Posts
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Bokeh on a Budget
How to take great pictures on a budget using an adapted vintage manual lens and a second hand full-frame mirrorless camera body.
- photography
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Energy Efficiency of Airships Vs. Aeroplanes
Airships are generally assumed to be more energy efficient than aeroplanes. However, this presumed efficiency advantage has not yet been appropriately quantified in the pertinent academic literature. This article aims to fill this gap. It also evaluates airships and aeroplanes in terms of their suitability for future renewable energy carriers.
- airships
- sustainable transport
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A Comparison of Propulsion Energy Carriers for Airships
A comparison of past, present, and future energy carriers for airships, focusing on energy density and carbon emissions.
- airships
- sustainable transport
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Subfigures in HTML/CSS
How to create responsive LaTeX-like subfigures in HTML, and layout them with CSS only.
- web development
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Curiosities from the Eurobike 2025
A summary of interesting technological developments from the Eurobike 2025.
- human powered vehicles
- sustainable transport
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Write in Markdown, Deliver as DOCX
How to auto-generate DOCX files from Markdown source using pandoc, including tips and tricks for adjusting styles and writing templates.
- pandoc
- software
- academic writing
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Securely SSH Into Your Home Server With Cloudflare Tunnels
How to safely SSH into your home server without exposing your IP address or opening ports on your router.
- software
- networking
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How To Detect a WebKit-Based Browser Using JavaScript
Apply workarounds for WebKit-specific bugs after detecting whether a visitor’s browser is WebKit-based.
- web development
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Fun with CSS Selectors
A CSS selector to target HTML subtree boundary elements, for example to set the top or bottom margin of an element to a specific value, irrespective of the margins of child elements.
- web development
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Forces on a Fire Hose Nozzle
A derivation of the forces acting on a fire hose nozzle using the steady flow momentum equation, continuity, and Bernoulli’s principle.
- fluid mechanics
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On Wings of Minimum Induced Drag
Contrary to common belief, the elliptic lift distribution does not always result in minimum induced drag.
- fluid mechanics
- aircraft design
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How a Thermal Airship Keeps Its Tail Up
How a thermal airship keeps its tail up, despite being non-rigid and having an unpressurised hull.
- airships
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Universities Don’t Want You To Know This One Simple Trick
Three simple proofs of the Leibniz Integral Rule (differentiation under the integral sign). Commentary from Richard Feynman as a bonus!
- math
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Testing a Website in Safari on Linux
How to test a website in Safari on Linux, including how to setup a macOS virtual machine.
- linux
- web development