What are the layers of the atmosphere?

They are: troposphere, stratosphere, mesosphere, thermosphere and exosphere. Together, the five make up the atmosphere, the gaseous layer that surrounds the Earth and is responsible, among other things, for maintaining the planet’s thermal balance, protecting against the impact of meteors…

How does the fluorescent lamp work?

Fluorescence is one of the ways to convert electrical energy into light. Lamps based on this principle have four basic components: a transparent glass tube, two electrodes (one at each end), a mixture of gases and a material that coats…

What are menhirs?

»> They are megaliths – a sophisticated name for stone structures moved and placed upright by human beings. “They are often found together, in rows or in circles. There are menhirs all over the world, erected by different cultures and…

Do animals also have oral sex?

»> Yes, my dear, bonobos, very naughty “cousins” of chimpanzees, also practice oral sex with their partners. These primates, whose scientific name is Pan paniscus, are already famous for the mischief they do when it comes to sex. Not infrequently,…

Who invented the bicycle?

Literally, the first model to be called a bicycle (“two wheels”) appeared in 1870. It was all metal, had pedals on the huge front wheel and cost the equivalent of six months of wages for a worker. average. But it…

How is incense made?

The most common type, on sticks, is made from a simple and artisanal recipe. The first step is to obtain the ingredients, many of which can only be found in specialized stores (with the exception of the stick, sold at…

What are giraffe horns used for?

»> Structures similar to the horns of oxen, the horns, which resemble two little antennae, are used by males to hit opponents when they fight each other, exchanging headbutts and neck thrusts. As for the females, these structures are of…

What was the Protestant Reformation?

It was a religious movement that turned against the actions and rules of the Catholic Church. The main agent of Remodeling it was the German monk Martin Luther (1483-1546), who, in 1517, published 95 theses that fundamentally criticized the sale…