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  2. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    Naegele's rule is a standard way of calculating the due date for a pregnancy when assuming a gestational age of 280 days at childbirth. The rule estimates the expected date of delivery (EDD) by adding a year, subtracting three months, and adding seven days to the origin of gestational age.

  3. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    After months of labour filling perhaps fifty foolscap sheets with calculations "the truth stood revealed' (and) produced a satisfaction almost amounting to a religious experience". [19] Throughout the 1950s and 1960s, the slide rule was the symbol of the engineer's profession in the same way the stethoscope is that of the medical profession.

  4. Anesthesia - Wikipedia

    en.wikipedia.org/wiki/Anesthesia

    Anesthesia is a state of controlled, temporary loss of sensation or awareness that is induced for medical and veterinary purposes. It may include some or all of analgesia (relief from or prevention of pain), paralysis (muscle relaxation), amnesia (loss of memory), and unconsciousness.

  5. Blood alcohol content - Wikipedia

    en.wikipedia.org/wiki/Blood_alcohol_content

    Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes; it is expressed as mass of alcohol per volume or mass of blood.

  6. Census in Australia - Wikipedia

    en.wikipedia.org/wiki/Census_in_Australia

    The Census in Australia, officially the Census of Population and Housing, is the national census in Australia that occurs every five years. The census collects key demographic, social and economic data from all people in Australia on census night, including overseas visitors and residents of Australian external territories, only excluding foreign diplomats.

  7. Pteropus - Wikipedia

    en.wikipedia.org/wiki/Pteropus

    Based on the grey-headed flying fox's development, pups are born with some milk teeth already erupted: canines and incisors. By 9 days old, all the milk teeth have emerged, with a dental formula of 2.1.2.0 2.1.2.0 and a total of 20 teeth. By 140 days old (4.6 months), all the milk teeth have fallen and been replaced by permanent teeth.

  8. Tobacco smoking - Wikipedia

    en.wikipedia.org/wiki/Tobacco_smoking

    A number of studies have established that cigarette sales and smoking follow distinct time-related patterns. For example, cigarette sales in the United States of America have been shown to follow a strongly seasonal pattern, with the high months being the months of summer, and the low months being the winter months.

  9. Jim Morrison - Wikipedia

    en.wikipedia.org/wiki/Jim_Morrison

    James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer, poet and songwriter who was the lead vocalist of the rock band the Doors.Due to his wild personality, poetic lyrics, distinctive voice, unpredictable and erratic performances, and the dramatic circumstances surrounding his life and early death, Morrison is regarded by music critics and fans as one of the most ...