How is paper made?

It is made from wood, from which cellulose fibers are extracted, converted into paper after a series of industrial processes. What few people know is that it was not always this way. Paper was invented in China in the 2nd…

Is it really possible for a shot to backfire?

(/) ammo assembly ILLUSTRATES Elias Fernandes No. The design and functioning of current pistols and the type of ammunition used prevent a projectile from “reversing” and hitting the shooter. The origin of the expression “The shot backfired” is uncertain, but…

What is an overdose death like?

Technically, overdose doesn’t kill. What can take someone’s life is what it causes – and it varies greatly. By its impact on the body, we can divide drugs, illegal or not, into two groups: depressants (or sedatives) and stimulants. They…

How was the speed of light calculated?

Until 1676, it was believed that light was instantaneous. That year, the Danish astronomer Ole Roemer observed in the telescope that, compared to his calculations, there was a delay of 22 minutes in the eclipses of Jupiter’s moons. Roemer concluded…

How is a heart bypass performed?

This heart surgery consists of removing part of the saphenous vein, which is in the leg, to reconnect heart arteries obstructed by fatty plaques. With the new connection, called a bridge by doctors, it is possible to normalize blood circulation…

How is a motel inside?

It depends on the motel. The lowliest ones only have the basics for a minimally comfortable stay: bed, TV and bathroom. Since we’re no small amount of crap, we opted for a virtual tour in one of the best houses…