593 private links
https://www.youtube.com/channel/UCqDf3lwZY-MJYKMAw2ySkPQ/
Very well-produced video series on the modern history of Cairo's districts. In Arabic, with English subtitles.
سيرة القاهرة هى مبادرة مجتمعية للحفاظ على تراث العاصمة والتوعية بهِ من خلال الوسائط المتعددة والعمل على إعادة إحياء الأثر وحمايته
Bibliotheca Alexandrina's collection on Egypt's modern history.
Derek Muller (Veritasium) with an excellent explainer on how potash is produced.
A very visual demonstration of how cheap lighting is today (well, since electricity), and how expensive it used to be.
| Year/period | Hours of labour to earn the equivalent cost of 1h of lighting |
|---|---|
| 2020 | 0.0006 |
| 1800s | 5.53 |
| 2000 BC | 57.52 |
Related: consider the impact of nanostructures on improvements to modern LEDs.
How much could 10 french franc in 1898 buy in today's rupees? What was the worth of 1 billion German mark in 1923 or 1000 Polish zloty in 1980? Was an annual wage of 25 pounds per year in 1780 much compared to the wage rates at the time?
Via http://www.myntkabinettet.se/fakta/rakna_ut_penningvardet
Cracking Ancient Codes: Cuneiform Writing, with Irving Finkel, the Royal Institution.
Very entertaining and engrossing.