7 sentences with “atoms”

While an atom measures 0.0000001 millimetre, one millimetre of thread holds 5,000,000 atoms.

Professor Hoyle and two of his colleagues showed that literally everything - including the atoms in our bodies - is made from the hydrogen and helium found inside stars.

Two billion years ago, carbon atoms 150 kilometres below the earth's surface agglomerated and crystallised into diamonds under the extremely high pressures of such depths.

The average density of a nebula is between three hundred and fifteen hundred atoms per cubic centimetre, which is derisory compared to the ten trillion in the air at sea level on our planet.

Ozone gas, made up of three oxygen atoms, is harmful at sea level, but indispensable at an altitude of 12 to 25 kilometres, in the lower stratosphere, where it reaches its highest concentration (12 parts per million).

Other Greek scientists came to refine these ideas, especially when two of them (Leucippus and Democritus) came to the idea that the tiny particles they called atoms formed the elements that, in turn, formed everything else.

Ozone is formed when hard ultraviolet rays - very short wavelengths - break oxygen molecules in two, resulting in free oxygen atoms that rejoin with some of the abundant oxygen molecules, forming the valuable gas. This photochemical activity produces about 5000 molecules per second, which concentrate to form the ozone layer which, due to chlorofluorocarbons, is on the verge of extinction.