On August 19, 1947, Dutch chemists David Adriaan van Dorp and Josef Ferdinand Arens synthesized vitamin A or retinol for the first time in history. The same year Otto Isler introduced the vitamin into production.
Have you ever thought about the fact that people can see the world differently? For some people the apple is red, but for others the apple is green. And it's not about psychology at all. Today we are going to talk about color blindness.
In this article, we are going to tell you how water travels from discharge pipes to water bodies, and then to bathrooms or kitchens.
Новый выпуск — №8-9 2021
«В мире науки»
What saints did the conquistadors pray to and why did they decide to conquer Mexico? What was the ethnic, regional, and age composition of the Conquista?