This is just a bare list of all the articles. For an overview with snippets and images, go to the home page or pick one of the tags in the side bar.
- How to Use Functions with the OpenAI API
- "ChatGPT" from the Command Line
- How to Access the OpenAI API from Python
- Phyphox
- Basic Python Scripts to Save and Load Images
- What is an Engel Expansion?
- Basic Python Scripts to Save and Load Audio Files
- How to Tweet from Python
- TomRoelandts.com in 2021
- Cherenkov Radiation
- Reconstruction of a Real Dataset, Part 4: The Actual Reconstruction
- Reconstruction of a Real Dataset, Part 3: Conversion to Projections
- Reconstruction of a Real Dataset, Part 2: Flat Field Correction
- Reconstruction of a Real Dataset, Part 1: Introduction
- TomRoelandts.com in 2020
- What is a Voronoi Diagram?
- How to Add Noise to Set a Digital Communications Signal to a Given Es/N0
- Fractional Approximations of Pi
- Why Are Leap Years Needed?
- TomRoelandts.com in 2019
- There's Only One Parabola
- What is Steganography?
- How to Create a Fractional-Delay Filter
- Antegooglewhackblatt
- Mapping Bits to a Constellation
- Langton's Ant
- What is a Constellation Diagram?
- This Person Does Not Exist
- What is an Analytic Signal?
- Modems
- One Code to Run Them All (Python 2 and Python 3)
- How Does Phase-Shift Keying Modulation Work?
- TomRoelandts.com in 2018
- Old Style Linear Regression with TensorFlow
- ASTRA Toolbox Tutorial: Reconstruction from Projection Images, Part 2
- ASTRA Toolbox Tutorial: Reconstruction from Projection Images, Part 1
- Symbolic Math in Python
- Turtle Graphics in Python
- Applying a Filter in Both Directions Makes it Zero Phase
- How to Create Animated GIFs with Python
- How to Compute Colorful Fractals using NumPy and Matplotlib
- How to Compute the Mandelbrot Set using NumPy Array Operations.
- Apply a Filter Twice for Greatly Improved Performance
- What Is a Quine?
- The Phase Response of a Filter
- Why use Symmetrical FIR Filters with an Odd Length?
- TomRoelandts.com in 2017
- ʻOumuamua
- What is a Hadamard Matrix?
- Jerk
- How to Plot the Frequency Response of a Filter
- The Birthday Paradox
- Exponentiation by Squaring
- Randomness Explains Flat Tire Anecdotes Perfectly Well
- TomRoelandts.com in 2016
- How to Create a Configurable Filter Using a Kaiser Window
- The Transition Bandwidth of a Filter Depends on the Window Type
- Some Mathematics Behind "Catching Them All"
- The Radio Meteor Signal Path from Transmitter to Spectrogram, Part 3
- The Radio Meteor Signal Path from Transmitter to Spectrogram, Part 2
- Radio Meteor Zoo
- The Radio Meteor Signal Path from Transmitter to Spectrogram, Part 1
- Why is Eb/N0 the Natural Figure of Merit in Digital Communications?
- Gravitational Waves, a New Observational Window on the Universe
- Spectral Reversal to Create a High-Pass Filter
- The Moving Average in the Financial Sector
- Low-Pass Single-Pole IIR Filter
- Variations on the Moving Average
- HTTPYES
- TomRoelandts.com in 2015
- Time Domain vs. Frequency Domain Performance of Filters
- The Moving Average as a Filter
- The Diverging Color Map Is the New Rainbow Color Map
- Tomography Demo
- The Hubble eXtreme Deep Field
- Are there Infinitely Many Twin Primes?
- Filter Designer
- If You See a Fireball, Please Report It
- Normalized Frequency For The Win
- Why Clipping Should Be Avoided
- TomRoelandts.com in 2014
- New Horizons
- How Does Frequency Modulation Work?
- How Does Amplitude Modulation Work?
- Meteor Detection for BRAMS Using Only the Time Signal
- The Wow! Signal, Still a Mystery After 37 Years
- The PDART Algorithm, Part 2
- The PDART Algorithm, Part 1
- Why Did this Image Cause a Traffic Spike on TomRoelandts.com?
- The SIRT Algorithm
- Rosetta
- Compressed Sensing
- How to Create Simple Band-Pass and Band-Reject Filters
- How to Create a Simple High-Pass Filter
- How to Create a Simple Low-Pass Filter
- Introducing Clippy! (April Fools’ joke)
- Simulating a Geiger Counter
- The Clustering Illusion
- Tomography Challenge
- Do Not Ignore the ASTRA Toolbox!
- Valentine Filtering
- Impulse Response Logo: The Making Of
- Gaussian Noise is Added, Poisson Noise is Applied
- TomRoelandts.com in 2013
- Why is Deconvolution Difficult?
- How is the Size of A4 Paper Determined?
- What is a Spectrogram?
- Naive Square Wave
- Finite-Bandwidth Square Wave in Samples
- Finite-Bandwidth Square Wave
- Color PSFs
- Some Wacky Pinholes and Their PSF
- The PSF of a Pinhole Camera
- The Perfect Camera
- Impulse Response
- Discrete-Time Signal Processing
- Going Responsive
- Exponential Growth
- How to Record a Lion in a Concert Hall
- Earth-Moon System Scale Model
- Earth-Moon System to Scale
- Astrology For Teh Win! (This was an April Fools’ joke, I’ve not gone completely crazy…)
- Pi Day 2013
- The Looming Effect
- Valentine Tomography
- Skill Bubbles
- How to Ensure that Visitors Always See Cached Pages in Drupal 7
- 7 Cool Reference Sites on Mathematics
- Skirmish with Spam
- Tomography, Part 4: Algebra!
- Tomography, Part 3: Reconstruction
- Tomography, Part 2: Yes, You Can
- Tomography, Part 1: Projections
- Designer QR Codes
- To the Guys that Stole My Car
- Pinhole Size Calculator
- The Spectacular Landing of Curiosity
- Lena
- Fractal Dimension
- Mandelbrot Set
- Fractint
- Where to Launch Your Rocket?
- Infinity and Beyond
- Euler's Identity
- Color QR Codes Done Right
- Mars Science Laboratory
- Fade to Gray
- QR Codes
- Beware of Silently Assuming Linear Intensity in Astronomical Images
- What's in a Distance
- The Harmonic Series
- The Greatest Physics Experiment Ever, Live in Your Browser
- Formulas Ahead!
- Pinhole Photography