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Classical and quantum mechanics, electricity and magnetism, thermodynamics, high-energy and particle physics, condensed matter physics, biophysics.... Astronomy and optics are separate categories.

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Optimal lighting configuration of 5 lamps in a square room

QUESTION FROM: Todd Rowland | 12 years ago BY: Todd Rowland
Architecture , Challenges , Engineering , Mathematics , Optics , ...
12
REPLIES
43.4K
VIEWS

Simulating mechanics of a cylinder rolling on a parabola

QUESTION FROM: Jef Barthe | 12 years ago BY: Erik Mahieu
Engineering , Mathematica , Physics , SystemModeler
12
REPLIES
39.3K
VIEWS

Modeling jump conditions in interphase mass transfer

QUESTION FROM: Tim Laska | 6 years ago BY: Anonymous User
Staff Picks , Calculus , Chemical Engineering , Chemistry , ...
19
REPLIES
38.6K
VIEWS

Why are some professors negative on Mathematica?

QUESTION FROM: Luther Nayhm | 10 years ago BY: David J M Park Jr
Calculus , Mathematica , Physics , Wolfram Language
31
REPLIES
35.3K
VIEWS

Modeling a Trebuchet

QUESTION FROM: Varun Kulkarni | 9 years ago BY: Frederick Wu
Modeling , Numerical Computation , Physics , Wolfram Language
28
REPLIES
34.9K
VIEWS

Mathematica for General Relativity and Gravity research

QUESTION FROM: Boris Latosh | 11 years ago BY: Frank Kampas
Astronomy , Mathematica , Mathematics , Physics , Wolfram Language
10
REPLIES
33.7K
VIEWS

How can I fit a gaussian function to data in Mathematica? (no distribution)

QUESTION FROM: Thomas H | 10 years ago BY: Thomas H
Data Science , Mathematica , Physics
5
REPLIES
30.6K
VIEWS

How to use the Wolfram|Alpha time dilation calculator on Black Holes?

QUESTION FROM: Jack M | 7 years ago BY: Joseph Wiese
Astronomy , Mathematics , Physics , Wolfram|Alpha
9
REPLIES
29K
VIEWS

Plotting bifurcation diagrams using Mathematica

QUESTION FROM: Omer Tzuk | 10 years ago BY: Sean Clarke
Graphics and Visualization , Mathematica , Physics , Wolfram Language
1
REPLIES
28.7K
VIEWS

My program has been running for two days. Is this normal?

QUESTION FROM: Hui Sun | 10 years ago BY: Hui Sun
Aerospace Engineering , Mathematics , Mechanical Engineering , Physics
10
REPLIES
28.3K
VIEWS

Hodgkin-Huxley cable equation or propogation equation

QUESTION FROM: Jake Trexel | 12 years ago BY: Jake Trexel
Biological Sciences , Equation Solving , Mathematics , Physics , ...
18
REPLIES
27.6K
VIEWS

Recorded accelerometer data to PSD plot?

QUESTION FROM: George Thiel | 10 years ago BY: Caitlin Ramsey
Aerospace Engineering , Civil Engineering , Engineering , ...
3
REPLIES
26.1K
VIEWS

Mathematica gives absolutely no output

QUESTION FROM: Nathan Lundholm | 10 years ago BY: George Woodrow III
Astronomy , Physics
3
REPLIES
24.9K
VIEWS

The quantity is not a quantified system of equations and inequalities

QUESTION FROM: Giovanni Ferdina | 10 years ago BY: Giovanni Ferdina
Aerospace Engineering , Chemical Engineering , Civil Engineering , ...
3
REPLIES
24.8K
VIEWS

Finding the actual wind power at a location for a given period?

QUESTION FROM: Daniel Connell | 9 years ago BY: Nicholas Teague
Environmental Science , Mathematics , Numerical Computation , ...
5
REPLIES
24.3K
VIEWS

Best general relativity / Mathematica code book?

QUESTION FROM: John Mercer | 4 years ago BY: Keith Dow
Physics , Wolfram Language
6
REPLIES
23.9K
VIEWS

How to plot {x,y,z,i} data?

QUESTION FROM: Anna Regoutz | 12 years ago BY: Darya Aleinikava
Chemistry , Graphics and Visualization , Mathematica , Physics
10
REPLIES
23.6K
VIEWS

Possible to model crystal growth with cellular automata?

QUESTION FROM: Katherine Derbyshire | 8 months ago BY: Updating Name
Material Sciences , Mathematica , Physics , Wolfram Science
7
REPLIES
23.2K
VIEWS

Solve differential equation to describe the motion of simple pendulum

QUESTION FROM: Julian Lovlie | 8 years ago BY: Javier Gonzalez-Rocha
Engineering , Mathematica , Physics
7
REPLIES
22.8K
VIEWS

Triple integrals in wolframalpha

QUESTION FROM: Adriana Zerbini | 10 years ago BY: Adriana Zerbini
Calculus , Mathematics , Physics , Wolfram|Alpha
2
REPLIES
22.4K
VIEWS

Distance between 2 flat molecules

QUESTION FROM: A Y | 11 years ago BY: Mohammad Khan
Chemistry , Geometry , Mathematica , Mathematics , Physics , ...
13
REPLIES
22.2K
VIEWS

[?] Calculate moment of inertia from STL?

QUESTION FROM: Daniel Marsden-Jones | 8 years ago BY: Daniel Marsden-Jones
Mathematics , Mechanical Engineering , Physics , ...
3
REPLIES
22.1K
VIEWS

resolution of an equation

QUESTION FROM: abddellatif loua | 9 years ago BY: abddellatif loua
Calculus , Equation Solving , Group Theory , Optimization , ...
14
REPLIES
21.9K
VIEWS

Model the Coffee cooling problem with WSM?

QUESTION FROM: Gary Bass | 8 years ago BY: Gary Bass
Education , Modeling , Physics , SystemModeler
10
REPLIES
21.2K
VIEWS

Save the interpolation function that is a result of NDsolve?

QUESTION FROM: Markus Schmidt | 5 years ago BY: Tony Coliderse
Calculus , Equation Solving , Mathematics , Modeling , ...
14
REPLIES
21K
VIEWS

Singularity problem in “NDSolve” in Mathematica

QUESTION FROM: moumita das | 12 years ago BY: Frank Kampas
Equation Solving , Mathematica , Physics
3
REPLIES
20.4K
VIEWS

Functional Programming for Non-linear Equations

QUESTION FROM: Pat Mac | 12 years ago BY: Pat Mac
Biological Sciences , Chemistry , High-Performance Computing , ...
4
REPLIES
20.2K
VIEWS

Numerical solution of one dimensional Schrodinger equation

QUESTION FROM: Mojtaba M | 11 years ago BY: Michael Hale
Calculus , Mathematica , Numerical Computation , Physics , ...
4
REPLIES
20.1K
VIEWS

How to delete all output cell by one click ?

QUESTION FROM: Yoshihiro Sato | 11 years ago BY: Yoshihiro Sato
Physics , Wolfram Cloud
5
REPLIES
19.9K
VIEWS

Philosophy of Time

QUESTION FROM: Barry Silverman | 2 years ago BY: Jarek Duda
Physics , Wolfram Fundamental Physics Project , Wolfram Science
11
REPLIES
19.5K
VIEWS

Problems with 'Recursion depth of 1024 exceeded during evaluation of '.

QUESTION FROM: Alexandre AZIER | 9 years ago BY: Otto Linsuain
Mathematics , Physics , Signal Processing , Wolfram Language
2
REPLIES
19.5K
VIEWS

Radians as Dimensionless Unit?

QUESTION FROM: Eric Hudson | 6 years ago BY: Francisco Rodríguez
Physics , Units , Wolfram Language
10
REPLIES
19.4K
VIEWS

Simple Math Problem Shows Massive Flaw In All Machine Learning Algorythims

QUESTION FROM: David Johnston | 10 years ago BY: David Johnston
Computer Science , Data Science , Discrete Mathematics , ...
3
REPLIES
19.1K
VIEWS

New to Wolframalpha, need to teach with it

QUESTION FROM: Lesa Kean | 10 years ago BY: Frank Kampas
Algebra , Calculus , Education , Mathematica , Mathematics , ...
2
REPLIES
18.9K
VIEWS

Double pendulum in Mathematica

QUESTION FROM: Jonatan M?czy?ski | 7 years ago BY: Raspi Rascal
Demonstrations , Mathematica , Physics , Wolfram Language
5
REPLIES
18.8K
VIEWS

Solve the Nonlinear Schroedinger Equation with NDSolve?

QUESTION FROM: Markus Schmidt | 7 years ago BY: Markus Schmidt
Equation Solving , Mathematica , Modeling , Numerical Computation , ...
16
REPLIES
18.8K
VIEWS

Where are notebooks for "Classical Mechanics with Mathematica", 2nd ed?

QUESTION FROM: Murray Eisenberg | 4 years ago BY: Raspi Rascal
Authoring and Publishing , Mathematica , Mathematics , Physics , ...
10
REPLIES
18.7K
VIEWS

Advice on Wolfram Products for my website

QUESTION FROM: sihle mgobozi | 12 years ago BY: sihle mgobozi
Algebra , Calculus , Chemistry , Demonstrations , Mathematics , ...
3
REPLIES
18.2K
VIEWS

SystemModeler Failed to reduce the DAE index. What do I do now?

QUESTION FROM: nick Granger-Brown | 12 years ago BY: nick Granger-Brown
Engineering , Physics , SystemModeler
3
REPLIES
18.1K
VIEWS

use of the $ symbol

QUESTION FROM: Luis Ledesma | 12 years ago BY: Jari Kirma
Authoring and Publishing , Computer Science , Data Science , ...
4
REPLIES
18K
VIEWS

Create a color gradient using a variable?

QUESTION FROM: John Wick | 5 years ago BY: Hans Dolhaine
Graphics and Visualization , Physics , Wolfram Language
39
REPLIES
17.7K
VIEWS

Animate quantum wave plot

QUESTION FROM: Max Fischer | 11 years ago BY: Humberto Munoz Bauza
Calculus , Graphics and Visualization , Mathematica , Physics
14
REPLIES
17.7K
VIEWS

Bottlenecking Code

QUESTION FROM: Jake Smith | 11 years ago BY: Michael Rogers
Mathematica , Numerical Computation , Physics , Tuning and Debugging
2
REPLIES
17.6K
VIEWS

Simultaneous fitting to multiple data sets with multiple variables and para

QUESTION FROM: Arijit Sharma | 11 years ago BY: Arijit Sharma
Engineering , Image Processing , Mathematics , Modeling , Optics , ...
2
REPLIES
17.5K
VIEWS

Integrate will not evaluate three-dimensional gaussian

QUESTION FROM: C. E. Coppola | 11 years ago BY: W. Craig Carter
Astronomy , Chemical Engineering , Computer Science , Data Science , ...
8
REPLIES
17.5K
VIEWS

Imperfect Bose gas nonlinear Schroedinger type ODE numerical solution

QUESTION FROM: Mattia Udina | 10 years ago BY: Michael Trott
Calculus , Mathematics , Numerical Computation , Physics , ...
37
REPLIES
17.3K
VIEWS

Help needed with code optimization in Manipulate

QUESTION FROM: Luca M | 12 years ago BY: Luca M
Dynamic Interactivity , Graphics and Visualization , Mathematica , ...
7
REPLIES
17.2K
VIEWS

List all build-in physical constants in Mathematica 11.3?

QUESTION FROM: Sascha Tayefeh | 6 years ago BY: Sascha Tayefeh
Curated Data , Mathematica , Physics , Wolfram Language
10
REPLIES
17.1K
VIEWS

Fitting a function - the result of a NDSolve

QUESTION FROM: Elwood Blues | 12 years ago BY: Bruce Miller
Computer Science , Data Science , Education , Material Sciences , ...
1
REPLIES
17K
VIEWS

Insert or Joint a element in a table

QUESTION FROM: margherita ferrucci | 10 years ago BY: David Gathercole
Civil Engineering , Education , Engineering , Finance , ...
7
REPLIES
16.9K
VIEWS

Define functions for variables with units?

QUESTION FROM: Orest Gogosha | 7 years ago BY: Ian Williams
Mathematics , Physics , Units , Wolfram Language
15
REPLIES
16.9K
VIEWS

Block-diagonalization of a real skew-symmetric matrix

QUESTION FROM: Luca Taddia | 12 years ago BY: Luca Taddia
Mathematica , Mathematics , Physics
8
REPLIES
16.8K
VIEWS

Determine intensity for each pixel in an image by digitizing/binning it?

QUESTION FROM: Maurice Stancil | 9 years ago BY: EDITORIAL BOARD
Engineering , Image Processing , Optics , Physics , Wolfram Language
9
REPLIES
16.8K
VIEWS

How to create a drawing pad in Mathematica?

QUESTION FROM: Boris Blankleider | 12 years ago BY: Vitaliy Kaurov
Dynamic Interactivity , Graphics and Visualization , ...
7
REPLIES
16.7K
VIEWS

Interactive Physics simulation software with Wolfram Language?

QUESTION FROM: Ch' Prof | 9 years ago BY: W. Craig Carter
Computer-Based Maths , Dynamic Interactivity , Education , Physics , ...
10
REPLIES
16.7K
VIEWS

polar contour plot

QUESTION FROM: Soutik Sur | 10 years ago BY: Soutik Sur
Engineering , Mathematics , Optics , Physics
2
REPLIES
16.7K
VIEWS

Parallelization and NMinimize

QUESTION FROM: Yves Journaux | 11 years ago BY: W. Craig Carter
Chemical Engineering , Chemistry , Computer Science , ...
1
REPLIES
16.7K
VIEWS

How to solve a system of Non-linear equations

QUESTION FROM: Marcelo De Cicco | 11 years ago BY: Marcelo De Cicco
Mathematica , Physics
19
REPLIES
16.6K
VIEWS

Collaboration needed: Program Human Bio Machine Interfaces

QUESTION FROM: John Remillard | 4 years ago BY: William Duhe
Biological Sciences , Jobs & More Exchange , Mathematics , ...
5
REPLIES
16.6K
VIEWS

Ideas for a physics-based Mathematica project?

QUESTION FROM: Liam Walker | 11 years ago BY: Sam Carrettie
Astronomy , Education , Mathematica , Physics , Wolfram Language
3
REPLIES
16.5K
VIEWS

Fourier Series of function defined with conditional statement

QUESTION FROM: Kaushik Mallick | 10 years ago BY: Kaushik Mallick
Calculus , Mathematica , Mathematics , Mechanical Engineering , ...
15
REPLIES
16.5K
VIEWS

Numerical fitting to model that has Integral with no analytical solution

QUESTION FROM: Nick D | 12 years ago BY: Nick D
Calculus , Data Science , Engineering , Material Sciences , ...
3
REPLIES
16.5K
VIEWS

RunScheduledTask outputting more data than programmed to

QUESTION FROM: Alexis Ploss | 10 years ago BY: Alexis Ploss
Education , Import and Export , Mathematica , Physics , ...
2
REPLIES
16.5K
VIEWS

[?] Solve this system of equations with some assumptions?

QUESTION FROM: Joe Ford | 7 years ago BY: Daniel Lichtblau
Equation Solving , Mathematics , Physics , Symbolic Computations , ...
3
REPLIES
16.3K
VIEWS

How to do a 3d graph rotation on gpu rather than cpu?

QUESTION FROM: Viacheslav Shishlov | 11 years ago BY: Bruce Miller
Data Science , External Programs and Systems , Image Processing , ...
1
REPLIES
16.1K
VIEWS

Plotting the wavefunctions for the hydrogen atom with Wolfram Alpha

QUESTION FROM: Maria Dimitrova | 10 years ago BY: S M Blinder
Graphics and Visualization , Physics , Wolfram|Alpha
1
REPLIES
16.1K
VIEWS

How to access Physical Constants in Mathematica 9.0?

QUESTION FROM: nick Granger-Brown | 11 years ago BY: nick Granger-Brown
Mathematica , Physics , Wolfram Language
3
REPLIES
15.9K
VIEWS

Simulate a full car model in SystemModeler?

QUESTION FROM: Saravanan N | 8 years ago BY: Neil Singer
Control Systems , Engineering , Mechanical Engineering , Modeling , ...
4
REPLIES
15.8K
VIEWS

Generate weighted random numbers

QUESTION FROM: Michael Knoerzer | 2 years ago BY: Jari Kirma
Data Science , Mathematica , Mathematics , Physics , ...
13
REPLIES
15.7K
VIEWS

Using NonlinearModelFit for complex data ?

QUESTION FROM: Christian Neel | 9 years ago BY: Gale Bradfield
Data Science , Engineering , Mathematics , Physics , ...
4
REPLIES
15.5K
VIEWS

How do I use NDSolve within a Do loop?

QUESTION FROM: Henry Banks | 11 years ago BY: Michael Rogers
Equation Solving , Mathematica , Mathematics , ...
6
REPLIES
15.5K
VIEWS

How to remove Ticks from a BarChart3D and put z axis

QUESTION FROM: Francesco Graffitti | 9 years ago BY: Gary Palmer
Data Science , Engineering , Mathematics , Optics , Physics
2
REPLIES
15.4K
VIEWS

Can NonlinearModelFit consider the error parameters dependent ?

QUESTION FROM: Maria Giovanna Dainotti | 11 years ago
Aerospace Engineering , Astronomy , Computer Science , Data Science , ...
0
REPLIES
15.3K
VIEWS

Confused about ReleaseHold & Defer

QUESTION FROM: T Saab | 12 years ago BY: EDITORIAL BOARD
Computable Document Format , Demonstrations , Mathematica , Physics , ...
1
REPLIES
15.3K
VIEWS

[?] Import and Plot a (5 x a) Matrix from a csv file in Mathematica?

QUESTION FROM: Epsilon Tau | 8 years ago BY: Epsilon Tau
Graphics and Visualization , Import and Export , Mathematics , ...
3
REPLIES
15.3K
VIEWS

Virtual Wind Tunnel?

QUESTION FROM: Ray Hill | 10 years ago BY: Balazs Kisfali
Engineering , Graphics and Visualization , Physics , SystemModeler , ...
5
REPLIES
15.3K
VIEWS

Combine Plot Graphics

QUESTION FROM: Simon Tyran | 12 years ago BY: Narasimham gudipaty
Astronomy , Data Science , Image Processing , Mathematics , Physics , ...
3
REPLIES
15.2K
VIEWS

How to find Laplace Transform

QUESTION FROM: John G | 12 years ago BY: John G
Mathematics , Physics , Wolfram Language
2
REPLIES
15.2K
VIEWS

While loop syntax in Mathematica 9

QUESTION FROM: Cole Pierson | 12 years ago BY: Richard Hennigan
Aerospace Engineering , Calculus , Engineering , Mathematica , ...
2
REPLIES
15.2K
VIEWS

Working with lists - comparing data in lists of unequal length.

QUESTION FROM: David Kirkby | 6 years ago BY: M.A. Ghorbani
Data Science , Engineering , Modeling , Physics , ...
17
REPLIES
15.2K
VIEWS

Piecewise function

QUESTION FROM: Philip Majnooni | 11 years ago BY: David Keith
Aerospace Engineering , Civil Engineering , Control Systems , ...
4
REPLIES
15.1K
VIEWS

What is the best way to learn GR with Mathematica as an undergrad?

QUESTION FROM: Mike Reynolds | 10 years ago BY: David J M Park Jr
Packages , Physics , Wolfram Language
6
REPLIES
15K
VIEWS

Need help importing data from a file.

QUESTION FROM: Nathan Lundholm | 10 years ago BY: Bill Lewis
Aerospace Engineering , Astronomy , Mathematics , Physics
6
REPLIES
14.9K
VIEWS

Multiplying 4x4 matrices with complicated elements - taking long time

QUESTION FROM: Eleanor Holmes | 9 years ago BY: Eleanor Holmes
Equation Solving , High-Performance Computing , Optimization , ...
35
REPLIES
14.8K
VIEWS

[?] Solve the Kronig Penney model determinant?

QUESTION FROM: John Tiessen | 5 years ago BY: Dan Lawrence
Equation Solving , Mathematics , Physics , Symbolic Computations , ...
8
REPLIES
14.8K
VIEWS

how to use the "For" here

QUESTION FROM: YU SHANG | 10 years ago BY: YU SHANG
Data Science , Mathematica , Numerical Computation , Physics , ...
7
REPLIES
14.8K
VIEWS

Plotting projections of 4D objects into 3D

QUESTION FROM: Bryan Lettner | 10 years ago BY: Henrik Schachner
3D Printing , Calculus , Engineering , Geometry , ...
2
REPLIES
14.7K
VIEWS

Trying to simulate electric field lines from collection of point charges

QUESTION FROM: Amy Zimmerman | 11 years ago BY: David Keith
Mathematica , Physics
2
REPLIES
14.7K
VIEWS

Simulate the motion of the Earth around the Sun based on Kepler's Law?

QUESTION FROM: Senlau Minto | 7 years ago BY: Senlau Minto
Astronomy , Equation Solving , Mathematics , Modeling , Physics , ...
13
REPLIES
14.5K
VIEWS

How do I combine 3 lists into one 3d list?

QUESTION FROM: Nathan Lundholm | 10 years ago BY: Gianluca Gorni
Aerospace Engineering , Astronomy , Discrete Mathematics , ...
5
REPLIES
14.4K
VIEWS

Question about Fourier Coefficents

QUESTION FROM: Ke Zheng | 12 years ago BY: Udo Krause
Mathematics , Mechanical Engineering , Optics , Physics
3
REPLIES
14.4K
VIEWS

Where I can find the code for Volterra Integral Equation of the Second Kind

QUESTION FROM: jabir Hakami | 10 years ago BY: jabir Hakami
Engineering , Mathematics , Physics , Wolfram Language
9
REPLIES
14.3K
VIEWS

Solving Shrodinger equation for Hydrogen molecular Ion

QUESTION FROM: Giorgio Ripani | 10 years ago BY: S M Blinder
Chemistry , Equation Solving , Mathematica , Mathematics , Physics
2
REPLIES
14.1K
VIEWS

Solve 2 coupled 2nd ODEs and plot them with ParametricPlot?

QUESTION FROM: Soumen Basak | 6 years ago BY: Soumen Basak
Calculus , Computational Systems , Equation Solving , ...
14
REPLIES
14.1K
VIEWS

What's wrong with my code? Code and error are in the message.

QUESTION FROM: Nathan Lundholm | 10 years ago BY: Nathan Lundholm
Aerospace Engineering , Astronomy , Discrete Mathematics , ...
4
REPLIES
14.1K
VIEWS

Graphics 3D, Rendering, Animation, and Physics

QUESTION FROM: Russell Hart | 12 years ago BY: Markus Schopfer
Computer Science , Game Development , Image Processing , ...
1
REPLIES
14.1K
VIEWS

Will W|A answer "What would happen to the solar system if Earth vanished?"

QUESTION FROM: Shaun Coyne | 9 years ago BY: Marco Thiel
Astronomy , Modeling , Physics , Wolfram|Alpha
4
REPLIES
14.1K
VIEWS

Fitting of a data set with a known equation

QUESTION FROM: S G | 10 years ago BY: Frank Kampas
Engineering , Material Sciences , Physics
4
REPLIES
14K
VIEWS

Can you use Mathematica to take notes in your study?

QUESTION FROM: Dennis Müller | 10 years ago BY: Bill Lewis
Mathematica , Physics , Wolfram Language
1
REPLIES
14K
VIEWS

How to use Reduce to find com

QUESTION FROM: Omer Tzuk | 10 years ago BY: Nasser M. Abbasi
Algebra , Calculus , Mathematica , Mathematics , Physics , ...
3
REPLIES
13.8K
VIEWS
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1352 Discussions

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7 days ago
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