Search Results: Red blood cell

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...

Red Cloud (Makhpiya-luta, l. 1822-1909) was an Oglala Lakota Sioux chief, statesman, and military strategist who became the only Native American leader of the Plains Indians to win a war against the United States. Red Cloud's War (1866-1868...

Red Cloud's War (1866-1868) was a conflict between the Lakota Sioux-Cheyenne-Arapaho alliance and the US government over the westward expansion of the United States into the Powder River territory. It was the only war won by the Plains Indians...

An early 19th-century illustration of 'Colonel' Thomas Blood (1618-80) who infamously tried and failed to steal the British Crown Jewels from the Tower of London in 1671.

Red-figure Pottery is a style of Greek vase painting invented in Athens c. 530 BCE. The style has drawn red figures and a painted black background. Red-Figure Pottery grew in popularity, and by the early 5th century BCE it had all but replaced...

The Battle of Red Cliffs (also known as the Battle of Chibi, 208 CE) was the pivotal engagement between the forces of Northern China led by the warlord Cao Cao (l. 155-220 CE) and the allied defenders of the south under the command of Liu...

A distinctive red and black colour scheme characterises most of the painted pottery of sixth- and fifth-century Athens. The colours result from the skilful exploitation of the high iron content of Athenian clay by an ingenious process of...

The first stage in making a pot is to dig the clay out of the ground. Pieces of grit or plant matter must be removed before the clay can be used. This was done in ancient times, as it is today, by mixing the clay with water and letting the...

Crazy Horse (Tasunke Witko, l. c. 1840-1877) was an Oglala Lakota Sioux warrior and warband leader considered among the greatest defenders of Sioux lands against the forces of the US government in the 19th century. He is one of the most famous...

Colonel Thomas Blood, a known conspirator, made an infamous but unsuccessful attempt to steal the British Crown Jewels from the Tower of London in 1671. Disguised as a clergyman, Blood and his gang swiped the royal regalia from under the...