The four season’s spring, summer, autumn and winter did not always exist. They were created because they found it easier to dumb. A certain part of the year previously we were in our region only winter and summer, later adding the fall and spring at. A season is also a season called. We know the astronomical and meteorological seasons.
The astrological seasons are determined on the basis of the position of the sun relative to the earth.
What is a season?
A year is also called a season. We have four seasons: summer, autumn, winter and spring. Each season lasts three months. In many countries, it operates four seasons. In Indonesia, however, it has two seasons: the dry and the wet monsoon. Seasons are determined by the obliquity. This is the inclination of the equator relative to the ecliptic, the plane that makes the Earth in orbit around the sun.
There are two types of seasons: the astronomical and meteorological. The first is determined by the obliquity. The astronomical seasons are the seasons that we use to indicate in what season of the year we are. You often hear talk about the meteorological seasons. During weather these seasons begin on the first day of the month in which to start the astronomical seasons. A meteorological season so begins a little earlier. This has to do with the fact that the weather is often rather turns to the upcoming season.
Who invented it?
Seasons are not just happen. More than 3,000 years before Christ was already used a sundial. There was a stick stuck in the ground, where the sun was shining. The shadow appeared on the ground, go to the time display. This is sometimes called a shadow clock. Later on use was made of a water clock: fell drops of water in a bowl, and as soon as it was tough enough, it was turned on a wheel so that the shifted time. The timestamp was increasingly extended to current methods. The bells are now very accurate: this was obviously not the case previously. The difference is that a sundial indicates the true solar time. These include the sun moves over the 24 hours is not at the same speed. The current clock time to give an average (mean solar time).
In ancient Egypt it was used a calendar with 365 days. This calendar was based on the fact that a day consists of a full rotation around a sundial. Additionally, the ability of the position of the sun, the moon and the stars were in relation to the earth. After some time we found out that it takes 365 days for the whole cycle repeats itself again. Months are based on the revolution of the moon relative to the Earth. Seasons were granted by clear weather changes.
Why are there seasons?
Seasons are thought to indicate in which period of the year we are. Everyone knows that summer in the America stands for sun and heat, winter to cold and sometimes snow. Season Indications are, like monthly statements and the time for our own convenience. Seasons on Earth are the same in all areas. When it is summer in the America, it is in Africa or Australia just winter. This has to do with the fact that these countries are on the other side of the equator. Even the seasons are not all equal in terms of weather. In some countries, the summer was hot and dry, and winter can equally well be still warm. In Germanic regions, including the America at the beginning of the era also heard, were formerly used only two seasons: summer and winter.
Spring, summer, autumn and winter
The four seasons are:
Spring: starts on March 20 or March 21, and is determined on the basis of the fact that on that day the day and night are of equal length. The word spring is derived from ‘long’, and refers to it are from the days longer.
Summer: starts on June 20 or June 21, and determined that on that day the sun reaches its highest point and d day lasts the longest. The name is derived from the word “somer” meaning “in the middle of the year.”
Autumn: start around 22 or 23 September, and is just as spring determined that on that day the day and night are of equal length. Fall is derived from ‘Hervest’ or ‘harvest’, meaning ‘harvest’.
Winter: start at 21 or December 22, and has been determined that this is the shortest day of the year. Winter is derived from the Latin ‘HIEMS’ or ‘frost’ and means ‘storm’ or ‘freeze’.
It is often thought that in the winter away from the earth cedes the sun and it is therefore colder. This is just not the case in winter; the sun is closer to the earth. The earth is tilted more in the winter compared to the sun, so the sun’s rays have to make to reach the earth. Longer path Because of the tilt of the earth, it is on the other side of the earth just the opposite season.