An anemoscope, Also known as a windsock or wind cone, it is an instrument used to measure the speed of the wind and its strength. Wind is usually defi...
The triangles They are flat and closed geometric figures, consisting of three sides. A triangle is determined by three lines that intersect two by two...
The solid state it is one of the main ways in which matter aggregates to create solid or condensed bodies. The entire earth's crust, leaving out the s...
The qualitative properties Of the mattery are those that cannot be expressed in numerical values or quantities. They are detected, in many cases, th...
The oscillating universe theory or cyclical universe proposes that the universe expands and contracts indefinitely. Richard Tolman (1881-1948), a math...
The movements of the Earth and the Moon They have their origin, on the one hand, in the gravitational attraction of each one exerts on the other and, ...
The light energy or luminous is the one that carries light, an electromagnetic wave. It is the energy that makes the world around us visible and its m...
A star It is an astronomical object composed of gas, mainly hydrogen and helium, and kept in equilibrium thanks to the force of gravity, which tends t...
The Health and environmental implications of heavy metals they are quite serious, since they are toxic substances at low concentrations. It consists o...
