Microscope: Did you mean...?

A pen and ink drawing by Robert Hooke (1635-1703) first published in his Micrographia in 1665. This page shows a bluefly seen under a microscope. (National Library of Wales)

A pen and ink drawing by Robert Hooke (1635-1703) and published in his Micrographia in 1665. This page shows frozen structures seen under a microscope. (National Library of Wales)

The Scientific Revolution (1500-1700), which occurred first in Europe before spreading worldwide, witnessed a new approach to knowledge gathering – the scientific method – which utilised new technologies like the telescope to observe, measure...

Marcello Malpighi (1628-1694) was an Italian scientist and physician famous for discovering the capillaries of the human circulatory system in 1661 and, as the greatest anatomist of the Scientific Revolution, founding the science of microscopic...

The germ theory, which emerged in the late 19th century, demonstrated that microscopic germs caused most human infectious diseases. The germs involved included bacteria, viruses, fungi, protozoa, and prions. Louis Pasteur (1822-1895), a French...

Cochineal is a brilliant red dye extracted from the crushed bodies of parasitic insects which prey on cacti in the warmer parts of the Americas. The dye was an important part of trade in ancient Mesoamerica and South America and throughout...

The human body's system of blood circulation was discovered by the English physician and anatomist William Harvey (1578-1657) in 1628. Harvey determined the relationship between the blood system of arteries and veins and the regular contractions...

Alchemy is an ancient practice aimed at recreating precious substances using recipes and transformative materials such as the philosopher's stone. Alchemists believed that materials like gold, silver, gems, and purple dye could be recreated...

The scientific method was first used during the Scientific Revolution (1500-1700). The method combined theoretical knowledge such as mathematics with practical experimentation using scientific instruments, results analysis and comparisons...

The Spanish flu (so-named because the Spanish press openly reported on the outbreak while other World War I belligerents suppressed the news) broke out in March 1918 at Camp Funston, an army camp in Kansas, and struck young, healthy adults...