What is Nucleus: Definition and 420 Discussions

nuCLEus is a proposed mixed-used development complex planned for the Gateway District of downtown Cleveland, Ohio, United States. The project won unanimous approval from the Cleveland Planning Commission in November 2014, and recently received schematic design approval from the City of Cleveland in March 2019 after a thoughtful redesign to fit the city's growing population and needs in downtown Cleveland.Robert L. Stark of Cleveland-based Stark Enterprises is the lead developer on the nuCLEus.
The $300M mixed-use project will encompass approximately two million square feet in the heart of the city at the intersection between East Fourth Street, Prospect Avenue and Huron Road, connecting many of the venues in the Central Business District.
nuCLEus will serve as a mixed-use, vertically integrated space with a mix of Class A office space, retail, restaurants and residential living divided between two distinct, 24 floor towers.

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  1. dexterdev

    Can we give an analogy for nucleus to sun and electrons to planets

    Can we give an analogy for nucleus to sun and electrons to planets...... Hi all, Can we give an analogy for nucleus to sun and electrons to planets...... like this in several galaxies... and galaxies together form some other material in larger scale. Also can we say wave nature of...
  2. P

    Electron collision with nucleus

    I am abilogist who recently have to describe medical imaging...In this while explaining Bremsstahlung radiation, I am faced with a question. When a charged partcile like electron approaches another charged particle like nuclues in this case, does it undergo acceleartion or deceleration? since...
  3. LarryS

    Electrons Entangled with Nucleus?

    Consider the simplest of all possible atoms: A hydrogen atom with only a proton as its nucleus. According to QFT, the electron is constantly exchanging photons with the proton. So, are the electron and proton entangled? Thanks in advance.
  4. Q

    P orbital lobes tangent to plane of nucleus

    I read the following on a page about atomic orbitals (p and d orbitals in particular) which seem 2 me like 3d lemniscates (figures 8 or ∞ rotated about an axis of symmetry to form tear drop pairs or toruses. http://www.chemguide.co.uk/atoms/properties/atomorbs.html Taking chemistry further...
  5. C

    Does the Nucleus Have a Wave Function?

    I was wondering why is the nucleus willing to confine itself in one place while the electrons are free to appear anywhere around the nucleus within the orbital. Electrons have this wave function, is there one for the nucleus?
  6. N

    Electrons in Nucleus: What Prevents Collision?

    What prevents the electrons from hitting the nucleus? Shouldn't the proton attract it and destroy the atom?
  7. I

    Why are neutrons in the nucleus stable vs their free counterparts?

    If the free neutron decays in only 15 minutes, why are neutrons in the nucleus attached to protons stable? This has always bewildered me. Just a side question, are 'tetraneutrons' stable or even possible?
  8. C

    Protons in Atom's Nucleus: A, C, or None?

    The number of protons in the nucleus of an electrically neutral atom is equal to: a) the number of electrons in the nucleus. b) the number of neutrons surrounding the nucleus. c)the number of electrons surrounding the nucleus. d)the number of neutrons in the nucleus. e)None of the...
  9. R

    How can a nucleus make a sound?

    This is from Paul Davies the Last Three Minutes I thought sound is due to particles moving up and down which activate hairs inside our ear which our immaterial, nonphysical, unconscious mind converts into meaning and communicates that meaning to the conscious mind. I don't see how the...
  10. G

    Can the geometry of an iron nucleus explain its unique properties?

    I have heard that iron is quite special in that no matter how much temp. and pressure is present, it will not change to a molecule of greater atomic number. I keep wondering about the geometry of the arrangement of protons and neutrons in the iron atoms' nucleus that could account for this...
  11. 4

    Mass Defect to calculate the stability of a nucleus

    This is just a simple conceptual question. When we try to calculate a nuclear binding energy of some nucleus, we get the mass defect(del M) and find the binding energy by using (del M)c^2 right? Well, what I do not understand is this. For instance, let's take a formation of a...
  12. S

    How Electrons Penetrate Nucleus w/o Capture

    http://en.wikipedia.org/wiki/Radioac...ng_decay_rates "...which are subject to electron capture in 7Be because (like all s atomic orbitals in all atoms) they naturally penetrate into the nucleus." How can the s orbitals penetrate the nucleus without being captured? And do they mean all...
  13. M

    Acceleration of an electron held at 1m from the nucleus of an Uranium atom.

    Homework Statement An electron is held fixed at a distance of 1 m from the nucleus of a uranium atom (Z = 92). If the electron is then released, what is the magnitude of its initial acceleration? Homework Equations I am not sure which kinematic equation that I should use...
  14. 1

    Fission: how far from the center of a U-235 nucleus can a neutron strike

    and successfully fission. let's say a neutron approaches the spherical nucleus from a particular distance. its possible route to the nucleus has a conical shape. how far from the center can it strike and still fission? If it just nicks it just inside a tangent line will it fission?
  15. N

    Understanding Nucleus Decay: Nitrogen-14 to Carbon-11 Transformation Explained

    A proton collides with a nucleus of nitrogen-14 (atomic number 7). This collision produces a nucleus of carbon-11 (atomic number 6) and what else? My attempt: 14/7N + proton -----> 11/6C + alpha particle? I know it cannot be gamma decay, but I'm not sure if it's alpha or beta decay and what...
  16. M

    Energy released in the fission of one uranium-235 nucleus? (extra neutron)

    1. How much energy is released during the fission of one uranium-235 nucleus? 2. e=mc2 lol :smile: 3. I thought of putting them together but then how to separate them? 1.67495×10-27+3.903 05×10–25×c2=1.7539207313048996244767495×10-7 By the way, the answer is 4.73×10-11
  17. M

    Why Don't Electrons Spin Into the Center of the Nucleus?

    I was doing some reasearch on electrons, and I found that they have both particle and wave like characteristics. Is this the reason why? because they travel in waves around a nucleus? or am I missing a piece of the puzzel? :smile: Cheers
  18. S

    Momentum: Nucleus decays into 3

    Can someone please help with this one? I'm not sure what to do here. I broke momentum for particles one and two into components (found m1v1cosθ1 + m2v2cosθ2 and m1v1sinθ1 + m2v2sinθ2) but this is not correct and I really don't know what to do. Please help! A certain nucleus at rest...
  19. L

    Classical Electron: Will It "Fall" Into the Nucleus?

    In the classical view of the electron, would the electron "fall" into the nucleus? I'm not asking why the electron doesn't fall into the nucleus. I know this is explained by quantum mechanics. But in class the other day, my professor said that treating the electron as a classical particle...
  20. Y

    Is whole Carbon 13 atom (not just the nucleus) a fermion or boson?

    This ought to be simple, I think. But I haven't found a consistent way to think about things yet. Is it as simple as adding up all the spins of the elementary particles in the particle and checking whether the total has inter or half-integer spin? Homework Statement State whether the...
  21. B

    External lateral parabrachial nucleus: where it is located?

    Hi,I have an assignment for school where I am supposed to draw a diagram of the brain and label some areas. However, I am having trouble locating the external lateral parabrachial nucleus (PBel) as well as the Dorsal lateral parabrachial (PBdl) (which I assume are in the same general area). Is...
  22. B

    Bremstrahlung cross-section for nucleus and electrons

    Homework Statement Explain what is meant by Bremsstrahlung. Which cross-section is higher for atoms with Z>1: Bremsstrahlung on the atomic nucleus or on the atomic electrons? Why? The Attempt at a Solution I explained what Bremsstrahlung was just by copying from the notes. I am not...
  23. D

    Discrete protons and neutrons in nucleus

    What if: There are only discrete protons in the atomic nucleus combined with electrons (not the orbital ones) being shared,in some random manner, leaving a net positive charge. The two particles only become discrete with the known different characteristics when the atom is "smashed" and a...
  24. A

    Hi,When a nucleus does [itex]\beta[/itex]-decay[tex]_Z^A X

    Hi, When a nucleus does \beta-decay _Z^A X \rightarrow _{Z+1}^A Y + e^- + \overline{\nu} The daughter nucleus has one more charge than the mother nucleus, so it will take an electron into its cloud. Why is this electron's contribution to the Q-value said to cancel that from the emitted...
  25. B

    Energy of particles in the nucleus

    [b]1. Suppose that the potential seen by a neutron in a nucleus can be represented by a square well of width 10^(-12)cm with very high walls. What is minimum KE of the neutron in this potential ? [b]2. K.E = (1/2)mv^2 [b]3. Its an isolated system, so it drops into its lowest energy state and the...
  26. A

    What causes attraction of electrons to nucleus?

    What causes the attraction between electrons and protons in the nucleus? I've always assumed the attraction and worked from there, but I was curious if anybody knows what the root cause of this attraction is.
  27. G

    Minimum energy of an electron trapped in a nucleus

    We were asked to estimate the minimum kinetic energy of an electron trapped within a nucleus having diameter d . My solution was this: find the momentum of the electron (via de Broglie relation) and use a very standard kinetic energy formula, like this (assuming minimum energy state has a...
  28. O

    Energy levels of nucleus in emitting radiation in MRI

    Hi experts please explain energy levels of nucleus in emitting radiation in MRI
  29. W

    Understanding the Nucleus Shell Model

    hi please explain what is nucleus shell model?
  30. C

    Wt is the recoil of the nucleus?

    Wt is meant by the recoil of the nucleus?
  31. P

    Why an electron never falls into a nucleus?

    So, I know from having taken some QM that solving the Schrodinger equation for an electron with a central potential gives you the probability distribution for the electron, and the different energy levels correspond to different atomic orbitals. That's fine from a mathematical perspective...
  32. C

    Can Nuclei Emit Visible Light and Be Manipulated to Change Energy States?

    The nucleus of an atom has discrete energy states. And most of the time it emits gamma rays and x-rays from the nucleus. If I pack enough atoms into a solid or some other configuration could I get the nucleus to emit visible light. Is there any way I could manipulate the states to get them to...
  33. D

    Kinetic energy of daughter nucleus and alpha particle from alpha decay

    Homework Statement In \alpha decay a nucleus X at rest decays to a daughter nucleus Y and an \alpha particle. Conservation of momentum and kinetic energy gives: M_{\alpha}v_{\alpha}+M_{Y}v_{Y}=0 \frac{1}{2}M_{\alpha}v_{\alpha}^{2}+\frac{1}{2}M_{Y}v_{Y}^{2}=Q Where the Q value is the...
  34. Y

    Why Doesn't Nucleus Become Unstable Due to Repulsion?

    the nucleus has protons arranged in a small volume then why doesn't the nucleus become unstable due to repulsion?
  35. M

    Conceptual question - radioactive nucleus stability

    Homework Statement A ^{238}_{92} U nucleus can catch a neutron with small kinetical energy. Then we'll get a ^{239}_{92} U nucleus. This nucleus has too many neutrons compared to the number of protons to be stable. How can the nucleus achieve a better balance between neutrons and protons...
  36. I

    Can an electron collide with the nucleus of an atom?

    Can an electron (from outside the atom) collide with the nucleus of an atom, and does this happen at normal energy levels? What usually happens when it does? If it doesn't happen is it because the electrons of the atom repel the incoming electron with their charge. Finally same question, but...
  37. K

    Does light interact with an atomic nucleus

    Greetings, I was wondering if a fully ionized atom would interact with a photon. Id expect so but can't seem to find any info about it. Thanks! Physics Novice
  38. J

    Shooting an electron at an ion's nucleus

    I am just a tiny bit confused at what would happen if you shot an electron directly at an ion's (with no electrons like deutrium 2+...) nucleus? would it stop and if so why?
  39. A

    Can an antiproton(negatron) orbit around a regular nucleus?

    Can an antiproton(negatron) "orbit" around a regular nucleus? Since it's negatively charged like an electron, can it orbit around a "normal" nucleus? Or a more general question: can something be part matter and part anti-matter? Edit: I guess this answers my question...
  40. K

    Alpha particle touching Gold nucleus

    Homework Statement If the radius of the gold nucleus is 6.47 fm, and the radius of the α particle is 2.36 fm, then what is the minimum required kinetic energy for the α particle if we want the two nuclear surfaces to touch in a head-on collision? Homework Equations Ue=(kq1q2)/r The...
  41. D

    Solving the Mystery of X Nucleus Binding Energy

    Homework Statement I have a multichoice past exam that does not come with answers. Please help with the following: The binding energy of the X nucleus is 38.4MeV. Which of the following statements is FALSE? a) The binding energy of 38.4MeV represents the mass deficit between the...
  42. V

    Are quarks inside nucleus naturally entangled?

    Are quarks that made up a proton or neutron naturally entangled at all times? If not. When do they lose entanglement or reestablish entanglement? If they are always entangled. How about between two protons/neutrons or more. Are they all entangled?
  43. J

    What is the most accurate way to represent the heavy nucleus of an element?

    I'm sure everyone here will be familiar with the usual graphic or image used to show what an atomic nucleus might look like. Here are two typical images used today; --------- Everybody has seen those images. But in reality, we have no picture of an atomic nucleus, we can only draw the...
  44. J

    What is the Einstein relationship for calculating nuclear binding energy?

    I was reading over some nuclear physics and I came across the binding energy of a nucleus. The equation is Eb=[ZM(H)+Nmn-M(AZX)]x931.494 MeV/u I remember seeing this and using this in class when I took it over a year ago but I can't remember exactly how to use it and I see no examples in the...
  45. C

    Uncertainty Principle & an Atomic Nucleus

    Homework Statement A neutron in an atomic nucleus is bound to other neutrons and protons in the nucleus by the strong nuclear force when it comes within about 1 fm of another particle . What is the approximate kinetic energy in MeV of a neutron that is localised to within such a region? Take...
  46. T

    What keeps the electron from falling into the nucleus?

    What keeps the electron from falling into the nucleus?
  47. D

    Firing electrons at the nucleus

    Why can you fire neutrons or alpha particles at the nucleus and see interesting nuclear effects but you can't fire electrons at the nucleus? Or can you? I would guess not, otherwise electrons would collapse into the nucleus in every day life. I've heard that doesn't happen because it would...
  48. D

    How can DNA fit into the nucleus?

    Homework Statement How does a large DNA molecule enclosed in the nucleus of a cell? The Attempt at a Solution I know it has to do with histones and how DNA winds twice around it to make it shorter, but can anyone further expand on this? Thanks : )
  49. A

    Calculating Binding Energy of Deuterium Nucleus

    Homework Statement {a} Calculate the average binding enrgy per nucleon in the deutrium nucleus {b} The energy that binds an orbiting electron to the hydrogen nucleus is 13.4 eV. Calculate the ratio of the binding energy per nucleon to the binding energy per electron in deutrium. Which...
  50. K

    Why according to classical, electron circuling around the nucleus will emit EM wave?

    why according to classical, electron circuling around the nucleus will emit EM wave and lose energy and collapse? I know electron undergoes circular acceleration, but why emit EM wave?
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