# The story of i

- Institution: Gresham College
- Speaker: Professor Robin Wilson
- Year: 2007
- Level: For everyone
- Language: English
- Subjects: Mathematics, History
- Source: [Gresham College](https://www.gresham.ac.uk/watch-now/story-i)
- Licence: [Educational use (Gresham College's terms)](https://www.gresham.ac.uk/terms-and-conditions)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

What is meant by the square root of minus 1? Why is it 'imaginary'? What are complex numbers, and why are they useful? How can we represent them geometrically? And can we find numbers that are 'even more imaginary'?

## Lectures

1. [The story of i](https://invisiblenetwork.ai/learn/gresham/story-i/dd44412bf33b) (YouTube)