# Six Tech Inventions That Changed The World

- Institution: Gresham College
- Speaker: Professor Richard Harvey
- Year: 2021
- Level: For everyone
- Language: English
- Subjects: Computer science, Society and politics
- Source: [Gresham College](https://www.gresham.ac.uk/watch-now/series/tech-inventions)
- 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)

In 1977 or thereabouts a collection of scientists huddled around a secret radio receiver in the US desert. This was the start of GPS, Glonass, Gallileo and the whole navigation industry. But how does this technology work? And are there situations when it does not work?

## Lectures

1. [Inventions That Changed The World: GPS](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/7525c4123d5a) (YouTube)
2. [Compression](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/866560783650) (YouTube)
3. [Error Control Coding](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/ebe809612354) (YouTube)
4. [Cellular Phones](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/9e04764d85b5) (YouTube)
5. [Integral Transforms](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/ad56006fe4c0) (YouTube)
6. [Operating Systems](https://invisiblenetwork.ai/learn/gresham/series-tech-inventions/8266828cb50a) (YouTube)