Some see the ongoing business trips fantastic opportunity to break the routine, but the truth is far from it, The exploration work is very stressful, but may become "fatal", as some researchers believe.
Daily Bulletin
Date of publication: Wednesday 23/12/1436 AH - corresponding to 07/10/2015 AD (Updated) 1:45 (Mecca), 22:45 (GMT)
Tickle process involuntarily occur in some parts of the body due to external excitation, and there are some places more sensitive to tickle. But how does this process take place?
لدغدغة عملية لا إرادية تحدث في بعض أجزاء الجسم نتيجة إثارة خارجية، وقد تتسبب في ردة فعل معينة أو نوبات ضحك لا يتحكم بها الإنسان، وهناك بعض الأماكن أكثر تحسسا للدغدغة. لكن كيف تتم هذه العملية؟
The Gregorian Calendar's predecessor, the Julian Calendar (*), was replaced because it did not properly reflect the actual time it takes the Earth to circle once around the Sun, known as a tropical year or solar year.
Too many Leap Years
The reason why the Julian Calendar was out of step with the tropical year was the rule it used to define a Leap Year. The Julian Calendar had only one rule to determine whether a year would have 29 days in February instead of 28. If the year could be divided by 4 then it was considered to be a Leap Year. The Gregorian Calendar on the other hand has a more complicated rule for calculating what years will be Leap Years:
The year must be evenly divisible by 4;
If the year can be evenly divided by 100, it is not a Leap Year, unless;
The year is also evenly divisible by 400. Then it is a Leap Year.
These rules result in fewer leap years, minimizing the inaccuracies of the Julian Calendar.
