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Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

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Rectangular Waveguide - TE and TM Modes

Explore how TE and TM modes behave in a rectangular waveguide.
- YouTube
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Viktor Shklovsky's Art as Technique

Explore Viktor Shklovsky's influential essay on literary theory, examining how art defamiliarizes the familiar to enhance perception and create aesthetic experiences.
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Introduction to Type-III Compensator

An introduction to the Type-III compensator, a specialized approach to control-loop compensation.
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LAMMPS Exercises - Part 5

A fifth set of practical exercises in LAMMPS.
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Dead-Time Switching Loss in DC-DC Converters

Examines how dead time contributes to switching losses in DC-DC converters.
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Presents techniques for laying out analog circuits.
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Reviews the general scalar transport equation and introduces its finite-volume formulation through the Gauss divergence theorem.
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A short lesson connecting first-order systems with phase margin.
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A focused lecture on the rank of a matrix.
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Introduction to Organizational Behaviour - Part 3

A short installment introducing organizational behaviour.
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Longinus' On the Sublime - Session 1

An opening session on Longinus’ treatise On the Sublime.
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A focused look at a bandgap circuit designed to operate below one volt.
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Negative Number Representation - Sign Magnitude, 1's Complement, and Bias-Based Representation

Compare sign-magnitude, 1’s-complement, and biased encodings of negative numbers, with a number-circle view of their representations.
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Concurrency Control Using Locks

Learn how locks are used to control concurrency.
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Examines output voltage ripple in a buck converter.
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