Factors Definition and 446 Threads

Hello! I am reading about laser cooling, and I see people talking about the Frank Condon factors. It seems to be just a vibrational overlap integral, but I found different definitions in terms of whether is just the integral or its square (the difference is huge, so it should matter). What is...

What environmental factors cause Multiple Sclerosis? I’ve had MS 27 years and have a wealth of knowledge except for the why. I’ve had the disease knowingly since 1997. Trying to communicate with others regarding all things regarded medical miracles.

Let me start by showing the problem as it appeared in the text. Attempt : ##{\color{red}{\large *}}## The key thing is to do the problem in a "good way", whereby I can express ##x^3+y^3=f\{(x+y), (x-y)\}## purely, with no cross terms - and that is not what I am able to do. Below I reproduce...

I tried to prove this but I fall into a loop when I try to apply integration by factors, that is I prove that the integral is equal to itself. Any helpfull tips?

I am looking for experimental nucleon form factors from electron-nucleus scattering. Is there any compliations or tables? In 'The proton charge radius ', H. Gao and M. Vanderhaeghen, Rev. Mod. Phys. 94, 015002 (2022), p. 24, there is 'world data on the proton and also the neutron'. In 'Form...

Greetings all, I'm new here and hope I'm asking this in the correct thread. So, the question is; where you have a vacuum created by a "flow through" liquid witin a large diameter container exerting suction force upon a smaller diameter input tube submerged in a liquid, does the surface area of...

Hello. Would you please explain the factors that determines the opening time of a program or a big file. For example if you have a large excel file, why would you have a difficulty to open it, if it is very large? If it is in your PC's main storage, that is either HDD or SDD, is it reading...

My first approach; ##(a-b)^3+(b-c)^3+(c-a)^3=a^3-3a^2b+3ab^2-b^3+b^3-3b^2c+3bc^2-c^3+c^3-3c^2a+3ca^2-a^3## ##=-3a^2b+3ab^2-3b^2c+3bc^2-3c^2a+3ca^2## what i did next was to add and subtract ##3abc## ...just by checking the terms ( I did not use...

Queries regarding MKS to CGS system for the following formulas. Force - Newton (MKS), Dynes (CGS) Work - Joule (MKS), Ergs (CGS) 1N = 10^5 dynes. 1J = 10^7 ergs. How the above unit conversion formulas are derived ?

[url="https://www.physicsforums.com/insights/probabilistic-factors-involved-in-disease-and-virus-testing/"]Continue reading...

When a Mars Simulation Goes Wrong https://www.theatlantic.com/science/archive/2018/06/mars-simulation-hi-seas-nasa-hawaii/553532/ The article came across my desk (computer screen). Human behavior is complicated. I'm more interested in the technical side of space travel, specifically the...

Preface: I am new to physics and am trying to learn on my own, though I hope to take a class soon. I looked for a forum for beginners but didn't see one, but this seemed to be the closest forum. So I hope I can get some help with my question here. If it is the wrong forum, feel free to...

Error Vector Magnitude is widely used in the telecommunication industry to assess the performance of the users. In the given formula, Sr(n) is the received symbol and St(n) is the ideal symbol. N is the total number of symbols received. I have a Multi-User MIMO system simulation where there are...

$\textbf{5.t.11 }$ McKinley HS Find x for $f(x)=0 \quad 5+i\quad 5-i\quad $ $\begin{array}{rl} \textsf{factored} &f(x)=(x-1)[x-(5+i))(x-(5-i)]\\ \textsf{foil} &x^2-x(5+i)-x(5-i)+(5-i)^2\\ \textsf{expand} &x^2-5x-xi-5x+xi+25-2i+i^2 \\ \textsf{simplify}...

Hello I have problems with this exercise Find the elementary divisors and invariant factors of each of the following groups a) $G1= Z_6 \times Z_{12} \times Z_{18}$ , b) $G_2= Z_{10} \times Z_{20} \times Z_{30} \times Z_{40}$Thanks

how they got that value for the scale factors h?

Have a look at O5 & O6 in Eqtns(5.4) . Why is there a (V+A) ? (V+A) contains the projection operator which projects out the right Weyl from a Dirac spinor. As per the Feynman rules of electroweak theory, there is a (V-A) assigned to each (Dirac) spinor-W boson vertex because W only couple to...

In a bag there are m white balls and n red balls with mn = 200 and there are more white balls than red balls. If two balls are taken randomly at once and the probability of taking two different colored balls is \frac{40}{87} then the value of 2m + 3n is ... A. 30 B. 45 C. 50 D. 70 E. 80 Okay...

Hi all, I'm studying the compression spring design issue that occurred in a machine design application. As illustrated below, spring is bouncing or oscillating after impact to a stopping surface (1 -> 2 -> 3 -> 4) and eventually stop after few bounces. Ideal case for this application is to...

Hi there, bored physicist here. I wondered about factorization so I made some plots and a model fit to satiate my curiosity, but it only made me more curious. Now I just want the answers! I didn't know which prefix to use. "Hobbyist" seemed more appropriate but we don't have that so I went with...

I get 2^5 x 3^80 Am I correct?

My idea was to consider first the structure of the matrix element and to see if there are any possible constraints that we could use for parametrization. If I am not mistaken, we are dealing with the hadronic decay governed by QCD which conserves parity. Since we have a derivative operator...

I seem to be getting an unsolvable integral here (integral calculator says it's an Ei function, which I've never seen). My thought was to use Bernoulli to make it linear and then integrating factors. Is that wrong? The basic idea is below: P(x) 1, Q(x) = 1/2(1-1/x), n=-1, so use v=y^1-...

I am lookin designing balancing resistors for series capacitors and understand that I need to consider the leakage current from the capacitors. I am trying to determine factors that would case the insulation resistance to decrease over time so I can design around that.

The ranked order from most to least effectively reducing the widths of the primary maxima is: A>D=C>B. I know that doubling the wavelength of incident light will double the width (y) of the fringe. This means that doubling the frequency of incident light will reduce the fringe width (y) by half...

I'm thinking about the large (for the 1960's) farm tractors I drove, that produced lots of low end torque, and max RPM was ~ 1800 ~2200 (from memory). Are there certain design factors to maximize horsepower at these low RPMs, versus a common auto engine that might peak around 5,000-6,000 RPM...

The following quote is from a post of mine to the 'Rocket Fuel' topic a couple weeks ago:quote:Do you know why we haven't been back to the moon and why we aren't in space (the pathetic space station not withstanding)? Because our government is full of wussies like some posters here. We aren't in...

I have a few questions about redshift. First off, is it believed that the redshift of a galaxy is completely due to the Doppler effect or could something else be contributing to the redshift. And second, do the values we receive for the redshift of a galaxy vary slightly depending on are...

Human Behaviour - Explaining altruism.Economist article at< >- Sivakami.**************************************************Reality is that which, when you stop believing in it, doesn't go away."- Philip K. Dick

Like the title says: which factors play a role?Also, why do some (unstable) atoms emit alpha-particles, while others emit beta- or gamma-particles/radiation?Thanks for any insights!

I suppose this could be in the other sciences forum, but, i'd like a heavy dose of philosophy when and if anyone replies to this.So, like the topic title says...What made the human race explode out of the gates?"Now in the moment all falls into focusTime, just a number warped while I�m wrapped...

It is commonly believed that the speed of propagation of EM radiation (including light) in empty space is a universal constant, the same everywhere and everywhen. If so, what deterines that speed?Maxwell tells us that c is determined by the electric property (permittivity) of empty space...

well.. just a short homework question really, but what factors can affect the coefficient of restitution on a ball... say a tennis ball?I've got ball pressure (temperature), mass, the coefficient of friction of the surface it falls on and ball spin...Also, does the release height affect the COR?

What gives rise to what we call sentience?-----------------------------------------------------If I'm politically correct, it's probably just a coincidence.

if a low tide is pulled 500 meters back and the moons force of pull is 3 feet per hour but it took 35 hours to reach a distance of 500 meters and the shore droped 1 foot per 25 feet what would the high tide be and what would the variables be? can anyone answer this for me? i don't understand this...

It is commonly believed that the speed of propagation of EM radiation (including light) in empty space is a universal constant, the same everywhere and everywhen. If so, what deterines that speed?Maxwell tells us that c is determined by the electric property (permittivity) of empty space...

I calculated the period of the moon and got a value of 26.9 days, short of 1.1 days compared with the 28 days of lunar calendar. Can someone tell me what I have missed?Will it be necessary to consider the orbit being elliptical? As I understand it, Kepler's 3rd Law is stiill valid for...

Public release date: 22-Aug-2002Contact: Susan Griffith,sbg4@po.cwru.edu,216-368-1004Case Western Reserve University, Cleveland.Adolescent development shaped by a host of social settingsNo single "silver bullet" produces a well-adjusted adolescent, according to a team of sociologists reporting...

Poll Question:Which of the following is (are) most critical to the future of physics?A. Physics community/Information/EducationB. Experiment/Observation/InventionC. Mathematics/Theory/ComputationA wake to imagination! {^,^}Choices: A B C A & B A & C B & C A & B & C Other (please elucidate below)

If I drop a golf ball from 1M up onto a turf lawn it bounces only a small distance.If I drop the same ball from the same height onto a concrete path it bounces much higher.If drop a ball made of a different material with the same dimensions and mass onto the same concrete path it bounces less...

Axiom 1: every natural number factorization is sole.No same factors theorem: between every both odd number from 2n to 2n- square root(2n), it is not same factorization.The certification summary as follow:To consider both odd numbers A1, A2. Its all primary factors are same.As this reason...

What determines the:1) Number;2) Frequency;3) Frequency distribution (e.g. 10% at radio wave band, 10% atmicrowave...)When a matter-antimatter annihilation happens?Also, suppose 1 positron and 1 electron collide. At the instant oftheir annihilation, don't we know the position of the created...

is anybody could tell how to find all the factors of a number? for example, the factors of 63798?? just give me a way or hint... thx!!

Poll Question:If two people lived in the same place, same city, same society, and could access same infos, but are in different families, what will determine who is smarterlet's see what i mean 'Smarter' here :1-not in a certain subject2-person who can understand easily3-person who most people...

Apologies for my fairly undescriptive title, I'm having trouble coming up with a better one. I'm simply trying to verify whether my understanding of this problem is correct. 1. Pushing the oven up a ramp 4m long would require more force (my reasoning here is based on the results of a lab which...

I read the following two points: Temperature is indirectly proportional to surface tension. Adding impurities affect the surface tension of the molecules. Adding soluble impurities increases the surface tension whereas adding sparingly soluble impurity decreases the surface tension. Why...

To be more precise the generator has to be able to produce around 1.5 Watts from a person spinning its axis, which is why I was thinking of putting a gearbox in my design but I need to know how much Torque would it take to spin the axis and at what rpm would the generator be effective.

In the attachment in eq. (1.6) I don't understand why is ##H-B = B/(1-D)##? Where does this relation come from?