Science4All

Welcome to Science4All

My name is Lê and I believe that the greatest challenge in education is to make science and math appealing.
This is why I aim at bringing enthusiasm and excitement to the readers’ learning experience.
I now run a Robustly Beneficial wiki, mostly on AI ethics, which has come to fascinate me!

Check my articles

The Cubic Ball of the 2014 FIFA World Cup

The Cubic Ball of the 2014 FIFA World Cup
By Lê Nguyên Hoang | Updated:2016-02 | Views: 9197
I know this sounds crazy. Even stupid. But Adidas did design a cubic ball, called brazuca, for the 2014 World Cup. And, yet, this cubic ball is rounder than any previous ball in football History. How is it possible? This article explains it.

The Thrilling Physics of Resonance

The Thrilling Physics of Resonance
By Lê Nguyên Hoang | Updated:2016-01 | Views: 18717
From the destruction of bridges and buildings to the foundations of electromagnetism and quantum mechanics, through their uses by radios or our ears,resonance is a counter-intuitive underlying phenomenon which shapes our reality. But amazingly, they can be made amazingly visual by playing with head massagers!

The Tortuous Geometry of the Flat Torus

The Tortuous Geometry of the Flat Torus
By Lê Nguyên Hoang | Updated:2015-12 | Views: 19758
Take a square sheet of paper. Can you glue opposite sides without ever folding the paper? This is a conundrum that many of the greatest modern mathematicians, like Gauss, Riemann, and Mandelbrot, couldn't figure out. While John Nash did answer yes, he couldn't say how. After 160 years of research, Vincent Borrelli and his collaborators have finally provided a revolutionary and breathtaking example of a bending of a square sheet of paper! And it is spectacularly beautiful!

The Most Beautiful Equation of Math: Euler's Identity

The Most Beautiful Equation of Math: Euler's Identity
By Lê Nguyên Hoang | Updated:2016-01 | Views: 92489
In 1988, Euler's identity was elected most beautiful theorem of mathematics. It has been widely taught worldwide. But have you ever stopped to really sense the meaning of this incredible formula? This article does.

Proof by Mathematical Induction

Proof by Mathematical Induction
By Lê Nguyên Hoang | Updated:2015-12 | Views: 6563
This article explores the potency of proofs by induction with 4 different stunning puzzles, from a lock puzzle and a lion issue, to the monk problem and the pencil conundrum!

HDI: a measure of human capabilities

HDI: a measure of human capabilities
By Estève Giraud | Updated:2016-02 | Views: 6774

Euler's Formula and the Utilities Problem

Euler's Formula and the Utilities Problem
By Lê Nguyên Hoang | Updated:2016-01 | Views: 17818
I was a kid when I was first introduced to the deceptively simple utilities problem. It's only lately that I've discovered its solution! And it's an amazing one! Indeed, it provides a wonderful insight into some fundamental mathematics, including Euler's formula! This is nothing less than the gateway to the wonderful world of algebraic topology!

Fair Division and Cake-Cutting

Fair Division and Cake-Cutting
By Lê Nguyên Hoang | Updated:2016-02 | Views: 6239
Cutting a cake to satisfy everyone is no piece of cake! In the article, we focus on classical definitions of fair divisions. I'll criticize those definitions and conclude by extrapolating them to fairness in society.

Spacetime of General Relativity

Spacetime of General Relativity
By Lê Nguyên Hoang | Updated:2016-01 | Views: 13988
Most popular science explanations of the theory of general relativity are very nice-looking. But they are also deeply misleading. This article presents you a more accurate picture of the spacetime envisioned by Albert Einstein.

The coach's dilemma.

The coach's dilemma.
By Herminio López | Updated:2016-02 | Views: 878

Watch my videos

Welcome to Science4All

No idea of search? Click on your favorite word!