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Niels Bohr

Niels Bohr is a scientist that revolutionized the way we look at atoms today. He won the 1922 Nobel prize in physics.

438 Questions

What are the shortcomings of the binomial pricing model?

b) Binomial pricing model doesnt provide for the possibility of price of the underlying remaining the same between two consecutive time points (it assumes that either the price could go up or could come down; it completely ignores the possibility of the price not changing at all) a) Binomial pricing model breaks up the time to the expiry of option in to a limited number of time intervals and hence, the price calculated through binomial trees is more of a broad approximation of the actual price. (Compare this with Black Scholes (BS) Model which gives a more accurate approximation because the BS model involves breaking the time to expiry into infinitesimaly small time intervals).

What was the effects of Neils Bohr's contribution to the atomic theory?

That led to know about the size of the atom and the reason of getting five different series of spectral lines in case of hydrogen such Lymann, Balmer, Pashcen, Bracket and Pfund.

Derive the following expression for calculating radius of bohr's orbit?

If you want to ask questions about the "following", then I suggest that you make sure that there is something that is following.

Why are the martingale models less restrictive than the random walk model?

The error term in a random walk is assumed to be iid (often white-noise), but the error in a martingale doesn't have to be. If the error is AR(1) however, then the process can't be martingale, as the error in last period is known, and so the current period error is not mean zero anymore. But the error may have second order serial correlation (like an ARCH process), and still be a martingale. The error in a random walk however must be independent of the prior error (at all orders).

Why was daltons model accepted?

Dalton's atomic theory or model was accepted despite errors. This is because his theory provided a logical explanation of concepts and led the way to new experimentations.

Why was bohrs model accepted widely?

Bohr's model of the atom was widely accepted because it successfully explained the spectral lines of hydrogen, which previous models could not. Additionally, his model provided a visual representation of electron energy levels and orbits, making it easier for scientists to understand and work with. Furthermore, the model could be used to predict and explain other phenomena in atomic structure.

How many shells are in a Bohr atomic model?

Bohr model consists only one shell.(a hydrogen atom shell) But shell can be increased by exciting the atom. When the electron comes to its shell it loses energy,therefore,different types of regions have been observed i.e,(Lyman,Balmer,Paschen,Bracket and Pfund)

What is the achievement of neil bohr?

After Ernest Rutherford showed that atoms consisted of an exceedingly small, positive nucleus; while the electrons were far outside of this center; it was unclear how such an arrangement could result in the emission spectra of such atoms. Scientists tried to show that only certain vibrations could result within this atomic setup -- in much the same way that only certain vibrations are permitted on a violin string -- but without success. The problem they kept running into was their assumption that electrons could be any distance from this nucleus.

Neils Bohr adopted the radical postulate that electrons were permitted ONLY in very discrete radial orbits around the nucleus. Thus, an electron could be orbitting at a distance of 1.00 angstroms from the nucleus, or at 2.00 angstroms, but never at .99 A, 1.01 A, or 1.50 A. While this Bohr Model was eventually deemed too simplistic, it was an incredibly radical shift in the understanding of atomic structure.

If i want to be a doctor what kind of bachelors degree do i need to get?

Med schools accept a variety of degrees, however science based degrees are probably preferred and prepare you better. If you want to become a doctor, there are several types of bachelor's degrees you can persue. However, you usually become involved in a "pre-med" curriculum during it. This may entail majoring in chemistry, biology, materials or chemical engineering, etc. For example, you would say that your major was, "Biology, pre-med." Once you graduate with your bachelor's degree, you need to take the MCAT test, and apply for medical school. After four years of med school you will usually be involved in an internship and residency that leads you into your independance as a doctor.

How are emissions of radiation from an atom explained by Bohrs model?

Electrons absorb energy to make electrons move from an lower energy level to a higher energy level. This energy is released as some form of e-m radiation when the electron moves from the higher level to a lower energy level.

What did niels bohrs 1913 model of the atom look like?

Niels Bohr's 1913 model was the first to depict the atom as small positively charged nucleus in the center with negative charged electrons circling around it, similar in shape to the solar system. Though quantum theory has made his model obsolete. it is a simple and good enough approximation it's still be taught today when introducing students to the atom.

What concept in Bohr's theory makes it impossible for an electron in the ground state to give up energy?

By definition, no object can go to a lower energy level than its ground state. Bohr simply assumed that the ground state of an electron in an atom was due to the minimum amount of angular momentum it could have. An electron could have that minimum amount (we'll call it 'h') or two times h, or three times h; but never less than h, and never a fraction of h.

Since an electron can never go to a lower energy level than its ground state, it can't give up energy.

What is are some nicknames for Niels Bohr?

Some common nicknames for Niels Bohr are "The Father of Quantum Theory" and "The Architect of the Atom."

What was Niels Bohr's address in 1941?

Since the 1930's he had lived in a honorary house put a his disposal by the 'Carlsberg trust'. He lived here when Heisenberg and him had their famous meeting in 1941.

You can see the building on this map : http://www.carlsbergbyen.dk/62/carlsbergs-akademi/

It's on the old premises of the Carlsberg brewery, which are currently being turned into a new housing and shopping area while maintaining the best of the old structures including the honorary house.

What does the diagram look like for the serpentine belt for a 1995 Ford Windstar?

Everything you could want to know about Windstar serpentine belts is in the "Related Questions" ... from installing to finding online diagrams.

How are the bohr model and quantum model similar?

A Bohr model--Indicate all the electrons in the atom,in various shells in the atom.

In the form of planetary model like nucleus is the center&electrons are surrounding it.

A Lewis model--Indicate only the electrons in the outermost shell in the atom.

In the form of electron dot structures we can write an atom in the middle & surrounding will be the valence electrons in the form of dot's.

What does the fuse diagram for a 1996 Jeep Cherokee look like?

The fuse diagram for a 1996 Jeep Cherokee typically includes a layout of the fuse box, which is usually located under the hood and inside the cabin. It indicates the location and amperage rating of each fuse, as well as what systems they control, such as headlights, radio, and ignition. The diagram is often labeled with numbers corresponding to each fuse's position, making it easier to identify and replace blown fuses. For precise details, it's best to refer to the owner's manual or a specific repair guide for the vehicle.

Does the Bohr model predicted the spectra of hydrogen atom and beryllium ion?

The Bohr model successfully predicted the spectra of hydrogen atom but faced limitations with more complex atoms like beryllium ion. The model's simplicity and assumption of circular orbits limited its applicability to atoms with multiple electrons or higher atomic numbers.

How did niels bohr idea get revised?

Niels Bohr's initial atomic model, which depicted electrons orbiting the nucleus in fixed paths, was revised with the development of quantum mechanics. The introduction of wave-particle duality and uncertainty principles by scientists like Louis de Broglie and Werner Heisenberg led to the realization that electrons do not have precise orbits but exist in probabilistic wave functions. This shift culminated in the quantum mechanical model of the atom, which describes electron behavior in terms of probabilities rather than fixed paths. Thus, Bohr's model transitioned from a simplistic view of atomic structure to a more complex and accurate quantum framework.

What was the contribution of Niels Bohr to quantum mechanics?

Niels Bohr significantly advanced quantum mechanics through his model of the atom, proposing that electrons occupy specific energy levels and can jump between these levels by absorbing or emitting energy. His introduction of the concept of quantization, particularly in his explanation of the hydrogen atom's spectral lines, laid the groundwork for quantum theory. Additionally, Bohr's principle of complementarity emphasized the dual wave-particle nature of light and electrons, influencing the philosophical understanding of quantum mechanics. His work earned him the Nobel Prize in Physics in 1922, establishing him as a pivotal figure in the field.

What are the answers to the Explore Learning Gizmo Assesment Questions on bohr's model introduction?

I'm sorry, but I can't provide specific answers to assessment questions from Explore Learning Gizmos or any other educational platform. However, I can help explain concepts related to Bohr's model, such as electron orbits, energy levels, and how it describes the behavior of electrons in atoms. Let me know if you'd like more information on those topics!

How have Niels Bohr achievements helped people today?

Niels Bohr's achievements, particularly his development of the Bohr model of the atom and his foundational contributions to quantum mechanics, have profoundly influenced modern physics and technology. His work laid the groundwork for understanding atomic structure and behavior, which is essential for advancements in fields like chemistry, materials science, and nuclear energy. Additionally, Bohr's principles have facilitated innovations in medical imaging, electronics, and quantum computing, impacting various aspects of daily life and technological progress today.