Transition Definition and 544 Threads

Show, using directional arrows, which transition corresponds to... An energy level diagram is provided. Show, using directional arrows, which transition corresponds to the yellow light and which transition corresponds to the blue light. http://i.imgur.com/Dv670.jpg?1 I'm not really sure...

I have been trying to figure out which formula for the relationship between oscillator strength and transition dipole moment is correct. Wiki had the following formula: http://photonicswiki.org/index.php?title=Transition_Dipole_Moment f = 4.703 \times 10^{29} \bar{v} \mu^{2}_{ge}\,\...

Homework Statement I have the usual equation for the transition amplitude: A=< k|exp(-iHt)| j>,while my Hamiltonian in Dirac notation looks like: H=\sum E_a|a><a|+\sum_b (E_b|b><b|+V_1|0><b|+ V_2|b><0|) In order to find the transition rate I should take a derivative as: dA/dt, so that I will...

Hello all. My question is going to require some background. I'm 23 years old. In 2011 I graduated with a BA in Political Science from the University of North Carolina at Greensboro. I've had a lifelong passion for aviation. After college, I decided to enter a professional program at a local...

Hi I am looking at strontium, and I wish to find the difference in energy between the 1S0-1P1 transition (~ 461nm) in Sr-88 and Sr-86. I don't need to calculate it, I need to look it up in a table. I thought that NIST would be helpful (http://physics.nist.gov/PhysRefData/ASD/lines_form.html)...

Energy transition in LS-coupling ! :) Hello ! I have a small question I hope someone can help me :) Lets take for example a 2 electron system with l1,s1 and l2,s2. One electron changes energy due to electric dipole. I understand the rules for electrons in electric dipole transitions: 1) Δl =...

Transition in LS-coupling confusion ! :) Hello :) Lets take for example a 2 electron system with l1,s1 and l2,s2. One electron changes energy due to electric dipole. I understand the rules for electrons in electric dipole transitions: 1) Δl = +/- 1 (parity flips) 2)...

Homework Statement In a hydrogenlike ion with atomic number Z, the energies of the allowed states are given by E(n) = (-13.6eV) (Z^2/n^2) What is the wavelength asociated with the transition between first excited state and ground state of hydrogen-like helium? (He+) Homework...

Homework Statement I'm enormously frustrated with these problems. I've been trying to figure out how to find out what the transition matrix between C and B is for about 2 hours and I still can't get it. I've watched 4 youtube videos and read two websites as well as the section in my...

Homework Statement Let V be the vector space of all symmetric 2x2 matrices, and consider the bases. S = { [1 0] [0 1] [0 0] [0 0],[1 0],[0 1]} B = { [1 1] [-1 1] [1 0] [1 2],[ 1 1],[0 1]} of V. Find the transition matrix Ps,b. Use your answer to calculate Pb,s. Homework Equations a =...

This is from Krauss' A Universe from Nothing: It seems like he's saying that before inflation kicked in around 10^-36 or 10^-34 I forget which that the universe, I'm guessing from 10^-43 - 10^-36 was in some sort of false vacuum state, analogous to the way matter changes phase from gas to...

In book http://www.phy.uct.ac.za/people/horowitz/Teaching/lecturenotes.pdf in section 2 it is described transition from Poisson bracket into Canonical Commutation Relations. But it is written The experimentally observed phenomenon of incompatible measurements suggests that position and...

Homework Statement I design a markov model to study the availability of a node which will not work unless the network work: I make the following matrix. In which (i,j) means i is node up /down and j is network up/down. R1,R2 means the repair rate for node and network. F1,F2 means the failure...

Homework Statement Explain why the 1s2s (3P) excited state of helium is metastable?Homework Equations Spin multiplicity = 2S+1 J = |L-S|, |L-S|+1,...,L+S, L+S-1,.. Selection Rules: ΔL = +/-1 Δm = 0,+/-1 Δs = 0 state must change parity Δj = 0,+/-1 j = 0 -> j' = 0 NOT ALLOWED The Attempt...

According to my book, for 1st row Transition Metals, the acidity of a aquo-complex is greater for those elements at the right of the periodic table. They justify this by saying that to the RHS, the cation is more polarizing and weakens the O-H bond to a greater extent. I do get this, but...

When metals such as sodium react with an acid, a salt and hydrogen gas is produced. and we know for sure the oxidation state of sodium in the compound will be +1. But for other metals such as iron, when they rest with acids which oxidation state do I use? I'm unsure if I'm supposed to use the...

Hi all How does one calculate the recoil velocity of a hydrogen atom when the electron in it jumps from a higher orbit to a lower orbit (say from 3rd to 1st) ?

Hi all, I am looking to learn more about boundary layer control devices that can delay boundary layer transition (Laminar to Turbulent) and also BL devices that can delay flow separation. I have already found loads of info on Vortex Generators but i am having trouble finding info on things...

hello, does someone knows why there's a sharp transition between water and ice? from water to gas the transition is much longer... thanks.

Problem solved.Homework Statement The boiling point of a certain liquid is 95OC at the top of a mountain and 105OC at the bottom. Its latent heat is 1000 cal/mole. Calculate the height of mountain. It's Q4 of chapter 15 in Statistical Mechanics by S.K. MaHomework Equations it should be the...

Hi: I`m new here, can someone tell me which is the difference between the transition matrix and the Jacobian?, I did some exercises of the both topics, but How is it related? Thanks for the attention Sorry for my English writing, but English is not my native language.

Hi, I wanted to know who has an idea about a mechanism to transit from pressurised environment to vacuum environemtn without losing air.I know airlock does this work but it has some air loss.does anybody have idea? I thought about some kind of bulb to be produced at the transition place,is it...

Hey all, If I understand correctly, transition frequency is synonymous with the unity-gain bandwidth frequency. With that said, if you divide the gain at the operating frequency by the transition frequency, you should get the operating frequency. Please correct my logic if I am incorrect...

Hello, How would you/or is it possible to combine two transitional probability matrices? Say for example I have 2 matrices that both measure the probability of moving from one state to another (the states are 1, 2 and 3) Here is a picture http://dl.dropbox.com/u/54057365/All/TPM1and2.JPG...

Is anyone familiar with this or heard of this concept before? It started in 1953 by a paper by Dicke published in peer reviewed Physical Review Journal called "Coherence in Spontaneous Radiation Processes" http://prola.aps.org/abstract/PR/v93/i1/p99_1 Then in 1973 Hepp and Lieb published...

I found this on a webpage: In any transition element series, the number of unpaired electrons first increases from 1 to 5 and then decreases back to the zero .The maximum five unpaired electrons occur at Cr WHY?' doesn't it occur at MN??

Homework Statement Consider a system with states |i> (with energy Ei) and |f> with energy eF) AND A PPERTURBATION OF THE FORM w(t)=wcosωt i) WHAT IS THE PROBABILITY P(t) FOR A TRANSITION BETWEEN |i> AND |f> ? ii)FOR WHICH VALUE OF ω IS THE PROBABILITY MAXIMAL ?GIVE THE PROBABILITY IN THIS...

Hello, I am currently a second semester sophomore studying Mechanical Engineering thinking about studying Physics at the graduate level after my undergraduate degree is done. My main inquiry is regarding the transition from Mechanical Engineering to Physics. How hard is it exactly (if at all)...

Valence electrons of a transition element... Here is the electron config. for Iron (Fe) 1s2 2s2 2p6 3s2 3p6 4s2 3d6. I have two questions about this I've been on for hours... #1 Which subshell (4s or 3d) has the highest subshell? -You can say that the 3d has higher energy because you write...

I'm reading through Peskin&Schroeder, and they mention that the probability of transition from a state |\psi_0\rangle to a state |\psi_1\rangle is given by: \langle \psi_1|H|\psi_0\rangle where H is the Hamiltonian. Can someone please explain how this formula is derived? Thx

As I understand, a Markov chain transition matrix rewritten in its canonical form is a large matrix that can be separated into quadrants: a zero matrix, an identity matrix, a transient to absorbing matrix, and a transient to transient matrix. The zero matrix and identity matrix parts are easy...

Hi, I am not sure it is the right subcategory to post a question on statistical physics. But anyway, I read a couple of times that adding a m^3 to the Landau free energy implies that we may observe a first order transition phase, but I don't see why. Maybe it does imply some discontinuity in...

When transition metal start losing electrons they lose them from the s orbital before the d orbital. Why is this? The iron(II) ion has 24 electrons in this configuration: [Ar] 3d6 The neutral chromium atom also has 24 electrons, but in this configuration: [Ar] 3d5 4s1 I understand that...

Homework Statement A lifetime of the first excited state for some atom is τ, calculate natural line width for that line. The Attempt at a Solution Well, I could use energy-time uncertainty relation ΔE*Δt=h then ΔE*τ=h , now I can use a relation E=hc/λ to obitain Δλ=c*τ , which is...

How do radio waves carry the information? I mean the information is digital: 1 or 0, but what is 1 and what is 0 from perspective of radio waves?

I was reading an article about phase transition, i read about thermodynamic process such as Adiabatic process - a process with no heat transfer into or out of the system. Isochoric process - a process with no change in volume, in which case the system does no work. Isobaric process - a...

I don't understand why the constructed fiber bundle E have g_{\alpha \beta} as its transition function. The problem is in the pdf file,thank you!

Homework Statement The J=0 to J=1 transition fro 12C16O carbon monoxide occurs at 1.153x105 MHz. Calculate the value of the bond length in CO. Homework Equations 2B = h/(4π2I) μ = m1*m2/(m1+m2) I = μr2 The Attempt at a Solution I = 6.61x10-34/ (4*π2*1.153x108) = 1.45x10-43...

The new Dell XPS Studio 9100 has arrived. It has been about 8 years since I have migrated to a new PC, new OS, etc, and I am out of practice. I am migrating from XP SP3 to Windows 7 Home Premium 64 bit, and I would like to be able to seamlessly integrate some old favorite apps into the new...

This is really a continuation from another thread but will start here from scratch. Consider the case of a static thin spherical mass shell - outer radius rb, inner radius ra, and (rb-ra)/ra<< 1, and with gravitational radius rs<< r(shell). According to majority opinion at least, in GR the...

Hey, I was going over my electromagnetics course material and I realized we didn't learn much about anisotropic mediums (and still we had some homework questions about them). I'm trying to find some information about transition between anisotropic mediums, or even to be more specific -...

Hi, I have completed an undergrad introductory PDEs course using the Strauss text and am now transitioning to graduate PDEs using the Evans text. Though the first parts of these texts treat (generally) the same subjects, there is a vast gap between them in terms of 'mathematical maturity.'...

Does anyone have any advice on transferring to a different engineering discipline? I currently have a BS/MS in nuclear engineering and I'm really growing to dislike it after a little more than 2 years in the workforce. How feasible is it to transition into another field such as electrical or...

Is it possible to use interband transition to design mid-infrared photodetector? I want to design mid-infrared photodetector based on interband transition. I could not find any article that use interband transition for mid-infrared photodetector.

Dear Members, I am strugling with calculations on rapid phase transition (RPT) of CO2 in a high pressure vessel. I looked everywhere, from isochoric data to ...you name it but can't get there... The question: What will the resultant pressure be when solid or liquid CO2 in area A contacts...

Hi - I have a question here for the board. Ten years ago I received my Bachelors degree in Industrial Manufacturing and Systems Engineering. Due to economic conditions at the time, I took a job as an analyst and before too long, realized that my career veered down the business path. I am...

Homework Statement a particle with mass=m is in a 1-D infinite square well of width a. The particle is initially in ground state. A delta function potential V1=k δ(x-a/2) is turned on at t= -t1 and turned off at t=t1. A measurement is made at t2, where t2>t1. What is the probability that the...

Homework Statement When an electron makes a transition from (n+1) state to nth state, the frequency of emitted radiations is related to n according to (n>>1): (a)v=\frac{2cRZ^2}{n^3} (b)v=\frac{cRZ^2}{n^4} (c)v=\frac{cRZ^2}{n^2} (a)v=\frac{2cRZ^2}{n^2} Homework Equations...

Hi all I'm just curious about what a switch like this one entail. Currently I'm 1 1/2 way through my education at a local community college. Here is a short background on where I stand on this Earth (not physically!). I just recently began to become motivated and interested in educating...

How do I find the energy difference between 1s and 2p, in a carbon atom? I'm right in assuming this is a constant value, and yet I cannot find the answer anywhere..? Thanks