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World map of infant mortality rates in 2017. Infant mortality is the death of an infant before the infant's first birthday. [1] The occurrence of infant mortality in a population can be described by the infant mortality rate (IMR), which is the number of deaths of infants under one year of age per 1,000 live births. [1]
A lunar month is the time between successive recurrences of the same phase: due to the eccentricity of the Moon's orbit, this duration is not perfectly constant but averages about 29.5 days. The appearance of the Moon (its phase) gradually changes over a lunar month as the relative orbital positions of the Moon around Earth, and Earth around ...
The date of 4000 BC as the creation of Adam was at least partially influenced by the widely held belief that the Earth was approximately 5600 years old (2000 from Adam to Abraham, 2000 from Abraham to the birth of Christ, and 1600 years from Christ to Ussher), corresponding to the six days of Creation, on the grounds that "one day is with the ...
The birthday paradox refers to the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox: it seems wrong at first glance but is, in fact, true. While it may seem surprising that only 23 individuals are required to reach a 50% probability of a shared birthday, this ...
In the 200-meter freestyle final, Ledecky had over a half-second lead on the field at the halfway point before winning by 1.46 seconds with a meet record time of 1:55.74. Less than an hour later, Ledecky won the 800-meter freestyle, swimming under her world record pace for most of the race before touching in at 8:11.35, the second-fastest time ...
The dates are fixed at even intervals of months. In the Hindu calendar of tropical and subtropical India, there are six seasons or Ritu that are calendar-based in the sense of having fixed dates: Vasanta (spring), Grishma (summer), Varsha , Sharada (autumn), Hemanta (early winter), and Shishira (prevernal or late winter). The six seasons are ...
US adult passport with ten year validity Indonesian adult passport with five-year validity Old New Zealand passport showing the old validity period of five years. There is an increasing trend for adult passports to be valid for ten years, such as a United Kingdom passport, United States Passport, New Zealand Passport (after 30 November 2015) [1] or Australian passport.
His lead-off time was faster than the winning time in the individual 100-meter freestyle final later in the meet. Phelps set his first world record in the Championships in the 200-meter freestyle, his second race. Phelps won the gold ahead of Pieter van den Hoogenband and broke Ian Thorpe's six-year-old world record with a time of 1:43.86. [124]