Questions tagged [wavelength]
The wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and the inverse of the spatial frequency or wavenumber. Determined by considering the distance between consecutive corresponding points of the same phase, such as crests. Use for wavenumber, wavelength, frequency.
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Understanding the relationship between wavelength and constructive interference distance in Cox and Forshaw's "clock" model
In Brian Cox and Jeff Forshaw's book The Quantum Universe, they introduce a pedagogical model where quantum particles are described by an array of "clocks" at each point in space. The length ...
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Where does the notion of the wavelength of light come from? [closed]
We have all heard the phrase that light is an electromagnetic wave and so it has a wavelength, but this is obviously nonsense.
First of all, it is not at all clear what is "waving" and why ...
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How many phase cycles do two EM waves of different wavelengths complete in 1 second in vacuum ($c = 299792$ km/s)? [closed]
All electromagnetic waves propagate in vacuum at the same speed, c = 299792 km/s.
Consider two examples emitted at the same time from the same point in vacuum:
Visible light near the middle of the ...
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How does a microwave show its content while blocking the actual waves? [duplicate]
I'm reading an article about microwave ovens. The article states that microvaves have a frequency of $2.45$GHz, which would correspond with a wavelength of about $12$ centimeter.
Let's assume this is ...
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Is the set of electromagnetic wavelengths dense? [closed]
Let's consider the set of all values
wavelength of electromagnetic photons
can reach: Λ.
Λ is clearly a subset of ℝ.
Is Λ dense in ℝ? ( See: dense definition ).
In other words,
can we find ...
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Zeeman effect with Lummer Gehrcke plate lab experiment question (energy shift versus wavelength shift)
I'm trying to prove the following:
$$\Delta f = \frac{c}{\lambda^2} \Delta \lambda.$$
For the moment I think it's ok to ignore the context, but for those interested it is in regards to observing the ...
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Difference between graphing spectral irradiance by frequency versus wavelength [duplicate]
This web page includes two graphs, one of which shows the sun's spectral irradiance as a function of wavelength and the other as a function of frequency. On the first graph, the spectrum "peaks&...
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Wavelength and Energy relation [closed]
Wavelength $\lambda$ formula:
$$\tag1\lambda=\frac h{mv}$$
Put here value of $h$ as
$$\tag2h=\frac Ef$$
Then formula becomes:
$$\tag3\lambda=\frac E{fmv}$$
In this formula, wavelength is directly ...
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Cauchy formula for refractive index [duplicate]
The Cauchy formula
$$n=A+\frac{B}{\lambda^2}+\cdots$$
is only taught till first 2 (or 3) terms.
Why is it so and what are the next few terms?
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I'm finding that the de Broglie wavelength of a macroscopic object would be smaller than a Planck length. Is my math wrong? [closed]
For example, say I, approx. $\ 100\ kg$, was moving at $10\ m/s$. My momentum would therefore be $1000\ kg\cdot m/s$. Given the planck constant of $6.62607015\cdot 10^{-34}\ kg\cdot m^2/s$, it would ...
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How do I make sense of the wavelength for the second harmonic?
This is probably a very elementary question, but for the second harmonic, we have $L=n\lambda/2=\lambda$.
But how does this make sense?
$\lambda$ is the distance between the two ends of the string. ...
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Additional, non-integer harmonics in Fourier transform of a wave
Suppose we have a periodic wave, for example a note played on an instrument.
We assume ideal conditions, in the sense that the wave is periodic with frequency $\omega_0$.
We want to know the relative ...
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How can the EverTune electric guitar bridge possibly maintain intonation?
There is a (relatively) recent invention in the guitar world known as the EvertTune bridge. This system has many aficionados: people have it in their instruments and swear by it. This mechanical ...
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Why do we name and separate invisible bands even though the whole EM spectrum is continuous?
I know that the electromagnetic spectrum is fundamentally continuous—ranging from radio waves and microwaves, through infrared, visible light, ultraviolet, X‑rays, to gamma rays—without sharp ...
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Confusion about Displacement vs Time Graph for a Wave
How does the displacement of a single point over a period of time (displacement vs time graph) on either longitudinal or transverse wave determine the features of the wave (such as amplitude,...
