Excited Definition and 174 Threads

After 26 long years... finally!:cool: This is a bootleg of the preview that was shown at Comic-Con just two days ago. So far it sounds like it's coming out in 2011. Edit: removed clip

I've been researching the change of energy levels of electrons when excited by photons. The equations I have found are... E_n = (-2pi^2 * m * e^4 * Z^2)/(n^2 * h^2) Which gives us the energy of the electron at a particular energy level. m = mass of electron e = electric charge of...

How long an atom remains excited? How can we prolong the excited state of an atom? Whether its possible. Thx

I know what an exited atom is : any of it's electron is elevated from the ground state. But I can't really figure out what is an excited molecule (e.g diene of polyene)... I have read molecules like diene or polyene can be excited and they absorb light wave for this as atoms do to send some of...

I know that i am commiting some serious errors in this , but just can't notice them suppose we have to find the recoil energy of an excited atom when it de excites suppose the total energy of the process is E an atom will emit a photon on returning to normal state . energy of the photon...

Homework Statement Use the shell model to find reasonable configurations for the first 5 excited states of O-15. Homework Equations The spin-parity and energy above the ground state for the first five excited states are: ground state: (1/2)- excited states: 5.18 MeV, (1/2)+ 5.24 MeV...

Can you please give me a hint to start this problem? The Einstein Aij coefficients are related to the lifetime an atom can spend in an excited state i before going to state j. Using Heisenberg’s Uncertainty Principle, show that large values of Aij lead to line profiles with large values of...

Homework Statement Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. 1s2 2s2 2p4 3s1 [Ar]4s2 3d5 4p1 Homework Equations none The Attempt at a Solution I have no...

Here's the problem: http://www.phys.washington.edu/users/karch/324/2007/hw3.pdf Just the first one. Okay, so my understanding is that the first state of Psi (ground state) is just an arc, like a Gaussian distribution, starting from 0 at E0 and finishing at 5a also at the level of E0...

Hi, I am reading about protons and their transfer mechanisms and often the words nonadiabatic and excited state are used in a way which confuses me. If I have a proton in a higher vibrating state (E1) I would called that an excited state for the proton - is this also a non-adiabatic state...

Alejandro Satz blog has comment on Reuter's Loops '07 talk Also several people have remarked about what Reuter had to say in his lectures at the Zakopane QG school earlier this year. It made a big impression on the grad students there. I have listened to his Loops '07 talk several times while...

If a nucleus is in its first excited state, is its total rest energy then mc^2 + Eex1?

My wife and I had our first baby on 9 Mar 2007 at 9:50PM GMT in Lakenheath, UK. Her name is Ansley Mae McArthur and she is the most precious thing in the world. I just wanted to share my excitement with everyone on the forums. Sorry if I'm gloating, but I'm just so freakin proud to be a daddy!

Consider a helium atom where both electrons are replaced by identical charged particles of spin-1. Ignoring the motion of the nucleus, the Hamiltonian is [see attachment 1] Construct an energy level diagram ( qualitatively ) for this "atom", when both particles are in the n=1 state, and...

Hello. I'm trying to grasp this concept. The question states: An excited atom decays to its ground state and emits a photon of green light. If instead the atom decays to an intermediate state, what color of light might be emitted? I have the electromagnetic spectrum with the visible lights...

I've moved into res today and am so excited that I thought I'd let everyone know! kk, time to go meet some ppl! cya!

I would like to ask for some help regarding the circuit design of this motor...

Hi, i would be very grateful for some help... I have recently conducted an experiment and but I am not sure how to compare the values i measured with 'predicted' results (from theoretical equations). This is for the 'open circuit characteristic of a dc generator'. I set values for the...

A sample of hydrogen gas absorbed sufficient energy to make the electrons jump to the 3rd excited energy level. It is said that 6 lines can be observed in the complete emmission spectrum as the atoms relax back to ground state. But why six though? When I check a diagrm of the spectrum, it...

Sodium vapor lamps are widely used for lighting public areas such as parking lots by emiting 589 nm yellow light. a. how much energy is emitted by one excited sodium atom when it generates a photon? b. How much energy is emitted when 1.00 mole of sodium atoms each generate a photon? Can...

I cannot wait! It should be at my door tomorrow afternoon...the anticipation is almost painful!

I was a little surprised not to see any talk here about Sony's Playstation Portable. I got one the day they came out. I figured I would have limited use for it, like waiting to get my tires changed, or the morning visit to the bathroom, or during longs trips. Instead, I haven't been able to...

is there any transition of He+ that could be excited by collision with an excited hydrogen atom in 2s^1?

hi ppl, i have some questions here about photosynthesis,really appreciate if you can answer them for me. 1) If a chlorophyll solution is excited with UV radiation, how do we know what colour is the fluorescence? 2)In the water splitting step of photosynthesis, two Hydrogen ions and one oxygen...