Three embarrassing question about pictures of a black hole

Astronomers (and all mankind) holiday: presents the first snapshot of a black hole. It was created using the Event Horizon Telescope (EHT), a virtual telescope, consisting of several radio telescopes around the world. The image demonstrates the material around the supermassive black hole at the center of the galaxy at a distance of 55 million light years. And Yes, a black hole is concentrated physics, crazy gravitational phenomena on the verge of possible and impossible extreme conditions. But have a few questions.

A black hole difficult to see, because she’s black?

No. I mean, Yes. It’s true: black holes are black. Usually we see all sorts of stars and things, because of the light they emit reaches our telescopes (or in our eyes), and we recorded. Black holes really are black. They do not emit visible light (due to the complex gravitational tricks), so they are not visible.

But it’s not a big problem. If the black hole we had in the Solar system, you’d have seen it. You could see the curvature of space with her presence and I could see a substance which revolves around this hole. If you saw the movie “interstellar“, it approximately definitely shows a visualization of a black hole — it was done with the help of astrophysicist Kip Thorne.

A black hole difficult to see because it’s tiny. Well, not so tiny like an ant, for example. It’s tiny in the sense that the person is tiny when you look at it from a distance of a kilometer. The best term would be the angular size. If you turn your head in a circle, you get 360 degrees (but don’t forget to turn the body, and the neck). If you hold your thumb at arm’s length, which is about half a degree angular dimension. The moon has about the same angular size, so you can cover it with your thumb.

What about the size of a black hole? Yes, it is huge. And yet it is at a distance of 55 million light years. This means that in order for the light to get that far, he will need 55 million years. It’s incredibly far away. But do we prevent the angular size. The black hole (at least its visible part) angular size — about 40 microarcsecond.

What is microarcsecond? As you know, the circle is divided into degrees (and long overdue). Each degree can be divided into 60 arc minutes, and each minute is 60 arcsecond. If arcsecond to break into a million pieces, you get microarcsecond. Remember that the angular size of the moon is 0.5 degrees (viewed from Earth)? This means that the angular size of the moon 45 million times larger than the size of a black hole. The black hole is tiny from the point of view of angular size.

But that’s not all. Due to diffraction we can’t see things the tiny angular sizes. When light passes through a hole (e.g., enters the telescope or eye), it dissipates. It’s bent in such a way that interferes with the rest of the light passing through the hole. In the case of the eye, it means that people can scan objects with an angular size of about 1 arcminute.

And it also means that something so tiny angular sizes, like a black hole, it is difficult to catch on photo.

How to overcome the diffraction limit?

For example. Things tiny angular sizes it’s really hard to see how then can we see the material around the black hole? The angular resolution of the telescope really depends on two things: the size of the hole and wavelength of light. The use of smaller wavelengths (such as ultraviolet or x-rays) gives the best resolution. But in this case, the telescope uses a wavelength of light in the millimeter range. This is a fairly large wavelength compared to visible light, which is in the range of 500 nanometers.

And this means that the only way to overcome the diffraction limit is to make the telescope bigger. That is what I did with Event Horizon Telescope. In fact, it is a telescope the size of the Earth. Crazy, but true. Getting data from multiple telescopes in different parts of the world, you can combine the data to turn them into data with a single GIANT telescope. However, I have to try. But with this method there are problems. With only a few telescopes, the EHT group uses a number of analytical techniques to create the most likely image from the data collected. So they managed to “draw” the material around the black hole.

This is really a photo of a black hole?

If you look through the telescope and see Jupiter, you can actually see Jupiter. Note: if you have not done this yet, you should definitely try. It’s cool. Sunlight is reflected from the surface of Jupiter, and then passes through the telescope in your eye. Boom. Jupiter. It is real.

But with the black hole slightly. The image you see, not even in the visible range. The radio image is created from wavelengths of light. What is the difference between radio waves and visible light? In fact, the only difference in wavelength.

Light and radio waves is electromagnetic waves. Is the spread of the changing electric field with a changing magnetic field (at a time). These waves move at the speed of light because they are light. However, as radio and visible light have different wavelengths, they interact differently with matter. If you turn on the radio at home, you will receive the signal from the nearest radio station. These radio waves pass right through walls. And visible — not tested.

The same applies to images. If you have no visible light from the object, you can see it with your eye and record the image on film or with a digital recorder. This image then can be displayed on the computer screen and, in fact, to consider. Like so you can see the moon.

With regard to the material around the black hole, it is not the visible image. Is the radio image. Each pixel in the picture represents a specific wavelength, but radio waves. Orange is a false color representation of a wave length of 1 millimeter. The same thing happens when we want to “see” the image in the infrared or ultraviolet range. We need to convert these wavelengths that we can see.

So this photo is of a black hole is not an ordinary photo. You will not be able to see it if you look in the telescope. But it’s still great. Really? Let’s discuss in our chat in Telegram.

0 Comments on “Three embarrassing question about pictures of a black hole”

  1. Hey, how’s it going?

    I want to pass along some very important news that everyone needs to hear!

    In December of 2017, Donald Trump made history by recognizing Jerusalem as the captial of Israel Why is this big news? Because by this the Jewish people of Israel are now able to press forward in bringing about the Third Temple prophesied in the Bible

    Jewish Rabbis have publicly announced that their Messiah will be revealed in the coming years who will be a leader and spiritual guide to all nations, gathering all igions under the worship of one God They deny Jesus as their Messiah, and the Bible tells us this Jewish Messiah will be the counterfiet that will bring about a false peace, and ultimatley the great tribulation

    They even printed a coin to raise money for the Temple with Donald Trumps face on the front and with king Cyrus'(who built the second Temple) behind him On the back of the coin is an image of the third Temple

    More importantly, the power that runs the world wants to put a RFID microchip in our body making us total slaves to them This chip matches perfectly with the Mark of the Beast in the Bible, more specifically in Revelation 13:16-18:

    He causes all, both small and great, rich and poor, free and slave, to receive a mark on their right hand or on their foreheads, and that no one may buy or sell except one who has the mark or the name of the beast, or the number of his name

    Here is wisdom Let him who has understanding calculate the number of the beast, for it is the number of a man: His number is 666

    Referring to the last days, this could only be speaking of a cashless society, which we have yet to see, but are heading towards Otherwise, we could still buy or sell without the mark amongst others if physical money was still currency This Mark couldn’t be spiritual because the word references two different physical locations If it was spiritual it would just say in the forehead RFID microchip implant technology will be the future of a one world cashless society containing digital currency It will be implanted in the right-hand or the forehead, and we cannot buy or sell without it! We must grow strong in Jesus AT ALL COSTS, DO NOT TAKE IT!

    Then a third angel followed them, saying with a loud voice, “If anyone worships the beast and his image, and receives his mark on his forehead or on his hand, he himself shall also drink of the wine of the wrath of God, which is poured out full strength into the cup of His indignation He shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb And the smoke of their torment ascends forever and ever; and they have no rest day or night, who worship the beast and his image, and whoever receives the mark of his name” (Revelation 14:9-11)

    People have been saying the end is coming for many years, but we needed two key things One, the Third Temple, and two, the technology for a cashless society to fulfill the prophecy of the Mark of the Beast

    Visit WWW BIBLEFREEDOM COM to see proof for these things and much more!

    If you haven’t already, it is time to seek God with all your heart Jesus loves you more than you could imagine He wants to have a ationship with you and redeem you from your sins Turn to Him and repent while there is still hope! God bless!

  2. Hey, how’s it going?

    I want to pass along some very important news that everyone needs to hear!

    In December of 2017, Donald Trump made history by recognizing Jerusalem as the captial of Israel Why is this big news? Because by this the Jewish people of Israel are now able to press forward in bringing about the Third Temple prophesied in the Bible

    Jewish Rabbis have publicly announced that their Messiah will be revealed in the coming years who will be a leader and spiritual guide to all nations, gathering all igions under the worship of one God They deny Jesus as their Messiah, and the Bible tells us this Jewish Messiah will be the counterfiet that will bring about a false peace, and ultimatley the great tribulation

    They even printed a coin to raise money for the Temple with Donald Trumps face on the front and with king Cyrus'(who built the second Temple) behind him On the back of the coin is an image of the third Temple

    More importantly, the power that runs the world wants to put a RFID microchip in our body making us total slaves to them This chip matches perfectly with the Mark of the Beast in the Bible, more specifically in Revelation 13:16-18:

    He causes all, both small and great, rich and poor, free and slave, to receive a mark on their right hand or on their foreheads, and that no one may buy or sell except one who has the mark or the name of the beast, or the number of his name

    Here is wisdom Let him who has understanding calculate the number of the beast, for it is the number of a man: His number is 666

    Referring to the last days, this could only be speaking of a cashless society, which we have yet to see, but are heading towards Otherwise, we could still buy or sell without the mark amongst others if physical money was still currency This Mark couldn’t be spiritual because the word references two different physical locations If it was spiritual it would just say in the forehead RFID microchip implant technology will be the future of a one world cashless society containing digital currency It will be implanted in the right-hand or the forehead, and we cannot buy or sell without it! We must grow strong in Jesus AT ALL COSTS, DO NOT TAKE IT!

    Then a third angel followed them, saying with a loud voice, “If anyone worships the beast and his image, and receives his mark on his forehead or on his hand, he himself shall also drink of the wine of the wrath of God, which is poured out full strength into the cup of His indignation He shall be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb And the smoke of their torment ascends forever and ever; and they have no rest day or night, who worship the beast and his image, and whoever receives the mark of his name” (Revelation 14:9-11)

    People have been saying the end is coming for many years, but we needed two key things One, the Third Temple, and two, the technology for a cashless society to fulfill the prophecy of the Mark of the Beast

    Visit WWW BIBLEFREEDOM COM to see proof for these things and much more!

    If you haven’t already, it is time to seek God with all your heart Jesus loves you more than you could imagine He wants to have a ationship with you and redeem you from your sins Turn to Him and repent while there is still hope! God bless!

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