Technology

As recently as 2009, only 0.7 percent of Internet traffic came from mobile devices, today it is more than 50 percent.

Tungsten steel contains 2% to 18% of this element. It is extremely resistant to heat, corrosion and wear.

Naphtha, one of the lighter (0.78-0.81 g/cm3) fractions of petroleum, is almost as old as medicine.

Oil lamps have been displaced by electricity.

The wingspan of the An-225 is 88.4 meters and the length of the fuselage is 84 meters. The aircraft’s height is 10.10 meters.

After an unsuccessful first attempt to use kerosene in a structurally unsuitable oil lamp, Łukasiewicz and the tinsmith Bratkowski constructed a prototype kerosene lamp.

The history of the Internet dates back to the late 1960s.

YouTube was founded in February 2005 as an independent startup.

The Three Gorges Dam can store 39 trillion cubic meters of water.

The most produced type of steel is carbon steel. It is made of carbon and iron and accounts for about 90% of the world's steel production.