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Abu Kamil's irrational numbers — was an Egyptian scientist who's considered to be the first mathematician to systematically use and accept irrational numbers as solutions and coefficients to equations. [315] Da'irah al-Mu'addal An astronomical device invented by the Egyptian scientist 'Abd al-'Aziz al-Wafa'i. [316]
Toothpaste comes in a variety of colors and flavors, intended to encourage use of the product. The three most common flavorants are peppermint, spearmint, and wintergreen. Toothpaste flavored with peppermint-anise oil is popular in the Mediterranean region. These flavors are provided by the respective oils, e.g. peppermint oil. [18]
A man brushing his teeth while looking in a mirror. Tooth brushing is the act of scrubbing teeth with a toothbrush equipped with toothpaste.Interdental cleaning (with floss or an interdental brush) can be useful with tooth brushing, and together these two activities are the primary means of cleaning teeth, one of the main aspects of oral hygiene. [1]
The Egyptians invented and used many simple machines, such as the ramp and the lever, to aid construction processes. They used rope trusses to stiffen the beam of ships. Egyptian paper, made from papyrus, and pottery were mass-produced and exported throughout the Mediterranean Basin.
We've all been there, whether it's with a family member or significant other, there's no escaping the inevitable toothpaste dispute. Man posts photo that perfectly illustrates the great toothpaste ...
The miswak is a teeth-cleaning twig made from the Salvadora persica tree. The miswak's properties have been described thus: "Apart from their antibacterial activity which may help control the formation and activity of dental plaque, they can be used effectively as a natural toothbrush for teeth cleaning.
Other information comes from the images that often adorn the walls of Egyptian tombs and the translation of the accompanying inscriptions. Advances in modern medical technology also contributed to the understanding of ancient Egyptian medicine. Paleopathologists were able to use X-rays and later CAT Scans to view the bones and organs of mummies.
The earliest chew sticks have been dated to Babylonia in 3500 BCE [3] and an Egyptian tomb from 3000 BCE; [2] they are mentioned in Chinese records dating from 1600 BCE [3] In the Ayurvedas around 4th century BCE and in Tipitaka, in the Buddhist Canon around the 5th century BCE in India.