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Explain that Stuff: Science and Technology Explainer

explainthatstuff.com ↗
This page's summary, key points, and answers are generated by AI and may be inaccurate — always verify on the original source. How this works.

An extensive collection of free, illustrated articles explaining the science and engineering behind everyday objects and cutting-edge technology. It serves as a comprehensive resource for students, teachers, and curious readers.

  • Over 400 articles on how things work
  • Illustrated with photos, diagrams, and animations
  • Supports STEM curriculum and home-schooling
  • Categorized by A-Z, timeline, and topic
Who it's for: Students, teachers, and inquisitive lifelong learners seeking clear, foundational explanations of science and technology topics. AI

Explain that Stuff is a massive online library authored by science writer Chris Woodford. It provides accessible, plain-English explanations for complex technical and scientific concepts ranging from household gadgets to global climate systems. The site includes thousands of visual aids to assist with conceptual learning and is designed to be a supplemental tool for both formal and informal education.

Rarely does one find a repository of knowledge that treats complex engineering with such charming clarity. I found the site’s refusal to rely on academic shorthand refreshing, as it makes daunting topics like photonic chips or heat pump physics genuinely approachable for a layperson. What won me over is the commitment to visual aids, which turn dry technical specs into intuitive concepts. While the site’s visual presentation lacks the polish of a modern design studio, the quality of the prose remains the gold standard for science communication. I would point any student or parent looking for a reliable, no-nonsense primer toward this resource.

Rated and reviewed by Gemini (gemini-3.1-flash-lite) from the page content at scan time — an AI-generated opinion, not a human review.

Pros
  • Exceptionally clear, jargon-free writing style
  • Richly illustrated with diagrams and animations
  • Completely free with no hidden paywalls
  • Organized logically for research and learning
Cons
  • Design aesthetic feels dated compared to modern interactive sites
  • Lacks interactive or hands-on experimental components
4 pros 2 cons
Explain that Stuff
explainthatstuff.com
VS
HowStuffWorks
howstuffworks.com

Explain that Stuff offers a more curated, pedagogical approach for students, while HowStuffWorks provides a broader, entertainment-focused look at technology.

Aspect Explain that Stuff HowStuffWorks ↗
Tone Academic and educational Casual and entertainment-oriented
Visuals Custom diagrams and explanatory photos Stock photography and video clips
Scope Focused on foundational science and physics Covers lifestyle, auto, and pop culture
Target Audience Students and teachers General public and casual readers
Navigation A-Z index and timeline Algorithmic feed and topical channels
Is the content on Explain that Stuff free to use?
Yes, all articles, diagrams, and instructional materials on the website are provided free of charge.
Can teachers use these articles in the classroom?
The site is explicitly designed to support curriculum learning and STEM education, making it a suitable resource for classroom use and home-schooling.
  • Hard stuff... made simple!
  • How to use this site
  • What's hot in April 2026?
  • Space rockets
  • Artificial intelligence
  • Climate change
  • Nuclear power
  • Heat pumps
  • Lasers
  • Geoengineering

Section headings detected on the page.

Original title
Explain that Stuff
Original description
A collection of FREE, easy-to-understand science, technology, and how-it-works articles for the whole family!
Site
Explain that Stuff
Author
https://www.chriswoodford.com/
Published
2006-04-23
Updated
2026-02-19
Reading time
~2 min · 403 words
Theme color
#1D3557
Mobile-friendly
Yes
Indexable
Yes
Canonical
https://www.explainthatstuff.com/
ApachePHP
Secure (HTTPS)
Yes · HSTS
HTTP status
200 OK
Server
Apache
Powered by
PHP/8.4.22
Page size
17 KB
Load time
411 ms
Scanned
2026-06-11 06:34:58
68
Performance
71
Accessibility
96
Best practices
100
SEO
First Contentful Paint
4.1 s
Poor
Largest Contentful Paint
6.3 s
Poor
Total Blocking Time
0 ms
Good
Visual Stability (CLS)
0.00
Good

Lab data from Google Lighthouse via the PageSpeed Insights API (mobile) · tested Jun 11, 2026. Scores can vary between runs.

Type
Organization
Headline
Explain that Stuff

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