Hogwarts and the Atypical Wizard

11pm.

Twenty-five little wizards gathered in the tallest tower in Hogwarts - the Astronomy Tower.

Several of the Muggle students knew Professor Sinistra, and apparently, they were all in charge of taking on new astronomy professors.

After the roll call, she said, "I think everyone has brought their binoculars.

The early stages of astronomy do not require a wand, so everyone, put away your wands now."

After everyone did as instructed, Professor Sinistra said, "Today is the beginning of our astronomy class, and the weather conditions are good, so we will study the closest celestial body to us, the moon.

Can anyone tell me what phase the moon is in today?

Miss Miss Strang, I see you have your hand raised."

Miss Trant is a girl from Ravenclaw, with outstanding appearance. She said in the crowd: "Today is a nearly first quarter moon, professor."

"Very good, Miss Tran is right, five points for Ravenclaw.

Today is a quasi-first quarter moon. You see, it appears in the western sky and in the evening or early night.

If you imagine the bright circle as the arm of a bow, and the line connecting the two ends of the virtual shadow on the other side as the bowstring, the bowstring will be in the east and slanted upwards, so it is called the waxing moon.

Likewise, the waning moon is easy to identify; it appears in the eastern sky in the late night and at dawn.

This is very important. If there is a moon in a photo, we can use this to determine the approximate time.

Of course, the waxing and waning moon refers specifically to the phase of the moon when the bowstring is in a straight line, and the rest of the time it can be called a crescent moon. "

Sainz thought to himself that the Gregorian calendar was indeed inferior to the lunar calendar in terms of the phases of the moon.

The lunar calendar is often called the lunar calendar for a reason. The "yin" here refers to the moon relative to the "sun", which is yang.

Although the lunar calendar is not an absolute lunar calendar, the lunar calendar does play a decisive role in it.

In the past China, as long as people looked up at the sky and saw the moon was a full round disk, they would definitely not be able to escape those days in the middle of the moon.

The Gregorian calendar, which uses the Gregorian calendar as the starting point for the year, is less accurate, as the full moon can appear on most days of the month.

It is quite difficult to judge what day it is by the phase of the moon.

There is another point about the lunar calendar. The waxing moon is the first half of the month in the lunar calendar. Similarly, the waning moon only appears in the second half of the month in the lunar calendar.

Of course, the Gregorian calendar has its own way of recording the phases of the moon, but it is relatively complicated.

However, to be fair, when it comes to longer time spans, such as one year, four years, ten years, one hundred years, etc., the Gregorian calendar is more accurate than the lunar calendar.

So it is understandable that most parts of the world use the AD calendar.

The real meaning of the lunar calendar is not this. Its real meaning is to guide agriculture and sericulture.

In his previous life, Science had made special observations and found that the accuracy of the 24 solar terms in the lunar calendar was simply shocking. Of course, the premise was that the area was located in the Yellow River Basin.

When we talk about White Dew, there will be white dew on the ground. When Frost Descent comes, there will be frost on the ground that night.

I don’t know how much effort the ancients spent to come up with such an accurate calendar.

It is not possible to summarize these contents overnight. A time node only comes once a year. How many years do we have to record it before we can find the pattern? !

My thoughts wandered away again.

The Moon is there, and wizards and Muggles can see it, and the same goes for the other stars.

This is the only subject that wizards and Muggles have in common.

Sainz didn't know whether the first person to invent the telescope was a wizard or a Muggle, but everyone was using it anyway.

At this time, the advantages of having a large population became apparent. Wizards studied astronomy, drew pictures, and tried to interpret the revelations in astronomy; Muggles had already sent astronauts to the moon.

Wizards disdain to understand Muggle technology, even astronomers like Sinistra.

Saiens still remembers it clearly, and she felt very sorry for the Muggles who used colorful pieces of paper as money.

Professor Sinistra asked everyone to point the telescope at the moon and observe the lunar surface.

"Now, everyone, take out your telescopes and point them at the moon. This is your first step in understanding astronomy. Then, take out your parchment and pens and draw what you see.

I hope everyone can finish it in class, so you don’t have to worry about your unfinished moon phase drawing on a weekend night when everyone else is dreaming. ”

Upon hearing this, everyone quickly spread out their parchment.

It is not so easy to draw a good picture.

“As long as you draw today’s crescent opening correctly and add a few representative craters, it will be a simple moon phase diagram.” Professor Sinistra lowered his requirements.

"After all, this is an astronomy class, not a painting class. I can't ask everyone to show all the details of the moon in a painting. As long as the picture you give can show that it is a moon, that's enough."

Even with such standards, not everyone can achieve it.

Some people drew it as a potato, some as a cell, and some people drew it as a triangle?!

"Sainz, how did you make the edges look so smooth and round?" Ben looked at Sainz and then at himself, feeling a little frustrated.

"I think there is a thing called a compass."

"What? What's called a round push?"

"It's not a compass, it's a pair of compasses! Here, this is it. Just turn it like this and wipe off half of it."

"Ah, I have to say, this is a great invention!" Ben seemed shocked.

Well~~this is the consequence of not having attended primary school.

Good or bad, in the end, everyone completed the astronomy class content for this week.

At 11:45, the astronomy class ended.

After class, the young wizards were a little excited and spoke in a slightly higher voice, waking up the portraits on the wall, and they protested.

Filch seemed to have no need to sleep and jumped out from somewhere.

"There are students wandering around at night. I caught them wandering around at night together. I must suggest to the principal to restore the previous punishment measures. Maybe there won't be so many people who don't follow the rules."

Suddenly a person jumped out from the darkness and the little wizards were all startled.

"Dear Administrator, we just came down from the Astronomy Tower. I think we were notified that we have fifteen minutes to get back to the dormitory after the astronomy class."

Sainz would not indulge him, "Or, Mr. Respected Administrator wants to keep us here until midnight, and then sentence us to a night tour."

"Yes, yes."

"We didn't make any mistakes, why are you stopping us?"

Filch glared at everyone fiercely and turned away. "I will keep an eye on you. There are always people who think they can escape detection and hide in a corner, but they don't know..."

Looking at Filch's back, Sainz's heart moved.