When were you born?
Newton's Birth Date and The Anni Mirabiles It's usually said that Isaac Newton was born on Christmas Day, but there is some ambiguity in this because England was still using the "old" Julian calendar at the time of Newton's birth, whereas the rest of Europe had adopted the "modern" Gregorian calendar later adopted by England and still in use today.
According to the modern calendar, Newton was born on 4 Januarybut according to the calendar in force at the time and place of his birth, he was born on 25 December It's been speculated that this fact held some significance for the mystical side of Newton's imagination, and helps to explain his fascination for biblical interpretation, since he can hardly have failed to notice that he was born on Christmas Day with no worldly father - his natural father Robert, a farmer, having died some 3 months before Isaac's birth.
An even trickier question is whether Newton was born in the same year Galileo died as is commonly said. But when placed on the same calendar the two events fall in different years. To make things even more confusing, many English of that time still considered March 25 to be the first day of the calendar year, so by the old English reading of the Italian calendar, Galileo died in Incidentally, since Einstein was known to have revered Maxwell, could it have escaped his notice that he was born in the same year Maxwell died?
Originally the Romans considered the year to begin on March 1, which is the reason February the "last" month of the year is truncated at 28 days, and is used to sneak in an extra day every four years. This also explains why the prefixes of our month names are all "off" by two, i.
The Romans officially recognized January 1 as the first day of the year in BC, but it didn't catch on everywhere right away. By the way, it's interesting to note that the "Julian period" not to be confused with the Julian Calendar well known to historians and astronomers, was named not after Julius Caesar, but after the father of Joseph Scaliger, who in devised the scheme by which each day is consecutively numbered beginning with January 1, BC, which Joseph thought would cover everything of interest.
Another ambiguous date associated with Newton is his famous "annus mirabilis", or year of miracles, around This was the period during which Isaac, having been sent home from college because of the Plague epidemic, occupied his time by inventing calculus, discovering the chromatic composition of light, and conceiving of the inverse-square law of universal gravitation Of course, it must be remembered that in later life Newton was embroiled with priority disputes, most notably with Robert Hooke over optics and the inverse-square law of gravity, and with Leibniz over the Calculus.
Thus, it was always in Newton's self-interest to place his discoveries as early as possible. The documentary evidence suggests that, at least with regard to mechanics and gravitation, his ideas hadn't actually reached a coherent state until much later, aroundwhen he was actually composing the Principia.
Nevertheless, it's clear that Newton devoted himself intensively to the study of mathematics and physics during the intermission from Cambridge, but it's often been pointed out that his burst of activity should really be called "anni mirabiles", since it covered the time from toand much of that time he was actually at Cambridge.
The school closed in the summer of '65, and Newton returned in March of '66 when the school was re-opened after the plague had gone dormant over the winter. The plague re-appeared so Cambridge was closed again in June of ' This time it remained closed until April of '67, when Newton again returned to Trinity college.
Notwithstanding the caveat mentioned above about Newton's vested interest in recalling early dates for his discoveries, it's still interesting to read his famous recollection of his activities during these years.
All this was in the two plague years of and Although he says his results "answer pretty nearly", it seems that at the time he was dissatisfied with the disagreement between his rough calculation and his observations.
His surviving notes from the late 's show that he was using an estimate of 60 miles per degree of latitude. He had gotten this from Galileo's writings, and Galileo had used this figure because that's what sailors of that time commonly used.
Now, similar to the conflict between the calendars of Italy and England, they also used different definitions of a "mile". The Italian mile was feet, whereas the English mile was feet.
Newton was aware of this difference, so he tried his calculation both ways, but it still gave a result for the Moon's orbit that implied an object at the Earth' surface should fall only According to William Whiston, "this made Sir Isaac suspect that this Power was partly gravity and partly that of Cartesius's Vortices", so he "threw aside the Paper of his Calculation and went on to other studies".
Similarly, Henry Pemberton heard Newton say that "his  computation did not answer his expectations, so he concluded that some other cause must at least join with the action of the power of gravity on the moon".
Not long afterwards, inthe French astronomer Jean Picard determined with very accurate measurements that one degree of latitude equals He supposedly rushed home and excitedly repeated his earlier computation, this time finding it "perfectly agreeable to the Theory".
However, in the introductory guide to his modern English translation of the Principia, I. Cohen contends that these calculations cannot be seen as the origin of the theory of universal gravitation. His argument is that The theory of gravitation is based on the central concept of a universal force.
In the s, Newton was considering something quite different, namely, a Cartesian endeavor, or "conatus," rather than a force, and certainly not a universal force. This endeavor was centrifugal, or directed outward, tending to produce an outward displacement, one having a direction away from the central body.
Universal gravity is centripetal, directed inward, tending to produce an inward displacement. I find this reasoning incomprehensible.Emergency Medical Responder Training. STUDY. PLAY. Allergies Medications Past Pertinent Medical History Last Oral Intake The part of the patient care report that includes the patient's name, address, date of birth and sex is the: Patient Data Section.
Narrative writing should contain what? To know Horoscope, one should have an accurate date of birth, time of birth and place of birth details. Date of birth helps to find planetary positions for the day. Time of birth and place of birth helps to find Ascendant and other house positions.
In this study, Wjst and colleagues tried to further understand the effects of latitude and birth date on the prevalence of allergy defined by markers such as allergic rhinitis, sensitization to grass or dust, and total IgE levels.
Month of birth as a latitude-dependent risk factor for multiple sclerosis in Norway Date of birth, sex and place of birth of patients with MS and their unaffected siblings born within 5 years of the patients’ birth were retrieved from the Norwegian Population Registry (Statistics Norway).
Month of birth as a latitude-dependent risk. Some studies found birth month influence on allergy risk wanes with age. In a study, birch pollen allergy risk was higher in those born between February and April from among Finnish children (3).
Risk differences flat-lined by the age of 20 years. Latitude:: South Enter longitude and latitudes of your birth place or of a place nearest to your birth place. Click Here to know your birth place's longitude, latitude and time zone.