Dorling Kindersley Prints Gallery

The Periodic Table Digital Illustration

In the late 19th century, Russian chemist Dmitri Mendeleev published his first attempt at grouping chemical elements according to their atomic weights. There were only about 60 elements known at the time, but Mendeleev realized that when the elements were organized by weight, certain types of elements occurred in regular intervals, or periods.
Today chemists officially recognize 118 elements and still use Mendeleev's periodic table of elements to organize them. The table starts with the simplest atom, hydrogen, and then organizes the rest of the elements by atomic number, which is the number of protons each contains. With a handful of exceptions, the order of the elements corresponds with the increasing mass of each atom

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blue, british, history, horizontal, locomotive, mallard, no people, public transport

blue, british, history, horizontal, locomotive, mallard, no people, public transport, side view, smoke, steam train, studio shot, train, transportation, watercolour painting, white background, 20th century, Dorling Kindersley Prints, 98193347

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20th Century, 98193347, Blue, British, History, Horizontal, Locomotive, Mallard, No People, Public Transport, Side View, Smoke, Steam Train, Studio Shot, Train, Transportation, Watercolour Painting, White Background

Cross section illustration of human brain showing limbic system and primitive forebrain

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98955099, Anatomy, Biomedical Illustration, Brain, Cerebrum, Color Image, Connection, Cross Section, Horizontal, Human Body Part, Human Brain, Human Nervous System, Illustration, Limbic System, No People, Physiology, Primitive Forebrain, Sensory Perception, Single Object, Studio Shot, Watercolor Painting, Watercolour Painting, White Background