# EVERYDAY SCIENCE

## SCIENCE

### NATURE OF SCIENCE

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Omar Khayyam introduced the Jalali Calendar which was in error of one day in ____ years (the Gregorian calendar has an error of one day in 3330 years).
 A 3350 B 3660 C 3770 D 3700
Explanation:

Detailed explanation-1: -The Jalali calendar working according to the solar year gives an error of one day in 5, 000 years, while today’s civil Gregorian calendar gives an error of one day in 3, 330 years. Khayyam died on Dec 4, 1131 and is buried in the Khayyam Garden in Nishapur .

Detailed explanation-2: -He was a famous astronomer and invented Jalali Calendar became the base of other calendars and is also known to be more accurate than the Gregorian calendar.

Detailed explanation-3: -The Gregorian calendar, which we use today, is partly based on his work. Khayyam’s calendar, however, is more accurate because an error occurs only on one day in every 3770 years. In the Gregorian calendar, an error happens on one day in every 3236 years.

Detailed explanation-4: -Omar Khayyam was an Islamic scholar who was a poet as well as a mathematician. He compiled astronomical tables and contributed to calendar reform and discovered a geometrical method of solving cubic equations by intersecting a parabola with a circle.

Detailed explanation-5: -Omar Khayyam (1048-1123) was a Persian mathematician, philosopher, astronomer and poet, today most famous for his Rubaiyat, a spirited and profoundly humanistic celebration of life, love and liquor!

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