• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Chem 1A Objectives and Skills Checklists
Chem 1A Objectives and Skills Checklists

... Relate wavelength , frequency , and velocity of waves. Explain how electromagnetic radiation is produced by an oscillating charge. Explain how electromagnetic radiation carries energy from a transmitter to a receiver. Describe the collapsing atom paradox. List wave behaviors, and distinguish them fr ...
Chapter 8 - TeacherWeb
Chapter 8 - TeacherWeb

... symbols and numbers that represent elements and the number of atoms of each element.  “like a recipe”  CO₂ means one atom of carbon and 2 atoms of oxygen  The subscripts shows the quantity of the element  The formula DOES NOT SHOW THE SHAPE OF THE ...
Copenhagen Interpretation
Copenhagen Interpretation

... There exist paired quantities… the combined uncertainty of which will remain above a set level. MOMENTUM vs. POSITION ENERGY CONTENT vs. TIME ...
Review-QM`s and Density of States
Review-QM`s and Density of States

Lecture 14: Generalised angular momentum and electron spin
Lecture 14: Generalised angular momentum and electron spin

... so, lets do spin. in classical mechanics then there are two kinds of angular momentum, orbital and spin. this division is a bit arbitrary as the two are really the same thing. but in quantum mechanics the distinction is fundamental. orbital angular momentum of the electron about the nucleus is descr ...
Hydrogen Atoms under Magnification: Direct
Hydrogen Atoms under Magnification: Direct

... the definition of VðÞ and VðÞ are in use as well; see, e.g., Ref. [12]), defining the motion along the  and  coordinates, respectively. Reference [8] contained a remarkable prediction for the special case where the atomic hydrogen photoionization involves the excitation of quasibound Stark state ...
Hydrogen Atoms under Magnification
Hydrogen Atoms under Magnification

... the definition of VðÞ and VðÞ are in use as well; see, e.g., Ref. [12]), defining the motion along the  and  coordinates, respectively. Reference [8] contained a remarkable prediction for the special case where the atomic hydrogen photoionization involves the excitation of quasibound Stark state ...
Lecture 33 - Stimulated Absorption
Lecture 33 - Stimulated Absorption

... satisfies Eq. (1). However, this process is not a spontaneous one, because the atom is stimulated to absorb by the incident light field. a. ...
The p orbital paradox
The p orbital paradox

... The uncertainty in the position of the electron is of the same order of magnitude as the diameter of the atom itself. As long as the electron is bound to the atom, we will not be able to say much more about its position than that it is in the atom. Certainly all models of the atom which describe the ...
PowerPoint Lecture Chapter 17-20
PowerPoint Lecture Chapter 17-20

Chapter 38: Quantization
Chapter 38: Quantization

CH 101 Study Guide Test 2
CH 101 Study Guide Test 2

... What is stoichiometry and why is it useful Convert moles of one compound to moles of another Identify conversion factors Convert grams of one compound to grams of another using a balanced equation Know what the limiting reactant , actual yield and theoretical yield are Know the formula for percent y ...
TT 35: Low-Dimensional Systems: 2D - Theory - DPG
TT 35: Low-Dimensional Systems: 2D - Theory - DPG

Document
Document

... To be able to do this:  the orbitals involved must have the same energy  there must not be an electron in the second orbital with the same spin as that in the first orbital. If there is, the electron cannot orbit without breaking the Pauli principle. ...
Thermochemistry (4 lectures)
Thermochemistry (4 lectures)

... To be able to do this:  the orbitals involved must have the same energy  there must not be an electron in the second orbital with the same spin as that in the first orbital. If there is, the electron cannot orbit without breaking the Pauli principle. ...
Chapter 2: Atoms, Molecules, and Ions
Chapter 2: Atoms, Molecules, and Ions

Atomic Structure, Eelectronic Bonding, Periodicity, orbitals
Atomic Structure, Eelectronic Bonding, Periodicity, orbitals

... screening by other electrons in the same principal shell. Atomic radii increase from top to bottom down a column because the effective nuclear charge remains constant as the principal quantum number increases. ...
Chapter 5 The Wavelike - UCF College of Sciences
Chapter 5 The Wavelike - UCF College of Sciences

... system varies inversely with separation distance U  qeV  k ...
- Philsci
- Philsci

... apparatus, and physical knowledge as such, which we cannot doubt in the actual situation of inquiry. A theory must be meaningful and relevant with respect to what we know and in general assume to be true. As a consequence, he believed that the use of classical concepts, developed by classical physic ...
Chapter 15 File
Chapter 15 File

... toward the positive electrode. These cathode rays caused the glass to glow when they struck the far side of the tube. The rays could be deflected by a magnetic field. In 1885, after several years of experiments with improved vacuum discharge tubes, William Crookes in England suggested that cathode r ...
Sep 12 - BYU Physics and Astronomy
Sep 12 - BYU Physics and Astronomy

Time-Resolved Coherent Photoelectron Spectroscopy of Quantized
Time-Resolved Coherent Photoelectron Spectroscopy of Quantized

... beating frequencies (Fig. 3A, inset). The two main frequency components are 4.3 and 2.3 THz, which yield energy differences of 17.8 and 9.6 meV, respectively. The deduced values are slightly higher than the theoretical energy differences expected from Eq. 1 with the quantum defect a 5 0.21 that repr ...
File - SPHS Devil Physics
File - SPHS Devil Physics

Magnetic Torque Anomaly in the Quantum Limit of Weyl Semimetals
Magnetic Torque Anomaly in the Quantum Limit of Weyl Semimetals

... Gordon and Betty Moore Foundation’s EPiQS Grant (GBMF4374), G.S. Boebinger (NSF DMR-1157490) ...
8. Molecular Geometry
8. Molecular Geometry

... C 4 eO 6 e- X 2 O’s = 12 eTotal: 16 valence electrons How many are in the drawing? ...
< 1 ... 146 147 148 149 150 151 152 153 154 ... 313 >

Bohr model



In atomic physics, the Rutherford–Bohr model or Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity. After the cubic model (1902), the plum-pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just Bohr model for short (1913). The improvement to the Rutherford model is mostly a quantum physical interpretation of it. The Bohr model has been superseded, but the quantum theory remains sound.The model's key success lay in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen. While the Rydberg formula had been known experimentally, it did not gain a theoretical underpinning until the Bohr model was introduced. Not only did the Bohr model explain the reason for the structure of the Rydberg formula, it also provided a justification for its empirical results in terms of fundamental physical constants.The Bohr model is a relatively primitive model of the hydrogen atom, compared to the valence shell atom. As a theory, it can be derived as a first-order approximation of the hydrogen atom using the broader and much more accurate quantum mechanics and thus may be considered to be an obsolete scientific theory. However, because of its simplicity, and its correct results for selected systems (see below for application), the Bohr model is still commonly taught to introduce students to quantum mechanics or energy level diagrams before moving on to the more accurate, but more complex, valence shell atom. A related model was originally proposed by Arthur Erich Haas in 1910, but was rejected. The quantum theory of the period between Planck's discovery of the quantum (1900) and the advent of a full-blown quantum mechanics (1925) is often referred to as the old quantum theory.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report