It’s fun watching historical documentaries on Youtube.
- There are many people who create pleased in subjects that interest them, and world history is no exception.
One of my most cherished Youtube pleased creators is a world history professor at a giant state school. As a way to generate an additional income stream, he makes videos on many of the subjects that he covers in his school courses. In doing so, he takes costly information and gives it to the masses for free, particularly for those who simply can’t afford school. There’s another channel that I watch which is made by a comparative religion professor from a bizarre school. The channel that has really been the most informative to me thus far is focused on temperature change, indoor temperature control, and the effects of meteorology on people and their environments. The people who run this Youtube channel made a documentary recently about historical examples of indoor temperature control, and I was shocked to learn that Ancient Egyptians discovered evaporative air cooling thoUSnds of years ago! They hung wet reeds in open windows at night; as hot air would enter from outside and dry the reeds, the evaporating water would lower the temperature of the wind current. In addition to evaporative cooling, there were locations in Ancient Rome where water from the aqueducts was routed into channels that would encircle homes of the wealthy and elite. The freezing water would create a cooling effect for the renters inside the building. Nowadays you have the same logic being used in hydronic oil furnaces, although the water is purely used for heating and not for indoor cooling.