This physicist-inventor and electrical engineer who mainly dealt with electrotechnics was undoubtedly one of the most brilliant figures of the second...
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...
The B-24 Liberator was an American heavy bomber aircraft, built in large numbers, that was used on every front during World War II.
The building commissioned by Pompey the Great was the first permanent theatre in Ancient Rome.
The curvature of the lens of the eye changes when we look at a distant or at a near object, to ensure a sharp image.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
The pancreas and the liver empty digestive juices into the duodenum.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
Eukaryotic cells contain a number of organelles.
The ribs, the sternum and the spinal column form the skeleton of the chest.
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.
Majestic even in its ruins, this city was the largest and most populous settlement in the pre-Columbian Americas.
This animation presents some interesting facts in the field of astronomy.
Certain mushrooms are poisonous and can be fatal for humans when consumed, while others are edible and used widely in cooking.
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...
This animation demonstrates the functioning of the 3 basic types of water tap.
This animation introduces the most important systems of the human body.