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In the 17th century, many of the anatomical specimens were dried and stored in cabinets. In the Netherlands, there were attempts to replicate Egyptian mummies by preserving soft tissue. This became known as Balsaming. In the 1660s the Dutch were also attempting to preserve organs by injecting wax to keep the organ's shape.
1974: The lithium-ion battery is invented by M. Stanley Whittingham, and further developed in the 1980s and 1990s by John B. Goodenough, Rachid Yazami and Akira Yoshino. It has impacted modern consumer electronics and electric vehicles. [508] 1974: The Rubik's cube is invented by Ernő Rubik which went on to be the best selling puzzle ever. [509]
Mary Beatrice Davidson Kenner (May 17, 1912 – January 13, 2006) was an American inventor most noted for her development of the adjustable sanitary belt. [1] Kenner received five patents, which includes a carrier attachment for invalid walker and bathroom tissue dispenser.
These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. For events from c. 3200 BC – c. 500 see: Timeline of ancient history; For events from c. 500 – c. 1499, see: Timeline of post-classical history; For events from c. 1500, see: Timelines of modern history
500 BC – Pills were used. They were presumably invented so that measured amounts of a medicinal substance could be delivered to a patient. 510–430 BC – Alcmaeon of Croton scientific anatomic dissections. He studied the optic nerves and the brain, arguing that the brain was the seat of the senses and intelligence.
In 1661, 1664 and 1665, the blood cells were discerned by Marcello Malpighi. In 1678, the red blood corpuscles was described by Jan Swammerdam of Amsterdam, a Dutch naturalist and physician. The first complete account of the red cells was made by Anthony van Leeuwenhoek of Delft in the last quarter of the 17th century.
The different tissues were designated as tissue groups with different half-times, and saturation was assumed after four half-times (93.75%) Five tissue compartments were chosen, with half-times of 5, 10, 20, 40 and 75 minutes. [55] Depth intervals of 10 ft were chosen for decompression stops. [11]
Researchers report the world's first artificial synthesis of starch. The material essential for many products and the most common carbohydrate in human diets was made from CO 2 in a cell-free process and could reduce land, pesticide and water use as well as greenhouse gas emissions while increasing food security. [150] [151]