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

From Britain's coast to Julia set: an introduction to fractals

From Britain's coast to Julia set: an introduction to fractals
By Thomas C | Updated:2016-02 | Views: 4536

Conditional Probabilities: Know what you Learn

Conditional Probabilities: Know what you Learn
By Lê Nguyên Hoang | Updated:2016-02 | Views: 4911
Suppose a man has two children, one of them being a boy. What's the probability of the other one being a boy too? This complex question has intrigued thinkers for long until mathematics eventually provided a great framework to better understanding of what's known as conditional probabilities. In this article, we present the ideas through the two-children problem and other fun examples.

Mechanism Design and the Revelation Principle

Mechanism Design and the Revelation Principle
By Lê Nguyên Hoang | Updated:2016-02 | Views: 6791
Whenever you need to make a group of people interact, you are designing a mechanism. If you want to achieve a good interaction, you need to make sure your mechanism is well designed. In this article, I'll show you main features of mechanisms through various examples. I'll also talk about a great mathematical tool for mechanism design: the revelation principle.

Temperature Misconception: Heat is Not How it Feels

Temperature Misconception: Heat is Not How it Feels
By Lê Nguyên Hoang | Updated:2015-12 | Views: 2994
In the last FIFA football world cup, many players complain about Manaus' unbearable heat condition. Yet, the thermometer only went up to 30°C (86°F). Why is that? Well, as it turns out, how you feel is not really the outside temperature. This article unveils many of our deep misconceptions about heat.

The Magic of Algebra

The Magic of Algebra
By Lê Nguyên Hoang | Updated:2016-02 | Views: 3745
The power of algebra lies in abstraction, and abstraction is basically forgetting. By retracing the History of algebra from its roots to more recent advancements, this article unveils the numerous breakthrough in our understanding of the world, by abusing of the power of forgetting.

The Magic of Analysis

The Magic of Analysis
By Lê Nguyên Hoang | Updated:2016-02 | Views: 1900
This article retraces the endless pursuit of the infinite that is at the basis of mathematical analysis. From the first approximations of pi to the shape of our limitless universe, from the essential usefulness of differential equations to the troubles with infinite sums, we present the great ideas of mathematical geniuses all along History.

The forces of Nature: from Newton to String Theory

The forces of Nature: from Newton to String Theory
By Thibault_Lehouillier | Updated:2016-02 | Views: 2990

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: 8718
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 Amazing Physics of Water in Trees

The Amazing Physics of Water in Trees
By Lê Nguyên Hoang | Updated:2016-01 | Views: 60856
As explained by Derek Muller on Veritasium, the flow of water in trees involves complex physical phenomena including pressure, osmosis, negative pressure, capillarity and evapotranspiration. What seems simple will blow your mind!

The Beauty of Ellipses, Parabolas and Hyperbolas

The Beauty of Ellipses, Parabolas and Hyperbolas
By Lê Nguyên Hoang | Updated:2016-01 | Views: 57943
The conic sections, that is, ellipses, parabolas and hyperbolas, are too often presented analytically. Yet, their amazing beauty is actually their spectacular geometry, as well as their omnipresence! This article presents plenty of illustrative descriptions of their uncountable applications!

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