The colours of the Sun - Contenido educativo

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Subido el 15 de mayo de 2024 por Maria Jesús T.

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In this project we will talk about the colours of the Sun and its relation with the rotational period.

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Hello! Have you ever wondered why we use different spectrums and colors to see the Sun? 00:00:00

And how can we study the Sun's rotational period with it? 00:00:05

What is the use of observing sunspots or solar flares? 00:00:09

The sunspots of the Sun are used to measure the rotational period of the Sun. 00:00:13

Using different spectrums or colors, we can observe the sunspots and understand the spectrum. 00:00:17

As a quick introduction, we are going to introduce the light spectrums. 00:00:23

The celestial objects radiate in wavelengths of the spectrum, but our eyes only see a very 00:00:27

little part of them. 00:00:32

The infrared spectrum of the light was discovered in the 1800s. 00:00:34

This spectrum emits energy in longer length waves since they have less temperature. 00:00:38

With the ultraviolet spectrum, this happens the other way around, and it is harmful for 00:00:43

living things. 00:00:47

X and gamma rays are also very energetic and are released by black holes or collisions. 00:00:49

The sun emits infrared and ultraviolet rays, which is partially why we see the sun is yellow 00:00:54

when it is actually in the green wavelength. 00:00:59

Blue light scatters more efficiently than red light in the atmosphere, so we perceive 00:01:01

the red light more. 00:01:05

Materials and methods. 00:01:08

We performed three experiments to see the light, spectrum, and its colors. 00:01:10

A spectrum detector. 00:01:15

We used a box of cereals, CD, and scissors. 00:01:16

First, you cut the CD and paste it in the bottom of the box. 00:01:20

Then, you make a hole in one wall and you make a small hole in the other wall so that the light can enter through it. 00:01:25

Finally, you look through the bigger hole and you will see the colors of the spectrum in the CD, which is usually a colorful rainbow. 00:01:32

A light dispenser. 00:01:40

We used a silicon bar and a lantern. 00:01:42

You just have to place the light of the lantern in the end of the silicon bar and watch the colors form along it. 00:01:44

It will be reddish closer to the light while the cooler colors disperse and are more visible along the end. 00:01:53

The theory of color. 00:02:02

We used three rolls of toilet paper, three colored transparent paper, one blue, one red and one green and three lights. 00:02:03

When we place the three lights with the colors, they demonstrate that the color theory is correct, forming white in the middle. 00:02:13

And now we will briefly explain the results of our experiments. 00:02:22

The first one was the spectrum detector. 00:02:25

Celestial objects radiate at many wavelengths of the laser magnetic spectrum, 00:02:27

but the human eye can only see a very small part of it, the visible region. 00:02:31

That is what we are trying to appreciate with this experiment. 00:02:35

The redder parts correspond to the infrared radio and microwave spectrum, 00:02:39

while the cooler parts correspond to UV, X and gamma rays, respectively. 00:02:43

The second experiment was a light disperser. 00:02:47

Once the silicon bar is placed on the flashlight of the phone, 00:02:50

we can see the blue photons scatter quickly, and the light that remains is yellow, and later even red. 00:02:53

The theory of color. All bodies are measured according to their temperature. 00:02:59

In this experiment, what we are trying to learn is how we can see the white color of the sun by using different frequencies of the spectrum. 00:03:03

Conclusion 00:03:10

While doing this project, we have learned that using different tools we can differentiate a wide variety of things about the sun. 00:03:11

Not all the light we can see is all there is. 00:03:18

Many wavelengths are not visible to the human eye. 00:03:21

The sun emits more than what we see, and even the light we see sometimes is deceptive. 00:03:24

The rotational period of the Sun is around 27.26 days. 00:03:30

To know this, we have performed some calculations with some spots images, 00:03:36

that consist of dividing data between two days and positions of the Sun spots. 00:03:41

The tool we used calculates the time difference between two spots, 00:03:47

so this way we know how much time it takes for the Sun to complete a rotation. 00:03:51

Analyzing its rotation, we can see it is much slower than most of the planets in the Solar System, 00:03:57

which are around Earth's speed of rotation. 00:04:03

Only Venus and Mercury are slower. 00:04:06

The differing spectrums of light led us to study the Sun's rotational period more efficiently 00:04:09

since we can study change in the Sun with different images taken with different wavelengths. 00:04:15

be discovering something new in its sunspots or solar flares with land-based and Earth-orbiting 00:04:22

solar telescopes. 00:04:28

As we can see, color and light are very connected and one complements the other. 00:04:31

After all, color and light are everywhere around us and we are constantly experimenting 00:04:37

with them both. 00:04:43

Isn't it fascinating? 00:04:45

Idioma/s:
Idioma/s subtítulos:
Autor/es:: Amèlie B., Elena G., Laura La., Laura Lo., Luz P.
Subido por:: Maria Jesús T.
Visualizaciones:: 4
Fecha:: 15 de mayo de 2024 - 10:18
Visibilidad:: Clave
Centro:: IES PRINCIPE FELIPE
Duración:: 04′ 50″
Relación de aspecto:: 4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:: 848x640 píxeles
Tamaño:: 38.56 MBytes