The Infinity Sign Drawn by the Sun: Analemma

of the sun It shows itself from the east during the day and moves towards the west and at noon top We know it’s on point. When we end the subject with this, naturally, the Sun is stable throughout the year. on the line There is a perception that it is progressing. But in fact, this issue is very different from what one might think.

In fact, the Sun in a year eight (8) sign drawing progresses. The figure encountered upon completion of this drawing at the end of the year is analemma is called. In order to see this situation, which most people are not aware of, we need to think more broadly and include two factors.

The first of these interconnected factors is the orbit of our planet around the Sun:

The Earth moves a little faster, approaching the Sun at certain times of the year, and slower at other times. That’s a circle around the Sun rather than a circle. an elliptical orbit due to monitoring. of analemma width is the result of this movement. When the world accelerates, we see that a greater part emerges.

Our second factor is axial tilt:

Let’s briefly explain what this is. The Earth has both an axis of rotation and an orbital axis as it revolves around the Sun. between these two to the angle we call it axial tilt. Earth’s axial tilt is approx. 23.5 degrees because it is not vertical as in the image above, slightly crooked somehow it spins around itself.

Thanks to this axial tilt, seasons The days are changing, the days are getting longer and shorter, and the position that the Sun can reach in the sky changes over time. 21 June and 21 December we’ve all heard of it. On these days, when the longest days begin in the Northern and Southern hemispheres, respectively, the Sun reaches its highest point and opposite direction takes the right action.

So in the image you see below, the dots at the ends roughly correspond to these two days. Those in the northern hemisphere see the smaller portion at the top, while those in the southern hemisphere see the opposite:

Now let’s play around with the terms a bit: What would the Analemma look like if our orbit were circular rather than elliptical?

In this case, where we turn the orbit into a perfect circle and leave the axis tilt as it is, eight One part of the figure would be large while the other would not be small. Instead of both are the same size would be.

Let’s say we left our orbit elliptical. What would Analemma be like if the axis had not been tilted, that is, if the Earth was not tilted but straight?

In this scenario, the eight form is completely said goodbye we would be Instead the sun is in the sky ellipse would follow a path.

Finally, what would the Analemma look like if the Earth had no axial tilt and its orbit around the Sun was circular?

If this scenario the most boring we can say. Because the position of the Sun at a certain time during the year would always be the same. So photographers who want to capture this moment, at the end of the year from the point couldn’t get more.

So how is the situation on other planets:

Analemma is based on the two factors we have just mentioned, namely the watched to the shape of the orbit and axial tilt connected. In other words, on planets where these two are in different combinations, different traces are formed from the eight shapes we see from Earth. The movement of the Sun during the year on other planets is as follows:

• Mercury: Single point since 1 day equals 2 years
• Venus: Ellipse
• World: 8 or infinity sign
• Anthem: Pick shape
• Jupiter: Ellipse
• Saturn: tear
• Uranus: Eight
• Neptune: Eight
• Pluto: A giant eight

Analemma can also be created by following the movements of the ‘Moon’ as well as the Sun.

You can share your thoughts on the subject in the comment section.

resources: Mathematical, Evolutionary Tree, Forbes, Love the Night Sky