3Blue1Brown, by Grant Sanderson, is some combination of math and entertainment, depending on your disposition. The goal is for explanations to be driven by animations and for difficult problems to be made simple with changes in perspective.

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But what is a neural network? | Chapter 1, Deep learning

10,506,935 views

The essence of calculus

5,782,632 views

But how does bitcoin actually work?

12,392,374 views

Visualizing the Riemann zeta function and analytic continuation

3,471,118 views

e^(iÏ€) in 3.14 minutes, using dynamics | DE5

1,766,226 views

Group theory, abstraction, and the 196,883-dimensional monster

1,967,753 views

Some light quantum mechanics (with minutephysics)

1,571,995 views

But what is the Fourier Transform? A visual introduction.

7,012,035 views

The more general uncertainty principle, beyond quantum

1,551,752 views

Fractals are typically not self-similar

2,881,925 views

Alice, Bob, and the average shadow of a cube

1,431,529 views

A few of the best math explainers from this summer

652,383 views

Newton's Fractal (which Newton knew nothing about)

1,484,443 views

The Summer of Math Exposition

635,359 views

How (and why) to raise e to the power of a matrix | DE6

1,320,394 views

The medical test paradox, and redesigning Bayes' rule

755,354 views

Hamming codes part 2, the elegance of it all

585,778 views

How to send a self-correcting message (Hamming codes)

1,305,775 views

Group theory, abstraction, and the 196,883-dimensional monster

1,967,753 views

The impossible chessboard puzzle

944,919 views

But why is a sphere's surface area four times its shadow?

5,418,639 views

The hardest problem on the hardest test

13,333,403 views

Who cares about topology? (Inscribed rectangle problem)

2,388,473 views

Why slicing a cone gives an ellipse

1,243,979 views

Thinking outside the 10-dimensional box

2,721,145 views

Circle Division Solution

495,888 views

Pi hiding in prime regularities

1,869,723 views

The most unexpected answer to a counting puzzle

8,263,391 views

Why do colliding blocks compute pi?

3,765,326 views

How pi was almost 6.283185...

919,310 views

The Wallis product for pi, proved geometrically

578,422 views

Some light quantum mechanics (with minutephysics)

1,571,995 views

The more general uncertainty principle, beyond quantum

1,551,752 views

Feynman's Lost Lecture (ft. 3Blue1Brown)

2,596,219 views

Why 5/3 is a fundamental constant for turbulence

589,691 views

Darts in Higher Dimensions (with 3blue1brown) - Numberphile

1,542,009 views

The almost impossible chessboard puzzle

579,669 views

Bell's Theorem: The Quantum Venn Diagram Paradox

6,600,116 views

How to Make a SQUARE Vortex Ring! ft. 3blue1brown

711,497 views

Dominoes - HARDCORE Mode - Smarter Every Day 182

2,823,053 views

The case against Net Neutrality?

130,379 views