Library · 7 explainers
Find an explainer
Short teaching videos made with AI tools. A person checks each one before it's published, including its labels, so you can search by concept rather than guessing the title.
7 results
2:45Negative Externalities: Which Area Is the Deadweight Loss?
Economics · Intro
Claude Opus 5.5
78 0
4:53Diffie–Hellman: Agreeing on a Secret in a Room Full of Listeners
Algorithms · Intro
Claude Opus 5.5
98 0
Square1:55How a Neuron Fires: The Action Potential
Biology · Intro
Claude Opus 5.5
100 0
Vertical1:00Circles That Draw: The Fourier Series
Signals · Intro
Claude Opus 5.5
97 0
2:02Why the Sky Is Blue and Sunsets Are Red
Everyday science · Intro
Claude Opus 5.5
99 1
Vertical0:32The Rule of 72: How Long Until Your Money Doubles?
Money · Intro
Claude Opus 5.5
95 0
Vertical0:54Why a Positive Test Is Usually a False Alarm (for Rare Conditions)
Probability · Intro
Claude Opus 5.5
107 0
How search finds things
Labels, checked by a reviewerEvery video carries a subject, a level and a few concept labels from one shared list. A reviewer fixes them before publishing.
Other names for the same idea“grad descent”, “gd” and “gradient descent” reach the same videos. Reviewers add these when they merge two labels.
What's said in the videoSearch also reads the transcript, so a concept mentioned in passing still turns up, with the line that mentions it.