What Is The Loudest Sound Ever Made? | Answers With Joe

This video is backed by bright, the tree falls in a forest and there is no one to hear it, does it make a

sound

? This was the question asked by George Berkeley and in 1710, okay, the tree falls in a forest and there is no one to hear it. Does it make a

sound

? This was a question asked by Thais. If a tree falls in a forest and no one is there to hear it. It makes a sound. Yes. This is the question. Is it okay who says? You're looking directly at me. I'm looking at a tree Oh,

what

do you know?

You're not as stupid as you seem. Okay, someone put a walkie-talkie in the tree and this is bothering me. There's no, oh God, there's no walkie-talkie friend, it's just you and me and your very human-centered view of the world that you think just because there's no human being there to hear it that the laws of physics stop exist I mean the incredible nerve is just a philosophical argument about the nature of oh God God, I'm talking to the tree, yes, yes, you're talking to a tree, a tree that can feel and perceive things, but can you?

No. I point my leaves towards the sky because I can't perceive sunlight, of course I can perceive. Things sound low, come on, if it's loud enough, the sound is just a pressure wave strong enough to rip off some leaves, huh, but the sound of a tree falling would be enough to rip off your leaves, huh, oh, You think about that, look, now you know. You gotta give me the silent treatment huh, that's right, take that, oh God, I'm talking to a tree. Oh my God, Jake is one, oh, it's amazing

what

I'm doing now with my front face hole that's doing things that are being.

Gathered by the side holes of your face. I am communicating complex ideas and thoughts by manipulating the density of air molecules at microscopic scales and I do this by pushing air through two vibrating fins in my throat, so this is something trees n

ever

could. Of course, all of these words and ideas only gain meaning once they are processed in the brain. Our ears simply collect sound information in the same way that our eyes collect visual information and that sound information is usually represented by a transverse wave like this. Yes, you get the idea. through, but that's not how sound actually travels to air, you know, air particles don't just move up and down in space, the peaks and valleys of the transverse shape, actually represent particle densities high and low in the air, sound really travels.

In a longitudinal wave, as this animation shows, a pressure wave forces particles back and forth in and out of high and low densities. If you follow the red dots in the image you can see that they don't travel with the wave, they just transport it almost like people doing a wave at the football game and that is how sound travels through all forms of matter. In fact, the greater the density of matter, the faster the wave travels through the air. It is actually one of the slowest means for sound to travel through pressure waves. four times faster in water and four times faster than in something solid like, say, steel, and of course in space there is no sound because there is no matter for that sound to travel through and, just like only we can see certain wavelengths of light which we call the visible range of the electromagnetic spectrum there are only certain wavelengths of sound the weak ones here and sound measured in hertz no one does it better than the earth actually hertz is just a measurement of wavelengths and cycles per second, so you might focus on that basis, but anything below 20 Hertz per second you probably won't hear because it's considered subsonic, it's too low for humans to hear, although you can't feel it in your body, at the high end we can hear

ever

ything up to about 20,000 Hertz or 20 kilohertz. anything about that is considered ultrasonic but of course we're not here to talk about pitch, we're here to talk about volume and that is measured in decibels, decibels or decibels as it is sometimes pronounced, named after Alexander Graham Bell, who invented things like the metal detector in the telephone, the telephone and was also honorary president of the second international eugenics congress because now we can't have anything nice.

The interesting and sometimes difficult thing to understand about decibels is that they are actually measured logarithmically. scale, so 20 is actually 10 times larger than 10 30 is actually a hundred times larger than 10, so, just for context, leaves blowing in the wind can be about 10 decibels, as can Rain can be 40 decibels in a normal conversation, it can be approximately 60 decibels a day. A loud restaurant might be around 80 decibels and when you go up to 200 decibels you are now entering chainsaw territory. This is the area where long term exposure can cause hearing loss and at around 110 decibels, that is the noise level my parents were okay with when I told them. they wanted to go to film school when you get to 130 decibels you start to feel pain this is about how loud it could be in the front row of a rock concert the fireworks are at about 150 and 160 is where you can find an explosion This is also the area where single exposure to levels of that volume can cause hearing damage and one of the

loudest

things a human being can do is launch a rocket at around 180 decibels and if you have ever been in a rocket launch, you know. even from miles away that's loud in fact that's why they sprayed the launch pad with thousands of gallons of water just to deaden the sound because without it it could melt the concrete and destroy the launch apparatus just the sound now technically it's this one hundred and eighty.

Decibel blasts are the

loudest

things humans can do because above 100 to 95 decibels it is no longer considered sound, it just breaks down completely into a simple shock wave and since gunpowder was invented in the east from Asia around 1211, we have been really good at producing shock waves, the loudest sounds created by humans has to be the nuclear tests we did during the Cold War, in total, I have conducted 2121 nuclear tests, some of them under the water, some underground, some of them in the air all bad ideas the last two nuclear bombs that were openly tested were Kessel bravo for the United States 15 megaton nuclear bomb and then you probably know where the Tsar Bomb was going the Tsar Bomb or as the Russians called it Ivan was the largest nuclear explosion ever detonated, it was an experimental 50 megaton bomb tested on October 30, 1961 on Severny Island.

Fun note: it was actually called the tsar bomb as some sort of inside joke because they already had a ridiculously huge cannon called the tsar cannon and a huge bell called the tsar bell. There are so many crazy facts about this bomb that I'm not even going to try to put it into it. no dialogue here for you, i'll just read it to you, he created a fireball five miles wide that was seen a thousand miles away the heat from this thing was so strong it could cause third degree burns at 62 miles away it registered a mind-blowing 220 decibels it was a hundred times louder than a Saturn five rocket the pressure wave it created registered on seismometers as a 5.0 earthquake this thing broke windows 560 miles away 560 miles just for context this is how You see my 560 mile radius from my hometown of Dallas all in that gray circle broken windows Look, we've seen videos of other nuclear explosions, they're all epic, but I mean, the Tsar Bomba is on another level, it was so crazy that The United States, Great Britain and the Soviet Union signed a nuclear test ban. two years later a treaty was signed banning all atmospheric testing of nuclear weapons, so everything went underground after that, fortunately we haven't been in any nuclear wars since then, so that's the loudest sound produced by the man so far and it might be a good place to stop, that was the idea behind this video.

I wanted to say what was the loudest sound humans have ever

made

, but hey, why stop there? Because with all our arrogance and all our perceived self-importance we can't keep a candle to Mother Nature so let's move on Joe needs bigger breasts In August 1883 the islands of Java and Sumatra had a major boom the Krakatoa volcano erupted with an index volcanic explosiveness of six, which is a terribly small number if you consider that it exploded with a force of two hundred megatons of TNT. Remember that this was 50 megatons, so there were like four of those that exploded at the same time.

It measured 230 decibels to the sailors. 65 kilometers away their eardrums were blown out and it was heard as far as the island of Rodrigues, near Mauritius, four thousand seven hundred eighty kilometers west of the explosion. In fact, the sound wave traveled around the world possibly three or four times, Unfortunately the explosion killed more than 36,000 people, both from the massive shock wave and from the tsunamis that occurred when the caldera collapsed into the sea, 165 coastal towns in Java and Sumatra were literally erased by a wall of water of one hundred and twenty feet tall. Krakatoa by the way is still active, this footage here was taken in 2018, so if you think 2020 can't get any worse, it's not over yet, as massive as the Krakatoa explosion was, that wasn't the biggest explosion that Indonesia had ever seen, in fact, it was not the largest explosion in that century, Tambora, another volcano in Indonesia exploded in 1815 with an estimated force of 800 megatons, making it four times larger than Krakatoa, which was four times the Tsar Bomb and they didn't keep records that well back then, but it is estimated that if it was four times bigger than Krakatoa and Krakatoa was 230 decibels and this would probably be around 250 decibels being logarithmic and all and where Krakatoa killed 36,000 people Tambora killed up to 70,000 people and then spewed so much ash into the atmosphere that global temperatures dropped for years.

In fact, 1816 became known as the year without a Summer, I'll let you discover why An even more interesting fact, due to some of the strange weather phenomena that occurred that year, author Mary Shelley and her husband Percy Shelley were huddling in the villa switzerland of a friend of his. His name was Lord Byron and so they spent the time they played to see who could come up with the scariest story and the scariest story that came out of that night came from Mary Shelley who later became Frankenstein and that's probably as far as we can go in In terms of explosions, we could actually estimate in terms of decibels, but there were a few explosions recorded in history before we had the ability to measure things like that.

Krakatoa actually had another explosion in the 5th century AD. which literally split the island of Sumatra in two and may have ushered in the Middle Ages, but the one that takes the cake for me is the Thira explosion which took place on the island we now call Santorini in Greece and is considered, in many ways, the greatest. explosion in recorded human history Krakatoa and Tambora may have killed tens of thousands of people, but the Thira explosion wiped out an entire civilization and may have been a contributing factor to the end of the Bronze Age. The collapse of the Bronze Age is something I've talked about. elsewhere is completely fascinating to me, it all took place around 1177 BC.

C. and basically there were several centuries-old civilizations that were around the Mediterranean and they all collapsed in a period of like a hundred years. There are other factors that led to these collapses besides the Thira explosion, but in some ways it helped destabilize the region; in fact it was so big that it was recorded in Egypt and in China it could be the most influential explosion in all of human history, except possibly one. If Thira was the largest explosion recorded in the entire history of humanity, the next question is what is the largest explosion that could have been witnessed by a human being and for that we have to talk about the Toba supervolcano.

Yes, we are just here. Entering super volcano territory, the Toba supervolcano is again located in Indonesia, which appears to be the tectonic anus of the world and occurred 70,000 years ago, so it is possible that a human was present to witness this, but studies Of the eruption they theorized that it expelled up to 2,800 cubic kilometers of ash into the air compared to Krakatoa, it expelled 21 cubic kilometers. Towba was larger and there are some who theorized that all that ash created an ice age that almost completely wiped out humans. I've talked about this in a previous video, but genetic studies have shown that there was a bottleneck in the human species around the same time as the Toba supervolcano, for a time there were only a few humans walking on the earth, we were a species endangered, now the theory of the Toba catastropheIt has been hotly debated whether or not it may have been what caused that bottleneck, but regardless of that explosion, it easily has to be the largest explosion that humans could have heard, of course, humans have only ever existed. during a small part of the story.

On this planet there were definitely some larger explosions that occurred before this that would qualify as a much larger sound than anything we have ever heard. This definitely challenges the whole philosophical argument of does sound matter if there is no person there to hear it? If a tree falls in the forest, blah, blah, blah, well, for the purposes of this, let's accept that yes, if a tree falls in a forest or if the world suffers explosive volcanic diarrhea, then yes, it distinguishes us even if There is no person there, it is probably like that. What do you think?

I'm going to talk about Yellowstone, but no, I won't accept that. The Yellowstone supervolcano eruption was epic, no doubt, but if you want to talk about the largest explosion to ever occur on planet Earth, you have to go. bigger and you have to go to space the Chicxuluben crater the Yucatan peninsula in Mexico is the site of the most catastrophic explosion in the history of the Earth 66 million years ago an asteroid between 11 and 81 kilometers wide crashed into the earth this explosion wiped out the dinosaurs and 75% of all life on the planet the force of a hundred million megatons being hit by that shock wave even thousands of miles away would have vaporized you.

This changed everything about life on Earth by getting rid of the dinosaurs and giant reptiles, leaving room for smaller mammals to evolve and grow. eventually we became giant sloths we chose a giant sloth everything has gone downhill from there now if you want to expand the definition of sound even further we can talk about the theta hypothesis this is the idea that the early proto-earth was hit by an object the size of Mars called fea that eventually created the moon now the reason I say this stretch is the definition of sound is because if we say that sound is the pressure wave that travels through the air at this point in our history we probably didn't have an atmosphere yet, so what expands the definition?

But let's get on with it now. The reason scientists think this happened is because when we brought things back from the moon, the composition of the soil and rocks on the moon bore a striking resemblance. Compared to the Earth's mantle, the Moon is also extremely large in size in proportion to the Earth's, so it is unlikely that we would have trapped it in the gravitational well, and if we had, it would probably have altered it somewhat. our orbit, so it's not so This is the case, but think for a second about the types of pressures and forces involved, if two planets collided with each other, it would have completely turned our planet into a mantle again.

This has to be the biggest boom in the history of the planet. The Earth is like anything bigger and the Earth would no longer be here, of course the Earth is just a solitary speck and an infinite void, even Theia's hypothesis and the big picture are nothing compared to supernovas, stars of neutrons from Hyper Nova, the black holes that collide on September 14. In 2015, the LIGO Gravitational Wave Observatory recorded the first gravitational waves resulting from the collision of two black holes 1.4 billion light years away. Each black hole was millions of times the mass of our Sun and when they collided they released energy in the end.

Twenty milliseconds was 50 times more than all the light produced by all the stars in the observable universe and we actually have a sonic representation of this and it sounds like this, in case you missed it let me play the largest explosion ever recorded in humans. ready story I know awesome now of course the biggest explosion in the universe was probably the Big Bang and I know you're probably thinking Joe the Big Bang doesn't count what it doesn't count because if you consider sound If it were a pressure wave through matter, then this definitely doesn't count because there was no matter to speak of and it wasn't so much an explosion as it was an expansion of spacetime that eventually slowed down but continues to this day, which is why not Is there really a center to the universe?

All time and space are expanding outward at all points at all times. So if you are a narcissist and you have to think that you are the center of the universe, you are strangely right, but the Big Bang. It produced an incredible amount of force that can still be seen in the microwave background radiation. Now I know you want to listen, although we are talking about sounds, is there a way to hear what the Big Bang sounds like? Well, John Kramer at the University of Washington believes that he found a way to do it, all he had to do was increase the background signal, the microwave background radiation, a hundred septillion times, but he did it.

He took the findings from the CMB's Planck satellite maps and came up with this. This is the sound of the Big Bang, the Big Bang was pretty much the ultimate hype, so the sound gets pretty complicated, from microscopic variations and air densities to shock waves that can destroy entire planets. We've been able to take this information and give you a better understanding of our universe through it, plus it's fun to make things explode. Maybe now, when you hear the rustling of leaves or the crack of a shotgun in the distance, you'll better understand what you're hearing and how it all works, seeing that knowledge is fun gives you many more of those moments Oh, if you enjoy those moments Oh, you really want to check the physics of the everyday, a course that you can find in brilliant the physics of the everyday.

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