Persians were also recognised as innovators in the fields of refrigeration, cooling, and ventilation.
The first crafting methods for prehistoric refrigerators date back to around 400 BC, making Persian expertise in cooling and refrigeration technology even older. These structures, known as Yakhchals, typically included sizable, well-insulated underground storage areas, sometimes exceeding volumes of 1,800,000 cubic feet. Additionally, the subterranean spaces had Qanat, or wind catchers, for generating natural ventilation that helped with temperature drops to even freezing points. With the aid of a mortar made of sand, lime, egg white, goat hair, and ash, these underground chambers were literally topped off by stepped dome-like structures made of heat-resistant mud bricks that frequently reached heights of over 60 feet.
Related Facts
Did you Know? Love at first sight actually happens
Surgery on the pancreas is extremely challenging.
Viking women held a unique position in society.
Home births are still popular in the Netherlands
Vitamin C's Role in Collagen:
Do you Know about the iPhone EULA?
The Dutch consume the most liquorice in the world
There are two versions of braille – contracted and uncontracted.
Did you Know? Dracula Was Inspired By A Nightmare.
They don't take up a lot of room
The Sea Lamprey eats burbot, catfish, ciscoes, perch, sturgeon, trout, and whitefish.
Most Hong Kong apartment structures lack the fourth story!
THE LARGEST EU CANDLE PRODUCER IS POLAND
A busy little plant, the snake plant.
Chihuahuas are descended from an old breed.
Did you Know? Serkis had to play King Kong twice for the same movie.
Turkey is the world's largest hazelnut grower.
Humidity is ideal for dust mites.
In Hong Kong, the magical technique of Feng Shui is still widely practised.
In Nuwara Eliya, you'll be reminded of England.
Students who write longhand notes remember more and have a deeper understanding of the material than those who take notes from laptop.
Knowing Your Triggers: Smoke, Cold Air, Exercise, Allergies, and Nights.
Jane AUSTEN’S “JUVENILIA,” OR EARLIEST WRITING, CONSISTED OF 90,000 WORDS OF POETRY, STORIES, AND NOVELS.
Crocodiles can gallop like a horse.
Typically, yetis are thought to have dark hair.