Roadmap

One of the best things about the internet in the late 2000s (that got me hooked on it) was how the content was raw, unpolished but yet crazy and unique. This series began in the early 2010s as a humble attempt to manually curate a network (a 'roadmap') with interesting content from the internet over the years, along with my own contributions and commentary as needed.

* Please report any broken links in the comments. Post submissions welcome.

Legend: 🎥 - Video |  

Physics and Mathematics

1. E&M
1. Visualizing standing waves in a microwave - I
1. 🎥 Visualizing standing waves in a microwave 
2. 🎥 Water is Diamagnetic: A simple experiment  
2. Mathematics
1. A note on what makes solutions discretized?
2. Finding n roots of unity 
3.  🎥 The humanity of calculus | Jim Fowler | TEDxColumbus  
4.  Tangential and radial components of acceleration using complex numbers 
5.  The Bernoulli Family  
6. Beautiful proofs (#4) - When Gauss was a young child... 
7. A short note on how to interpret Fourier Series animations 
3. Optics 
1. Diffraction Grating 
2. A classy refraction gif  
3. Total Internal Reflection with a laser and a wine glass 
4. Demonstrating Ray Diagrams 
4. Astronomy
1. 🎥 How to use the hubble legacy archive (HLA) - 101  
2. Communicating and downloading data from the James Webb Space Telescope
3. Spiral Galaxy Rotation Curve Builder 
4. A rising Orion on a cold December night  
5. Shape of Earth is an oblate spheroid 
6. Earth holds an elite status in the solar system 
7. Observations from Lick Observatory,2018  
8. Stars
1. Sunspots and the butterfly diagram
2. Periods of 25 Variable Stars in the Small Magellanic Cloud. 
3. Some of the things binary stars do... 
4. Expansion of Crab Nebula (M1)  
5. Others
   
1. The Tyranny of the Rocket Equation 
2. A Smoking Revelation 
3. On the zeroth law of thermodynamics 
4. 🎥 Powers of ten  
5. Length contraction , Time dilation and Lorentz Transformation: Pokemon edition
6. Feynman’s trick applied to Contour Integration 
7. The acoustic sweet spot  

Code and Technology

1. Python
1. matplotlib's add_axes and windows lagscreen 
2.  It is ridiculously easy to generate any audio wave signal in Python
3.  Data visualization using grammar of graphics and plotnine 
4.  Python decorator: Example 1 
5.  globals() and creating 100 global variables at once  
6. Zotero to Tiddlywiki5 
7. svglue: Templating using inkscape and python 
8. beautifyPlot: A simple matplotlib wrapper to avoid writing ‘plt.’ statements on many lines 
   
2. Linux
1. Setting default applications in Ubuntu  
2. Exploring /dev/input directory
3. Configuring XP-Pen drivers on Linux   
4. gnuplot: Tips and tricks    
5. .desktop files on Ubuntu 
3. Javascript  
1. Text Fragments   
4. Others
1. Disabling YouTube shorts
2. The New York Times v/s OpenAI, Microsoft lawsuit  
3. Giving up on PDF annotations 
   

Engineering

1. Explorations in Photoelasticity 
2. Earth’s rotation and Space shuttle launches  
3. Fluid Mechanics
1. Visualizations
1. 🎥 CYMATICS: Science Vs. Music - Nigel Stanford 
   
2. Flow Galleria (#1): Oil film viewed using Polarizing Filters 
3. Flow Galleria (#2): Smoke from an Incense stick  
4. Flow Galleria (#3): Hot water under Thermal camera 
5. Flow Galleria (#4): Thermal mixing of cold Milk with hot water  
6. Flow Galleria (#5): Magic of a bright striped background
2. Buoyancy
   1. Origins of the Buoyant force
   2. How do hot air balloons work?
   3. Note on average density and how do ships not sink ?
3. Flow Instabilities
   1. Plateau- Rayleigh Instability
4. 3.5mm headphone jack
1. Preparing a headphone jack for hacking
2. Every speaker is also a microphone
3. The Anatomy of a headphone jack
4. How does a computer know that you have plugged in a jack ?
5. Testing basic headphone jack functions (Android)
6. Don’t do this! – Headphone jack
7. Speaker Impedance and the Headphone jack
8. The Ultimate Guide to using LEDs with headphone jack
9. Vibration motor meets the headphone jack
10. LiFi using solar panel and headphone jack
11. LiFi using IR sensor, Arduino and headphone jack
12. Really simple “mobile phone detector” using headphone jack
13. Lightning detector with nothing more than a simple headphone jack
14. Headphone jack meets a spark gap
15. Detect switching ON/OFF of Tube-light with a simple headphone jack
16. Cigarette Lighter spark detection using headphone jack
17. Transmitting in the RF range using the headphone jack
18. Listening to radio signals from a remote control car using a headphone jack
19. Obstacle detector “with audible feedback” using headphone jack, IR sensor and 555 timer
20. Wireless Drawdio and Body Coupled Communciation using the headphone jack 
     

Biology

1. 🎥 The Secret Social Life of Plants
2. The Asteroid That Made a Mouse Into a Man

Others

1. 🎥 Dotted lines on blackboard with chalk | 1000 fps
2. 🎥 Burning matches with laser | 1000fps 
3. 🎥 Plasma globe | 4k 
4. S curve growth of technology 
5. Devaluation of information in a consumer lifestyle society   
6. chatGPT and research abstracts 
7. The leap year complication 
   
8. Academia
1. Socioeconomic roots of academic faculty 
2. Richard Feynman’s Letter on What Problems to Solve
3.  Choose Your Weapon: Survival Strategies for Depressed AI Academics
4. When universities are theme parks   
5. Chaos in the brickyard 
6.  🎥 What's Going Wrong in Particle Physics?