## Erwin Schrödinger and the Half-Alive Cat

Austrian physicist Erwin Schrödinger is one of the founders of quantum mechanics. In 1935, he posed this problem: imagine you take a cat and place it in a sealed box along with a radioactive device that had a 50% chance of killing the cat. In an hour, is the cat dead or alive? What do you think?

## The Fibonacci Sequence (Part 1)

Hi everyone! Today I am going to talk about the Fibonacci sequence and where it appears in nature.

## A Piece of Pi

Hello mathematicians! Today we are going to talk about $$\pi$$ (aka Pi).

The discoverer of Pi is also the man who famously sat in a bathtub and discovered that the water level went up when he got in to the tub. Archimedes of Syracuse (287 BC – 212 BC) was an Italian-Greek mathematician, and he had come up with an approximation for Pi. We know that $$\pi = \dfrac{\text{Circumference}}{\text{Diameter}}$$, but to get Pi, we need to measure a curved surface (the circumference). But Archimedes thought of it another way: a circle is actually a regular polygon, but it has an infinite number of sides and every side is infinitely small. Hence, the circle looks round.

## How good is Pythagoras’ theorem?

Here, I look at the most interesting formula in the world: Pythagoras’ Theorem!