# Tag Info

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An elementary particle is not like a billiard ball at a very small scale. You yourself state i know sometimes it behaviors like a wave, but it sometimes can be seen as a particle. This statement does not apply to macroscopic particles, it applies to microscopic quantum mechanical entities when the dimensions become equal or smaller than a billionth ...

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It's a very good question. The electron is described by a wave field which resembles a charge distribution, so it is natural to wonder why it doesn't repel itself and spread out all over. However, the wave is not a classical wave but is quantized, i.e. the energy in a given vibration mode has to come in discrete bundles. One can count how many excitations ...

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How is it possible to see/detect a probability density wave ? It isn't possible. The image is a visualization of an interference pattern from which the nodal structure of the orbital can be inferred. From a Physics World article: In the new work, Aneta Stodolna, of the FOM Institute for Atomic and Molecular Physics in the Netherlands, along with ...

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The title of this question refers to the emission of light from an incandescent light bulb, and then the body of the question asks for Planck-scale details of the physics happening there. Well, that would be a lot of work to answer. Suppose it's a tungsten filament. Then there's a molecular lattice of tungsten atoms, i.e. a lattice of nuclei surrounded by ...

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When physicists perform particle collisions, they do not execute them one collision at a time. Rather, they perform millions of collisions within very short time frames and they use state of the art computers to analyze and decipher the copious amounts of data they receive. That being said, to isolate a particle such as a proton, it is as simple as ...

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A nanoscope in the sense you're talking about would be physically impossible, because things which are smaller than the wavelength of light don't reflect light. They do scatter light, but that's a different process which doesn't form a coherent image. Visible light has wavelengths between about 400 and 700 nanometers, so anything smaller than that - ...

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It's really not clear what hypothetical limits you're imposing. I take your question to mean that in the process of baryogenesis the various baryons like protons and neutrons highly favored up quarks (lots more protons than neutrons). Remember, quarks are subject to confinement so other than a quark-gluon plasma, quarks are confined to baryons. Since ...

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In contrast with the previous incorrect answers that I hadn't noticed, there isn't any ambiguity or confusion about the Bose-Einstein or Fermi-Dirac statistics for composite systems such as atoms. A particle – elementary or composite particles – that contains an even number of elementary (or other) fermions is a boson; if it contains an odd number, it is a ...

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As far as resolution goes, right now the best in practice are high resolution transmission electron microscopy (which involves firing high energy electrons), high resolution scanning force microscopy (which involves a very sharp tip vibrating above a surface), and the classic scanning tunneling microscopy (which involves conduction through a very narrow ...

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If you're asking whether we can measure the effect on atomic structure of gravitational forces between the nucleus and the electrons, then the answer is that not only have we never measured such effects but it's unlikely we'll ever be able to measure them as they would be many orders of magnitude below the electrostatic forces that hold the atom together. ...

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However where did the electron get its energy from in the first place(during the creation of the universe"Big bang"). All energy, and remember energy and mass are related by E=m*c^2, that exists in the universe existed after the first minutes of the Big Bang . For t=0 plus an interval after it where gravitational forces predominate, i.e the realm of ...

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They are exactly the same, with the different notations arising in different contexts. You could start with a bunch of helium gas and heat it up or shine UV light on it to turn it into a plasma, and then you'd probably say you have $\mathrm{He}^{2+}$ (or $\mathrm{He}\ \mathrm{III}$ if you are an astronomer). The symbol $\alpha$ is more often reserved for ...

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Specific charge is indeed the ratio of charge and mass, but since an atom is made up of neutrals and charged particles, you need to account for them. Thus, you'd use $$\eta=\frac{q\left(n_p-n_e\right)}{n_pm_p + n_nm_n + n_em_e}$$ where $\eta$ is the specific charge (my own variable, don't believe it's standard), $m_i$ is the mass of $i$ (neutrons, ...

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For example, how many quarks are in my brain(easy to find out once you know how many atoms there are)? Actually it's easier to count how many atoms are in your brain than how many quarks are in your brain. As you may know there are three quarks per nucleon in your brain... but this is not the whole truth. The force the binds quarks together creates a ...

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Well, in the case of hydrogen H1, the nucleus (which is nothing more nor less than a proton) can certainly be aligned by a static magnetic field -- said alignment being the basis of proton magnetic resonance, and, not coincidentally, most clinical MRI imaging. I won't venture beyond hydrogen, but that's one example at least.

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Conduction of charge has to do with the availability of electrons in the element to conduct charge by physically moving from one place inside the crystal structure of the material to another (that's what current is, movement of charge). Group I-III and transition elements conduct electricity. Moreover, they are solids so there is a high density of atoms per ...

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i know sometimes it behaviors like a wave, but it sometimes can be seen as a particle. Firstly, the electron has a wavefunction $\Psi$, which is a wave, but when it looks like a single point (particle) when it is observed because this wave is actually just the probability amplitude of finding the electron at a certain point, with the probability ...

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This is confusing enough to make me want to scribble down a few equations. This is a creation operator for deuterium: D_{\rho}^{\dagger}\left(k\right)=\sum_{\alpha\beta\gamma}\int\mathrm{d}^{3}l\mathrm{d}^{3}p\mathrm{d}^{3}q\delta^{\left(3\right)}\left(l+p+q-k\right)\ ...

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Actually, there are two different and inequivalent definitions of bosons. On the one hand, they are often defined as particles with integer spin, on the other hand, sometimes they are defined as particles for which only symmetric states exist in nature (see, e.g., Dirac's "Principles of Quantum Mechanics"). Composite particles, such as hydrogen atoms, can be ...

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You have a lot of questions here, and they show you really need to read up on some basic physics, but here goes with some simple answers: Where did the electron get its energy from in the first place? What energy do you mean? Why doesn't everything fall apart when we sit on a chair or grab a pencil,why wont the electrons fall from trajectory and get caught ...

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