Calculation Definition and 1000 Threads

A calculation is a deliberate process that transforms one or more inputs into one or more results. The term is used in a variety of senses, from the very definite arithmetical calculation of using an algorithm, to the vague heuristics of calculating a strategy in a competition, or calculating the chance of a successful relationship between two people.
For example, multiplying 7 by 6 is a simple algorithmic calculation. Estimating the fair price for financial instruments using the Black–Scholes model is a more complex algorithmic calculation.
Statistical estimations of the likely election results from opinion polls also involve algorithmic calculations, but produces ranges of possibilities rather than exact answers.
To calculate means to determine mathematically in the case of a number or amount, or in the case of an abstract problem to deduce the answer using logic, reason or common sense. The English word derives from the Latin calculus, which originally meant a small stone in the gall-bladder (from Latin calx). It also meant a pebble used for calculating, or a small stone used as a counter in an abacus (Latin abacus, Greek abax). The abacus was an instrument used by Greeks and Romans for arithmetic calculations, preceding the slide-rule and the electronic calculator, and consisted of perforated pebbles sliding on iron bars.

View More On Wikipedia.org
  1. R

    Please check my calculation of the resistance of this wire shape

    I explained what I want to tell you in the picture I add. Thanks in advance.
  2. Z

    Calculation using 3 quantities: Shoveling snow to earn money

    Summary:: Hi, I am trying to solve the following: A person shovels driveways to earn money. She can shovel 12 driveways in 6 hours. She earns 18$ for each driveway.The person needs 360$ to buy a computer. How may hours does the person need to work? I am using unity method : 18$----6 hour 1...
  3. Ackbach

    MHB Counterfactual Expectation Calculation

    $\newcommand{\doop}{\operatorname{do}}$ Problem: (This is from Study question 4.3.1 from Causal Inference in Statistics: A Primer, by Pearl, Glymour, and Jewell.) Consider the causal model in the following figure and assume that $U_1$ and $U_2$ are two independent Gaussian variables, each with...
  4. Yani Botsanovski

    Eddy current calculation question

    Hello there! I have seen some great eddy current brakes and wanted to learn more about it. The problem in the internet I can not the specific case I have in mind. I searched the internet and found a great deal of material about magnetic forces. I cannot, however, find the specific case I'm...
  5. qnach

    I Nanoantennae calculation for covid-19

    Could anyone calculate the resonance frequencies of this molecule? The radius is about 50-200nm.
  6. nilfound

    Physics Mental calculation and its importance in physics

    I have been struggling with being able to mentally calculate math problems for quite a long time. I am worried I will fall behind if I don't master this skill. How important is it to have a firm grasp on this skill if I am choosing to pursue a career in physics?
  7. B

    Ammonia Rankine cycle heat engine calculation

    A Rankine Cycle heat engine uses ammonia as a working fluid, turbine entry temperature is 25 Bar at 60 degrees Celsius. The turbine outlet pressure is 4 Bar, the question is: what is the outlet temperature? and if the output power is 6 Gigawatt (6x10^9 watt) what would the mass flow rate of the...
  8. N

    Calculation of g-factor correction in Peskin p. 196

    I'm reading peskin QFT textbook. In page 196 eq. (6.58) it says $$F_2(q^2=0)=\frac{\alpha}{2\pi}\int ^1_0 dx dy dz \delta (x+y+z-1) \frac{2m^2z(1-z)}{m^2(1-z)^2}\\=\frac{\alpha}{\pi}\int ^1_0 dz\int ^{1-z}_0 dy \frac{z}{1-z}=\frac{\alpha}{2\pi}$$ I confirmed the conversion from the first line...
  9. Z

    I Is the calculation related to average or probability?

    Hi, I am trying to understand the calculation in the following research paper: http://cramton.umd.edu/market-design/abdulkadiroglu-sonmez-house-allocation.pdf
  10. SpaceThoughts

    Velocity calculation of an accelerated mass based on an increasing force

    A known force is doubling (egal) over a known distance, accelerating a mass. How do I calculate the final velocity of the mass at the end of the known distance , when the mass has doubled? I don't know the time. The mass is accelerated from 0 meter and from 0 velocity.
  11. jim421616

    Help with uncertainty calculation

    This is from an online quiz. I thought the answer would be 0.6/5 = 0.12 0.12*0.6 = 0.072 ∴ 7.2% but apparently this is wrong. Can anyone help me out please?
  12. G

    Heat in a const. pressure/volume calculation

    Hi All, In thermodynamics close system there are two const. processes in which we can calculate the heat: const. pressure const. volume I took 2 simple examples for these processes to test the results according the manufacturer data: For const. pressure I choose 1 liter 1.5 KW teapot For const...
  13. sabenabe

    Water stream projection distance calculation for different nozzle shapes

    Hello, I have built a device and i want to test different types of nozzles. Problem is; the size of the nozzles i need are hard to find in company stock. So i need to make sure before i make any order. I have no background or degree any related area so it is hard to understand the equations...
  14. L

    Integral for the calculation of torque

    Hello, I found an integral to calculate the torque from the applied torsional shear stress, and I didn't find an explanation of how this integral is deviated. Where does it come from? Could someone explain? T = ∫τ⋅r⋅dA = ∫τ⋅2πr⋅dr, where T is the torque and τ the shear stress. Thanks a lot!
  15. mastermechanic

    A Non-quasi-static Air Compression Calculation

    Hello Everyone, As some of you know, there are airsoft guns which work with a spring and piston mechanism. An electric motor drives a semicircle gear and that gear drives a rack gear connected to piston. When the gear compresses the spring and reaches semicircle’s free end the piston...
  16. r12214001

    Chemistry Is the Solution Manual's Approach to Internal Energy Calculation Accurate?

    Question: Solution manual: Is the solution manual correct or not? why does not contain heat transfer?
  17. r-swald

    Troubleshooting Force Calculation Errors

    I attempted this a few times but keep getting the same wrong answer... Converted the values: q1 = 6.6E-6 q2 = 1.42E-6 q3 = -2.04E-6 d1 = .03m d2 = .02m Calculation for force on 1 F1 = - F12 + F13 = - (9E9*6.6E-6*1.42E-6 / .03^2) + (9E9*6.6E-6*2.04E-6 / .02^2) (I used negative for F12 to...
  18. M

    How Can I Estimate the Tonnage Needed for a Smooth Press Fit?

    Hi All! I have an application where a bush is press fitted into a housing with repeated blows from a 1kg hammer. Is there a way to calculate(estimate) the tonnage of the press which can do the same,in a smooth (non impact) manner ? TIA !
  19. E

    Calculation involving the reactance of a combination

    If just found out about reactances and impedances today and came across this little problem. I have worked it through with a sort of brute force approach (that I'm not totally sure is correct!) but wondered if it could be done slightly more quickly? I denoted the impedance of the top branch...
  20. G

    What is the thickness of a steel bar with holes?

    I’m trying to calculate the thickness of a steel bar with holes. It’s hard to describe so here’s a picture Imgur: The magic of the Internet (the white circles are 10mm holes and the dark grey area are 2mm steel wallthickness). If the holes would be horizontal inline to each other with 2mm...
  21. H

    DIY dyno calculation with an Arduino sensor circuit

    I would like to know if this formulae i have are good enough to make calculations. My plan is to count time of each roll with Arduino.I don't have roller yet so i don't know moment of inertia.angular acceleration = radians/secounds TORQUE = moment of inertia (kg∙m2) * angular acceleration RPM =...
  22. P

    Magnetic field Calculation of a Square Wire Loop (with a changed segment)

    I tried to solve the above i have one confusion here. I have marked the areas as shown B2 = B4 = 0; B1 , B5 Out of Page ; B3, B6 Into the Page. B1 and B5 Calculation Now main doubt is regarding the B field of the finite wire let us say 1. I took the derivation of the infinite wire as below from...
  23. Saptarshi Sarkar

    How to Calculate Relativistic Momentum Using M, m, and c?

    The answer is required to be in terms of M,m and c only. But, I am not able to calculate the momentum of the m mass particle using the above two. Can anyone help me by telling me what I am missing?
  24. N

    A Calculation of amplitude with n=5, k=3 using the book by Arkani-Hamed et al

    This is a pretty technical question so before I post all the details, let me first ask if someone might be able to help. I am going over the book Grassmannian Geometry of Scattering Amplitudes and I am trying to calculate the anti MHV amplitude with five particles, at tree level (or...
  25. E

    B Clarification of Romer's Calculation

    Please see the below diagram. I make the assumptions that the orbit of Jupiter around the sun is fairly unimportant for this problem, and that the period of Io is also much smaller than that of the Earth. I also assume everything is nice and circular and in the same plane. The intervals...
  26. Y

    Primary calculation involving the Dirac gama matrices

    When working on the exercise 3.2 of Peskin's QFT, I find one of the calculating steps confused for me. I read the solution, which is showed in the picture. I just don't understand the boxed part. I know it involved the Dirac equation, and the solution seems to treat the momentum as a operator...
  27. M

    I Scaling covariance for an error calculation

    Hello! I just discovered (maybe a bit late) that most fitting programs (Python lmfit or scipy, for example) have a parameter (by default turned on) that allows a scaling of the covariance matrix for calculating the errors (usually called scale_covar or something similar). After some reading I...
  28. L

    I Momentum and energy calculation in special relativity

    ## \ \ \ \ \ ##In ##K##,System ##M## is composed of a spring ## N ## and four particles ## P, Q, A and B ##. The ends of spring ## N ## are fixedly connected with particles ## P and Q ## respectively. Particle ## A ## is adjacent to particle ## P ##, and particle ## B ## is adjacent to particle...
  29. D

    Sig figs/certainty in percent error calculation

    Hello, all. Quick question about how to apply sig figs in percent error problems. Eg. If the actual/target value is 1.95 g and we measure 1.87 g, then should the percent error of our measurement be reported as 4.10% or 4%? Normally, at least abstracting from the problem, after subtracting...
  30. abeeba

    Freeware for Nanoantenna Calculation

    Anyone know any free software for nanoantenna performance calculation?
  31. fisher garry

    E field calculation for q sphere

    I have some questions about this answer. Why do they use absolute value when writing in the limits in the integral underlined with orange? And how do they get from this value where I have underlined with orange to the answer for E outside the sphere. Can someone do the rewriting? And last why is...
  32. B

    Hydrogen emission spectrum calculation

    I've first method I tried was using f = v/λ to find the frequency, then E = hf to find the energy and then using E = (-13.6eV/n^2) - (-13.6eV/n^2) to rearrange and solve for the unknown n. However I got 5, the same as the original entry level. I also tried using 1/λ = R(1/4 - 1/n^2) to solve...
  33. marielescobal

    Calculation of bond length using Raman spectra

    Hi, I really need your help. Suppose I have a Raman spectra of a hydroxyapatite, how do I calculate the bond length from the spectra? I've been trying to understand the concept of Badger's rule but I really cannot understand. Please help.
  34. D

    Understanding the Negative Sign in Laser Linewidth Calculation

    Hi guys, It's one of the questions I'm asking myself needlessly but I really wonder about this ;) Say I have a laser at a wavelength λ. I can calculate the frequency by ν=c/λ. Then the linewidth Δν=cΔλ/λ2 that can be found through differentiation of two sides of the equation. The question is...
  35. arcTomato

    I I would like to know the calculation process of this power spectrum

    Summary: Derive the formula of power spectrum from Discrete Fourier Transform. Hi all I don't know where should I post this, so if I am wrong, I apologize.(But this is almost math problem so ) I would like to know the calculation process when derive Eq(6.3) in this paper. Eq 2.4a is...
  36. P

    Can I Build My Own Tree Limbing Boom System?

    Hi all, I was hoping a guy with limited engineering skills might find a little help and understanding... I'm not formally trained but am somewhat mechanically inclined. I build things, and usually have good luck estimating strengths and designing things without doing the math or science behind...
  37. K

    A Martingale, calculation of probability - Markov chain needed?

    I am trying to estimate probability of loosing (probability of bankrupt ##Pb##) using Martingale system in betting. I will ilustrate my problem on the following example: Let: ##p## = probability of NOT getting a draw (in some match) We will use following system for betting: 1) We will bet only...
  38. E

    A How do I calculate the cross section for W+W->gamma>l+ l- at the tree level?

    Can anyone help me about cross section calculation of W+W->gamma>l+ l- (leptons), at the tree level? I am stuck to writing amplitude,after written Feynman rules, because of massive vector boson polarization states. How should I do?
  39. Alexandra Fabiello

    Force Calculation: Incorrect Result

    force = 4.2e7 J/90 m = 466666.6667 N this minus 2.10e5 = 2.57e5 N rounded This is incorrect, so I'm probably missing a formula or something.
  40. S

    MHB Probability calculation of dependent events with limitations

    Dear forum, First time posting and as English is not my native language, I'd like to apologize in advance for any linguistic errors I make. Yesterday, I received a case which sounded really easy to calculate but for some reason I can't get my head around it. This is the case: In a shipping...
  41. Addez123

    How can air density be accurately calculated at different altitudes?

    Just calculating D1 (15km altitude plane) and D2 (7.5km altitude plane) turns out to; D1/D2 = 4*p1/p2 p being the air density at each height. How am I suppose to calculate p? We have had no such formulas, not to mention it depends on temprature etc. Doing a linear estimation will yield wrong...
  42. M

    Ιntegral calculation : (sin(x))^4 * (cos(x))^6

    Summary: Ιntegral calculation : (sin(x))^4 * (cos(x))^6 Hi all, I tried to solve it, but I got stuck. An advice from my professor is to set: x=arctan(t) Τhanks.
  43. nomadreid

    I Tensor calculation, giving|cos A|>1: how to interpret

    On pages 42-43 of the book "Tensors: Mathematics of Differential Geometry and Relativity" by Zafar Ahsan (Delhi, 2018), the calculation for the angle between Ai=(1,0,0,0) (the superscript being tensor, not exponent, notation) and Bi=(√2,0,0,(√3)/c), where c is the speed of light, in the...
  44. S

    Chemistry Calculation of average molecular speed

    We can calculate the average speed using this formula: uavg=root(8PV/ΠnM) I plugged in the following values: P= pi*10 atm (bar is approximately equal to atm) V=8lts n=2mol M=32*10^-3kg/mol But it is giving wrong answer. Can you tell me what went wrong?
  45. L

    Need help with a force calculation (deformation of a cylinder)

    Trying to calculate the force required to deform a cross section of a solid cylinder. To create an image, imagine a cylinder laying on a flat surface, and then a section of it defined as a length of X, being subjected to a compressive load. I'm trying to find the correct formula for this. Any...
  46. S

    What is the approximate pressure at the center of a cool Earth with no gravity?

    The basic barometric formula for calculating atmospheric pressure is (Ph: pressure at height h) = (Pzero: pressure at height zero) x exp(-mgh/kT), where the height h unit is meters, P unit is pascals, m is the mass of an average "air" molecule, g is the acceleration of gravity, k is the...
  47. J

    Winding a toroid inductor, is this calculation correct?

    Hi, I am going to wind an tapped toroid inductor for a LCR circuit in an equalizer. I have calculated the number of turns I need for each winding. This is my first time winding an inductor so I need to get some things straight. What to do with the 10 kHz tap, should I twist a wire with the 12...
  48. D

    MCNP6.2: F2 tally and problem with the area calculation

    Hello, after many simplifications my geometry has become very simple: just a box of concrete with a cylinder of steel inside. The source is outside in the air. The cell and the surface cards are like the following: C ******************Block 1: Cells********************** 100 0 99 imp:p=0 99 1...
  49. A

    A Calculation of Fourier Transform Derivative d/dw (F{x(t)})=d/dw(X(w))

    Calculation of Fourier Transform Derivative d/dw (F{x(t)})=d/dw(X(w)) Hello to my Math Fellows, Problem: I am looking for a way to calculate w-derivative of Fourier transform,d/dw (F{x(t)}), in terms of regular Fourier transform,X(w)=F{x(t)}. Definition Based Solution (not good enough): from...
Back
Top