
Feb 8, 2017 · The phase constant tells how much a signal is shifted along the x-axis. A phase constant of ϕ means that each value of the signal happens ϕ amount of time earlier. If the signal has a beginning, then a phase constant of ϕ means the signal occurs that much sooner.
Feb 22, 2017 · I always feel unsure about the definitions of phase and phase transition. First, let's discuss in Laudau's paradigm. For example, some people say that phase is classified by symmetry. Some people say
The path difference is the difference between the distances travelled by two waves meeting at a point. Given the path difference, how does one calculate the phase difference?
Jul 21, 2022 · I believe that "in phase" means that the phase difference of the two waves is zero (and out-of-phase means that this difference is equal to pi). But more general if the phase difference of two waves remains the same during a time that is called "Coherence time", the fields are coherent during that time.
Aug 3, 2023 · For progressive waves we define phase difference as difference in phase angle between two points. However for standing waves, the phase difference becomes something else. We say two points are in phase when they travel in the same direction and with the same amplitude. So why have the definitions changed here?
Feb 11, 2018 · In thermodynamics when we talk about phase we mean the phases like liquid, solid and gas. In chemistry one can have phases which refer to the crystal structure of materials for example in perovskites, the orthorhombic and tetragonal phases are most common non-cubic variants. Mixed throughout, as inn general language, we sometimes talk of a ...
Nov 14, 2021 · A high pressure in a given volume can occur with a low density and a high temperature, or with a large density and a low temperature. but they are conditions that tend to different phases... They aren't? You are suppossed to know the amount of susbtance, then T is determined by the equation of state, so a point in the PV diagram contains no ...
