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The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.
In 1924, facial tissues as they are known today were first introduced by Kimberly-Clark as Kleenex. It was invented as a means to remove cold cream . Early advertisements linked Kleenex to Hollywood makeup departments and sometimes included endorsements from movie stars ( Helen Hayes and Jean Harlow ) who used Kleenex to remove their theatrical ...
500-1000 – Spinning wheel invented in the Indian subcontinent. [19] 1000s – Finely decorated examples of cotton socks made by true knitting using continuous thread appear in Egypt. [14] 1000s – The earliest clear illustrations of the spinning wheel come from the Islamic world. [20] 1100s-1300s – Dual-roller cotton gins appear in India ...
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]
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.
Indian cotton textiles were the most important manufactured goods in world trade in the 18th century, consumed across the world from the Americas to Japan. [76] The most important center of cotton production was the Bengal Subah province, particularly around its capital city of Dhaka .
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.
The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...