Article by Jolene Creighton

There are a number of collections that are like this—collections that aim to demonstrate science concepts in a way that is easily digestible. Each is unique in its own way, and I really encourage you to spend some time google-ing about and finding all the various lists, as many of them are terribly informative.

Here, full disclosure, I tried to trace down the original source. This means that, if I found something on Reddit, I did a reverse image search to trace down the original creator and original appearance.

Anyways, I hope you enjoy the show.

### 1) THIS IS A REULEAUX TRIANGLE

There are curves of constant width besides circles and spheres. It’s a convex planar shape whose width is the same regardless of the orientation of the curve.

### 2) THESE CURVES OF CONSTANT WIDTH CAN DRILL SQUARE HOLES

### 3) THIS IS WHY PI IS SIGNIFICANT

This animation shows the act of unrolling a circle’s circumference [or trying to], illustrating the ratio π.

### 4) HOW TO MAKE PASCAL’S TRIANGLE

These are used in algebra and probability, where it can be used to find Combinations.

### 5) THIS IS A MIURA FOLD

It’s a method of folding a flat surface into a smaller size. It consists of tessellated parallelograms and is used in the solar panels of satellites.

### 6) THIS IS A PARABOLA

If you kick a soccer ball (or shoot an arrow, fire a missile, or throw a stone) it will arc up into the air and come down again…following the path of a parabola!

### 7) THIS IS A RADIAN

The radian is the standard unit of angular measure, used in many areas of mathematics.

### 8) THIS IS A MATRIX TRANSPOSITION

A matrix which is formed by turning all the rows of a given matrix into columns and vice-versa. The transpose of matrix A is written A^{T
}

### 9) THIS IS A SIERPINSKI TRIANGLE

It’s a kind of fractal, a mathematically generated pattern that can be reproducible at any magnification or reduction.

### 10) HERE’S HOW YOU CONVERT CARTESIAN (RECTANGULAR) TO POLAR COORDINATES

### 11) THIS IS HOW EXTERIOR ANGLES OF POLYGONS WORK

They add up to 360 degrees.

### 12) THIS IS A HYPERBOLOID MADE UP OF STRAIGHT LINES

### 13) THIS IS ALSO A HYPERBOLOID OF STRAIGHT LINES

### 14) THIS IS HOW WHITE BLOOD CELLS KEEP YOU SAFE

In the video, a white blood cell chases and engulfs this bacteria–**watch until the end!
**

### 15) THIS IS EARTH’S ICE AND VEGETATION CYCLE OVER A YEAR

### 16) THERE IS FLAMMABLE MATTER IN SMOKE

Smoke is not just nothingness, obviously. So it can burn.

### 17) THIS IS WHAT IT LOOKS LIKE WHEN YOU SET A FLAMMABLE GAS ON FIRE IN A CONTAINED ENVIRONMENT

### 18) THIS IS QUANTUM LEVITATION DUE TO VORTEX PINNING

A superconductor levitates over a magnetic track.

### 19) THIS IS HOW TENSION WORKS IN RELATION TO FALLING OBJECTS

Watch a slinky fall to the Earth; this is how slinkies always fall.

### 20) NOT ALL GASSES HAVE THE SAME DENSITY

Sulphur hexafluoride is much denser than air.

### 21) BONUS! AND REMEMBER, ALL THOSE AMAZING ASTRONOMY IMAGES ARE MUCH MORE THAN 2D IMAGES…

The Elephant’s Trunk nebula in 3D.