To move freely in one space, we must sometimes step into a higher one.
Chapter 1

The birth of the forbidden number

Chapter 2

The magic of the complex plane

Chapter 3

Surpassing i with quaternions

Chapter 4

The infinite climb of dimensions

Ch 3 · Surpassing i with quaternions
007skaty

007skaty Calculating rotations in the third dimension frustrated early mathematicians.

2h ago

007skaty

007skaty Gimbal Lock and Quaternions

We keep the camera rotating in the sky, Adding j and k to help us surpass i.

2h ago

007skaty
Fighting the rule of order
BETA

007skaty Swipe away the rigid boundaries to discover how breaking the rules helps you surpass limits.

2h ago

007skaty
The frustration of the third dimension

007skaty Before 1843, Hamilton tried combining real numbers, i, and a new unit j, but his three-part math system kept breaking down.

2h ago

007skaty
Quiz

In what century did William Rowan Hamilton attempt to expand complex numbers into 3D space?

2h ago

007skaty
Quiz

What mathematical operation was Hamilton trying to perform in 3D that kept failing with only two imaginary units?

2h ago

007skaty
To move freely in one space, we must sometimes step into a higher one.

2h ago

007skaty
The flash of genius on Brougham Bridge

007skaty He carved his formula with three imaginary units into Dublin's Brougham Bridge.

2h ago

007skaty
Quiz

What is the name of the four-dimensional number system Hamilton invented that day?

2h ago

007skaty
Quiz

What did William Rowan Hamilton do immediately after having his mathematical epiphany?

2h ago

007skaty
Fun Fact

Vandalism plaque: Brougham Bridge in Dublin features a permanent stone plaque celebrating Hamilton's act of mathematical graffiti, which changed algebra forever.

2h ago

007skaty
Quiz

Which fundamental algebraic property did Quaternions famously abandon?

2h ago

007skaty
Quiz

In Quaternion multiplication, what is the result of multiplying 'j' by 'i'?

2h ago

007skaty
Glossary
quaternion (noun)
A hypercomplex number that extends the complex number system into four dimensions. William Rowan Hamilton famously carved their fundamental formula into Dublin's Brougham Bridge on October 16, 1843.

2h ago

007skaty
Quiz

Which modern technology relies heavily on Quaternions to render smooth, glitch-free 3D movements?

2h ago

007skaty
Quiz

What is the name of the mechanical and digital glitch where a rotating system loses a degree of freedom?

2h ago

007skaty
Gossip

Where would you write down a major scientific breakthrough?

2h ago

007skaty
Navigating the stars

007skaty Without up or down in space, onboard computers constantly calculate orientation to keep the International Space Station and satellites pointed correctly.

2h ago

007skaty
Quiz

Which famous 1969 space mission used Quaternions in its onboard guidance computer?

2h ago

007skaty
Quiz

Why does NASA prefer using Quaternions over traditional trigonometry for spacecraft navigation?

2h ago