Who invented the atomic bomb? History of the atomic bomb. "Gifts" to descendants

Koh Kambaran. Pakistan decided to conduct its first nuclear tests in the province of Balochistan. The charges were placed in an adit dug in the Koh Kambaran mountain and blown up in May 1998. Local residents almost never look into this area, with the exception of a few nomads and herbalists.

Maralinga. The area in southern Australia where atmospheric testing took place nuclear weapons, was once considered sacred by the locals. As a result, twenty years after the end of the tests, a second operation was organized to clean up Maraling. The first was carried out after the final test in 1963.

Save In the Indian empty Thar state of Rajasthan on May 18, 1974, an 8 kiloton bomb was tested. In May 1998, charges were already blasted at the Pokhran test site - five pieces, among them a thermonuclear charge of 43 kilotons.

Bikini Atoll. Bikini Atoll is located in the Marshall Islands in the Pacific Ocean, where the United States actively conducted nuclear tests. Other explosions were rarely captured on film, but these were filmed quite often. Still - 67 tests in the interval from 1946 to 1958.

Christmas Island. Christmas Island, also known as Kiritimati, is distinguished by the fact that both Britain and the United States conducted nuclear weapons tests on it. In 1957, the first British hydrogen bomb was detonated there, and in 1962, as part of the Dominic Project, the United States tested 22 charges there.

Lobnor. At the site of a dried-up salt lake in western China, about 45 warheads were blown up - both in the atmosphere and underground. Testing was terminated in 1996.

Mururoa. The South Pacific atoll survived a lot - more specifically, 181 French nuclear weapons tests from 1966 to 1986. The last charge got stuck in an underground mine and, during the explosion, formed a crack several kilometers long. After this, the tests were terminated.

New Earth. The archipelago in the Arctic Ocean has been chosen for nuclear testing September 17, 1954. Since then, 132 nuclear explosions have been carried out there, including the test of the most powerful hydrogen bomb in the world, the Tsar Bomba, at 58 megatons.

Semipalatinsk. From 1949 to 1989 at least 468 nuclear tests were carried out at the Semipalatinsk nuclear test site. So much plutonium accumulated there that from 1996 to 2012, Kazakhstan, Russia and the United States conducted a secret operation to search for and collect and dispose of radioactive materials. It was possible to collect about 200 kg of plutonium.

Nevada. The Nevada Proving Ground, in existence since 1951, breaks all records - 928 nuclear explosions, of which 800 are underground. Considering that the test site is located only 100 kilometers from Las Vegas, mushroom mushrooms were considered quite a normal part of entertainment for tourists half a century ago.

So if you are looking for a way how to defuse a bomb in beholder, then most likely it has already exploded, or you are holding the game on pause. Let's figure out where to start and how to proceed.

Where to look for the bomb?

First you need to find the bomb in the house. We go down to the basement and find it in washing machine, which is on the left. After you have taken the bomb, run to the phone - "Dial the number" - "Report the bomb to the ministry."

bomb disposal

The Ministry will promise to send sappers to you. However, you do not have time and you will have to defuse the bomb. We learn from the ministry by phone about the types of bombs:

• MGB-53- 6 sticks of dynamite, 6 closed circuits, watch timer.
• NKVD-41- a flask with nitroglycerin, 1 closed circuit, a timer from an alarm clock.
• GUGB-43- pyroxylin powder, two closed circuits, a timer from an electronic clock.

After that, we return to the laundry, inspect the bomb (this will help you determine the type of bomb), and then defuse it using the instructions received.

Thus, problems with the task Tick-tock, boom! and bomb disarming in Beholder you shouldn't have.

It is no longer secret information that during the Cold War, about 50 nuclear warheads were lost, and not all of them remained lying in deserted areas.

In 1980, the US Department of Commerce published a report in which there were already 32 cases of loss of nuclear bombs. At the same time, the same documents were issued and navy under the Freedom of Information Act, which listed 381 incidents with nuclear weapons in the United States between 1965 and 1977. We have already read about 13 cases related to and one of them, which concerns the tragedy over the Spanish village of Palomares, is simply shocking.

Let's find out more about this case.

On January 21, 1968, a US Air Force B-52 strategic bomber crashed near the American base at North Star Bay. On board crashed aircraft had four such bombs. The plane broke through the ice and ended up on the seabed. Officially, the US authorities announced that all atomic bombs were raised from sea ​​day. However, in reality, only three bombs were discovered and recovered from the Arctic Ocean. And the fourth charge was never found.

So how was it...

The plane crash over the Thule base occurred on January 21, 1968, when, after a fire broke out on board the B-52 strategic bomber, the crew was forced to urgently leave the plane over the Thule Air Force Base in Greenland and the unmanned plane crashed 12 km from the base. The bomber performed combat patrols as part of Operation Chrome Dome (English) and carried four thermal nuclear bombs B28FI (English). As a result of the crash of the aircraft left by the crew, thermonuclear munitions were destroyed, causing radiation contamination of the area. Subsequently, reports appeared in the press, based on declassified documents, that during the search work, fragments of only three of the four bombs on board were found, and the fate of the fourth remains unknown.

1. Flight mission

Since 1960, the US Air Force Strategic Command has been conducting Operation Chrome Dome, which consisted of constant combat patrols in the air of strategic bombers with thermonuclear weapons on board, in readiness to strike targets in the USSR. Since 1961, as part of the operation, tasks have been carried out under the code name "Hard Head" (Eng. Hard Head) for visual observation of radar station at the Thule Air Base, which served as a key component of the BMEWS missile early warning system. The purpose of "Hard Head" was to obtain a prompt assessment of the situation in the event of a loss of communication with the station. The aircraft operating under this mission also carried thermonuclear bombs.

Set of four thermonuclear bombs B28

2. Disaster

On January 21, 1968, a B-52G bomber belonging to the 380th bomber wing flew from Plattsburgh Air Force Base, located in Plattsburgh, New York, to the next patrol according to the Hard Head plan. strategic aviation USA. The captain of the ship was Captain John Hogue. On board, in addition to five full-time crew members, were a replacement navigator, Captain Chris Curtis, and a spare (third) pilot, Major Alfred D "Mario.

Before departure, D "Mario put on the heating system vent, under the seat of the navigator-instructor in the aft part of the lower deck, three foam rubber, fabric-covered pillows, and shortly after departure, another one. The flight passed without incident, with the exception of in-flight refueling from the tanker KC-135, which had to be manually produced due to autopilot problems.

About an hour after refueling, the commander ordered the co-pilot, Captain Leonard Svitenko, to change for rest, and Major D "Mario to take his place. Since it was cold in the cockpit, D" Mario opened the air intake valve from the engine air path to the heating system. Due to a technical malfunction, the hot air from the turbine was practically not cooled when it entered the heating system, and soon it became very hot in the cabin, and the foam cushions folded under the seat ignited. It smelled like burning rubber. The crew began to search for the source of the smell, and the navigator, having examined the lower deck twice, discovered a source of ignition. Attempts to extinguish the flames with two fire extinguishers were unsuccessful, and at 15:22 EST, when the plane was 140 kilometers from Thule Air Base, Captain Hog ​​transmitted a distress call and requested permission for an emergency landing. Within five minutes, all fire extinguishers on board were used up, the power supply was cut off, and the cockpit was filled with smoke to such an extent that the pilots could not distinguish the instrument readings. The commander of the ship, realizing that it would not be possible to land the car, ordered the crew to leave the plane. Four crew members ejected as soon as D "Mario confirmed that the plane was directly above the base. They were followed by the pilots - Hog himself and D" Mario. Co-pilot Svitenko, left without an ejection seat, tried to leave the car through the lower hatch, but received a fatal head injury.

The unmanned aircraft flew north for some time, then turned 180° and crashed onto the ice of North Star Bay at 15:39 EST. On impact, the conventional fuses in all four bombs exploded, and although there was no nuclear explosion, the radioactive components were scattered over a large area. The ignited aviation fuel melted through the ice and the wreckage went to the bottom of the ocean.

Hog and D "Mario landed directly on the territory of the air base with a difference of ten minutes and immediately informed the base commander that at least six crew members managed to eject, and that there were hydrogen bombs on board the crashed B-52. Rescuers managed to find the rest of the survivors The longest search was for Captain Curtis, who left the plane first and landed at a distance of 9.7 km from the base.He was found only after 21 hours and suffered from hypothermia (the air temperature reached -31 °), but managed to survive, wrapped parachute.

Aerial reconnaissance of the crash site, carried out almost immediately, was able to detect only six engines, a tire and small debris on the ice. The incident was classified as Broken Arrow, a code for a non-war threatening nuclear incident.

Loading contaminated ice into tanks

3. Crested Ice Project

Explosions and fire destroyed most debris scattered over an area approximately 4.8 km long and 1.6 km wide. Parts of the bomb bay were found 3.2 km north of the crash site, indicating that the aircraft began to break down while still in the air. The ice at the impact site was broken, forming a polynya with a diameter of about 50 m. South of the impact point, burning jet fuel left a blackened spot 670 by 120 m, this area was most contaminated with spilled JP-4 fuel and radioactive elements, including plutonium, uranium, americium and tritium, the plutonium concentration reached 380 mg/m².

American and Danish services immediately began work to clean up and decontaminate the area. The project was officially codenamed Crested Ice, and (unofficially among the members) Dr. Freezelove. The goal of the project was to complete the work before the spring thaw, in order to prevent radioactive contamination of the ocean.

The head of the operation was appointed US Air Force General Richard Hunziker (eng. Richard Overton Hunziker). To ensure round-the-clock operation in the immediate vicinity of the crash site, the "Huntziker Camp" was created, consisting of residential igloos, a power plant, a communications center and a helicopter port. Two ice roads were laid to communicate with the air base. Later, several prefabricated houses, a trailer with decontamination equipment and a public latrine were installed.

To control the decontamination of people and equipment, on January 25, a “ zero line"- the border of the contamination zone measuring 1.6 by 4.8 km (1 by 2 miles), within which alpha decay was recorded. The operation was carried out in extreme weather conditions, average temperature air was about -40 ° Celsius, periodically dropping to -60 °, the wind speed reached 40 m / s. Since the accident occurred during the polar night, they had to work under artificial lighting, the first sunrise took place only on February 14.

With the help of graders, contaminated snow and ice from the accident site were loaded into wooden containers. The containers were stockpiled at a site near the air base, and then reloaded into steel tanks, which were sent by sea to the United States. The fragments of the hydrogen bombs were sent to the Pantex plant in Texas for examination, and the disposal tanks were sent to the Savana River nuclear repository in South Carolina.

The Air Force monitored levels of airborne contamination through respirator checks. Of the 9837 respirators assembled, 335 registered alpha decay, but within allowable norms. The level of plutonium contamination was checked using urine tests, and no traces of plutonium were found in any of the 756 samples taken.

The operation ended on September 13, 1968, when last tank was loaded on a ship bound for the United States. A total of 2,100 m3 (55,000 gallons) of radioactive liquid and 30 tanks of various materials, some of which were also infected. By the end of the project, 700 American and Danish specialists, as well as more than 70 US government agencies, took part in it. The cost of the operation is estimated at $9.4 million ($58.8 million in 2010 prices).

Submersible Star III

4. Search for bombs

In August 1968, an underwater search was organized for the remnants of hydrogen bombs, especially the uranium shells of the second stages, using underwater vehicle Star III (Eng. Star III). The real goals of the operation were classified, the instruction prescribed in discussions with the Danes to mention the operation as "exploring the ocean floor at the crash site." Underwater work was associated with significant technical difficulties and was interrupted ahead of schedule. As a result of the search, one practically intact uranium shell and fragments were found, which together correspond to two more, and some minor details. The fourth shell was not found. An Atomic Energy Commission document dated September 1968 indicated that the fourth shell was believed to be in "a heap of massive debris found at the bottom".

Operation Chromedome

Operation Chrome Dome was greatly scaled down after the Palomares disaster, and finally abandoned after the Thule incident, as the costs and risks associated with the operation were reassessed as unacceptable. Intercontinental ballistic missiles land-based and sea-based have become for the United States the main means of ensuring nuclear parity.

After the disasters over Palomares and Thule, in which a conventional explosion led to the dispersion nuclear materials, the researchers concluded that the explosive used in the construction of the bombs was not stable enough to withstand the conditions of a plane crash. It was also found that the electrical circuits of the safety devices are not sufficiently reliable, and in the event of a fire there is a risk of a short circuit. These conclusions served as an impetus for the start of a new stage of research and development work to improve the safety of nuclear weapons.

Livermore National Laboratory has developed the so-called Susan Test to test explosives for stability. The test consisted of firing a special projectile at a sample of explosives placed on a hard metal surface. By 1979, Los Alamos National Laboratory had developed a new "low-sensitivity" high explosive for use in nuclear devices. Ray Kidder (English), an American physicist and designer of nuclear weapons, argued that if the bombs had been equipped with new explosives during the Palomares and Thule disasters, the explosions would not have happened.

It's been 40 years...

Bomber pilot John Hogue, almost half a century after the incident, spoke about what happened: "The situation got out of control. A fire started in the cockpit, and after five minutes we had practically no control over the car. For the first time in my life, I had to send an SOS signal." Another pilot of the crashed B-52, Joe Di-Amario, testifies: "We only had a few minutes to reach military base in Tula [Greenland], we even saw landing lights, but the situation rapidly deteriorated. The car could not be saved."

For local residents, the incident was a shock. When the plane crashed, the fuel tanks detonated. An eyewitness to the crash, who watched the plane crash from the shore, said: "I saw an explosion. At first, nothing was heard, but I saw a monstrous explosion." Another witness of the B-52 crash shared his recollection of what he saw: "We were sitting in a bar. It was a typical Sunday morning when the news came that a plane with nuclear bombs had crashed into the ocean, breaking through the ice. People were shocked."

Immediately after the crash, search teams were equipped. Hundreds of thousands of cubic meters of radioactive snow and ice were removed from the crash site. They searched for a long time, even a submarine came to the place where the bomber crashed. Three nuclear charges were found and successfully defused, but the fourth bomb was never found, although it was officially announced that all the consequences of the crash were eliminated, the bombs were found and raised from the seabed.

An eyewitness to the incident, a local resident, recalls: "We were young and were happy to help the US military. They collected the remains of the aircraft and equipment, loaded everything into containers and took it to the base. We were not told much about how things really were."

Everyone who took part in the rescue operation was thanked, and the case was closed, having been archived under the heading "secret" for a long 40 years. Now the secrecy period established by US law has expired, and it has become clear that Greenland has been living on a nuclear bomb for the past 40 years.

In fact, only three bombs were discovered and recovered from the Arctic Ocean. And the fourth charge was never found. This is evidenced by a declassified American government video obtained by the Air Force.

According to the documents, by the end of January, one of the blackened sections of ice in the area of ​​the accident was visible. The ice there froze again, and through it the outlines of the weapon's parachute were visible. By April, it was decided to send a Star III submarine to the area of ​​the incident to search for the lost bomb, registration number 78252. The real purpose of the submarine's arrival was deliberately hidden from the Danish authorities, the Air Force notes.

"The fact that this operation involves the search for an object or a missing piece of a weapon must be treated as a confidential NOFORN (which means not to be disclosed to any foreign country),” reads one of the documents dated July.

Meanwhile, the underwater search was not crowned with success. At first, various technical problems prevented this, and then winter came. It was decided to stop the search operation, the documents say. They also say that the missing part of the weapon contained such radioactive elements like uranium and plutonium.

And now, as the BBC notes, locals are concerned that the bomb has corroded under the influence of salt water and poses a huge threat to the environment.

sources

So, let's say a low-yield nuclear bomb exploded in your city. How long will you have to hide and where to do it in order to avoid consequences in the form of radioactive fallout?

Michael Dillon, a scientist at the Livermore National Laboratory, spoke about radioactive fallout and how to survive. After numerous studies, analysis of many factors and possible development events, he developed a plan of action in the event of a disaster.

At the same time, Dillon's plan is aimed at ordinary citizens who have no way to determine where the wind will blow and what the size of the explosion was.

small bombs

Dillon's technique for protecting against has so far been developed only in theory. The fact is that it is designed for small nuclear bombs from 1 to 10 kilotons.

Dillon argues that everyone now associates nuclear bombs with the incredible power and destruction that could have happened during the Cold War. However, such a threat seems less likely than terrorist attacks using small nuclear bombs, several times less than those that fell on Hiroshima, and simply incomparably less than those that could destroy everything if it happened. global war between countries.

Dillon's plan is based on the assumption that after a small nuclear bomb, the city survived and now its inhabitants must escape from radioactive fallout.

The diagram below shows the difference between the range of a bomb in the situation Dillon is investigating and the range of a bomb in the Cold War arsenal. The most dangerous area is shown in dark blue (the psi standard is the psi that is used to measure the force of an explosion; 1 psi = 720 kg/m²).

People who are within a kilometer of this zone are at risk of receiving a dose of radiation and burns. The range of radiation hazard from the explosion of a small nuclear bomb is much less than from Cold War thermonuclear weapons.

For example, a 10 kiloton warhead will create a radiation threat 1 kilometer from the epicenter, and radioactive fallout can travel another 10-20 miles. So it turns out that a nuclear attack today is not instant death for all living things. Maybe your city will even recover from it.

What to do if the bomb exploded

If you see a bright flash, do not go to the window: you may get hurt while looking back. As in the case of thunder and lightning, the blast wave travels much more slowly than the explosion.

Now you have to take care of protection from radioactive fallout, but in the event of a small explosion, you do not need to look for a special isolated shelter. For protection, it will be possible to hide in an ordinary building, you just need to know which one.

30 minutes after the explosion, you must find a suitable shelter. In half an hour, all the initial radiation from the explosion will disappear and the main danger will be radioactive particles the size of a grain of sand that will settle around you.

Dillon explains:

If at the time of the disaster you are in an unreliable shelter that cannot provide tolerable protection, and you know that there is no such building nearby, within 15 minutes, you will have to wait half an hour, and then go look for it. Before you enter the hideout, make sure you are not radioactive substances the size of sand particles.

But what kind of buildings can become a normal shelter? Dillon says the following:

There should be as many obstacles and distance as possible between you and the consequences of the explosion. Buildings with thick concrete walls and roofs a large number of earth - for example, when you sit in the basement, surrounded on all sides by earth. You can also go deep into large buildings in order to be as far as possible from open air with the consequences of a disaster.

Think about where you can find such a building in your city and how far it is from you.

Maybe it's the basement of your house, or a building with a lot of interior space and walls, with bookshelves and concrete walls, or something else. Just choose buildings that you can reach within half an hour and don't rely on transport: many will flee the city and the roads will be completely clogged.

Let's say you got to your shelter, and now the question arises: how long to stay in it until the threat has passed? The films show different paths of events, ranging from a few minutes in a shelter to several generations in a bunker. Dillon claims that they are all very far from the truth.

It's best to stay in the shelter until help arrives.

Considering that we are talking about a small bomb with a radius of destruction of less than a mile, the rescuers must react quickly and begin the evacuation. In the event that no one comes to help, you need to spend at least a day in the shelter, but still it is better to wait until the rescuers arrive - they will indicate the desired evacuation route so that you do not jump out to places with high level radiation.

The principle of operation of radioactive fallout

It may seem strange that you are allowed to leave the shelter after a day, but Dillon explains that the biggest danger after the explosion comes from early radioactive fallout, and they are heavy enough to settle within a few hours after the explosion. As a rule, they cover the area in the immediate vicinity of the explosion, depending on the direction of the wind.

These large particles are the most dangerous because of the high levels of radiation that will ensure the immediate onset of radiation sickness. In this they differ from the smaller doses of radiation that can be caused many years after the incident.

Taking refuge in a shelter will not save you from the prospect of cancer in the future, but it will prevent quick death from radiation sickness.

It is also worth remembering that radioactive contamination is not a magical substance that flies around and penetrates anywhere. There will be a limited region with a high level of radiation, and after you leave the shelter, you will need to get out of it as soon as possible.

This is where you need rescuers who will tell you where the border of the danger zone is and how far you need to go. Of course, in addition to the most dangerous large particles, many lighter ones will remain in the air, but they are not capable of causing immediate radiation sickness - what you are trying to avoid after an explosion.

Dillon also noted that radioactive particles decay very quickly, so that being outside the shelter 24 hours after the explosion is much safer than immediately after it.

Our pop culture continues to savor the theme of nuclear, which will leave only a few survivors on the planet who have taken refuge in underground bunkers, but a nuclear attack may not be as devastating and large-scale.

So you should think about your city and figure out where to run if something happens. Maybe some ugly concrete building that has always seemed to you a miscarriage of architecture will someday save your life.

In 1961, the Soviet Union tested a nuclear bomb of such magnitude that it would have been too large for military use. And this event had far-reaching consequences of various kinds. That very morning, October 30, 1961, a Soviet Tu-95 bomber took off from the Olenya air base to Kola Peninsula, in the far north of Russia.

This Tu-95 was a specially improved version of an aircraft that had entered service a few years earlier; a large, sprawling, four-engine monster that was supposed to carry an arsenal of Soviet nuclear bombs.

During that decade, there were huge breakthroughs in Soviet nuclear research. Second World War put the US and the USSR in the same camp, but the post-war period was replaced by a cold in relations, and then their freezing. And the Soviet Union, which was faced with the fact of rivalry from one of the world's largest superpowers, had only one choice: to join the race, and quickly.

On August 29, 1949, the Soviet Union tested its first nuclear device, known as "Joe-1" in the West, in the remote steppes of Kazakhstan, assembling it from the work of spies who infiltrated the American program. atomic bomb. During the years of intervention, the test program quickly took off and began, and during its course, about 80 devices were blown up; in 1958 alone, the USSR tested 36 nuclear bombs.

But nothing compares to this ordeal.

The Tu-95 carried a huge bomb under its belly. It was too large to fit inside the aircraft's bomb bay, where such munitions were normally carried. The bombs were 8 meters long, about 2.6 meters in diameter and weighed more than 27 tons. Physically, she was very similar in form to the "Kid" and "Fat Man" dropped on Hiroshima and Nagasaki fifteen years earlier. In the USSR, she was called both "Kuzkina's mother" and "Tsar Bomba", and the last name was well preserved for her.

The Tsar bomb was not the most common nuclear bomb. It was the result of a feverish attempt by Soviet scientists to create the most powerful nuclear weapon and thereby support the desire of Nikita Khrushchev to make the world tremble with power. Soviet technology. It was more than a metal monster, too big to fit even the largest aircraft. It was the destroyer of cities, the ultimate weapon.

This Tupolev, painted bright white to reduce the effect of a bomb flash, has reached its destination. Novaya Zemlya, a sparsely populated archipelago in the Barents Sea, above the frozen northern reaches of the USSR. The pilot of the Tupolev, Major Andrey Durnovtsev, delivered the aircraft to the Soviet test site at Mityushikha to an altitude of about 10 kilometers. A small advanced Tu-16 bomber was flying nearby, ready to film the impending explosion and take air samples from the explosion zone for further analysis.

In order for two aircraft to have a chance of surviving - and there were no more than 50% of them - the Tsar Bomba was equipped with a giant parachute weighing about a ton. The bomb was supposed to slowly descend to a predetermined height - 3940 meters - and then explode. And then, two bombers will be already 50 kilometers from it. This should have been enough to survive the explosion.

The Tsar bomb was detonated at 11:32 Moscow time. At the site of the explosion formed fire ball nearly 10 kilometers wide. The fireball rose higher under the influence of its own shock wave. The flash was visible from a distance of 1000 kilometers from everywhere.

The mushroom cloud at the site of the explosion grew 64 kilometers in height, and its hat expanded until it spread 100 kilometers from edge to edge. The sight must have been indescribable.

For Novaya Zemlya, the consequences were catastrophic. In the village of Severny, 55 kilometers from the epicenter of the explosion, all the houses were completely destroyed. It was reported that in the Soviet regions, hundreds of kilometers from the zone, the explosions caused damage of all kinds - houses collapsed, roofs sagged, windows flew out, doors were broken. The radio was out of service for an hour.

"Tupolev" Durnovtsev was lucky; the blast wave of the Tsar Bomba caused the giant bomber to fall 1,000 meters before the pilot could regain control of it.

One Soviet operator who witnessed the detonation recounted the following:

“The clouds under the plane and at a distance from it were illuminated by a powerful flash. The sea of ​​light parted under the hatch and even the clouds began to glow and became transparent. At that moment, our plane was between two layers of clouds and below, in the crevice, a huge, bright, orange ball bloomed. The ball was powerful and majestic, like. Slowly and quietly he crept up. Having broken through a thick layer of clouds, it continued to grow. It seemed to suck the whole earth. The spectacle was fantastic, unreal, supernatural.”

The Tsar Bomba released incredible energy - now it is estimated at 57 megatons, or 57 million tons of TNT equivalent. This is 1,500 times more than the two bombs dropped on Hiroshima and Nagasaki, and 10 times more powerful than all the munitions used during World War II. The sensors registered the blast wave of the bomb, which circumnavigated the Earth not once, not twice, but three times.

Such an explosion cannot be kept secret. The United States had a spy plane a few dozen kilometers from the explosion. It contained a special optical device, the bhangemeter, useful for calculating the strength of distant nuclear explosions. Data from this aircraft - codenamed Speedlight - was used by the Evaluation Group foreign weapons to calculate the results of this secret test.

International condemnation was not long in coming, not only from the United States and Great Britain, but also from the USSR's Scandinavian neighbors such as Sweden. The only bright spot in this mushroom cloud was that since the fireball did not touch the Earth, there was surprisingly little radiation.

Everything could be different. Initially, the Tsar Bomba was conceived twice as powerful.

One of the architects of this formidable device was the Soviet physicist Andrei Sakharov, a man who would later become world famous for his attempts to rid the world of the very weapons he helped create. He was a veteran Soviet program on the development of atomic bombs from the very beginning and became part of the team that created the first atomic bombs for the USSR.

Sakharov began work on a multilayer fission-fusion-fission device, a bomb that creates additional energy from nuclear processes in its core. This involved wrapping deuterium, a stable isotope of hydrogen, in a layer of unenriched uranium. Uranium was supposed to capture neutrons from burning deuterium and also start a reaction. Sakharov called her "puff". This breakthrough allowed the USSR to create the first hydrogen bomb, a device much more powerful than the atomic bombs had been a few years before.

Khrushchev instructed Sakharov to come up with a bomb that was more powerful than all the others that had already been tested by that time.

The Soviet Union needed to be shown that it could get ahead of the US in the nuclear arms race, according to Philip Coyle, former leader nuclear weapons testing in the United States under President Bill Clinton. He spent 30 years helping create and test atomic weapon. “The US was way ahead because of the work they had done preparing the bombs for Hiroshima and Nagasaki. And then they did a lot of atmospheric tests before the Russians did their first.”

“We were ahead and the Soviets were trying to do something to tell the world that they were worth reckoning with. The Tsar Bomba was primarily meant to make the world stop and recognize the Soviet Union as an equal,” says Coyle.

The original design - a three-layer bomb with uranium layers separating each stage - would have had a yield of 100 megatons. 3000 times more than the bombs of Hiroshima and Nagasaki. The Soviet Union had already tested large devices in the atmosphere, equivalent to several megatons, but this bomb would have become simply gigantic compared to those. Some scientists began to believe that it was too big.

With such a huge force, there would be no guarantee that a giant bomb would not fall into a swamp in the north of the USSR, leaving behind a huge cloud of radioactive fallout.

This is what Sakharov feared, in part, says Frank von Hippel, a physicist and head of the Department of Public and international relations Princeton University.

“He was really worried about the amount of radioactivity the bomb could create,” he says. “And the genetic implications for future generations.”

"And that was the beginning of the journey from bomb designer to dissident."

Before the tests began, the layers of uranium that were supposed to disperse the bomb to incredible power were replaced by layers of lead, which reduced the intensity of the nuclear reaction.

The Soviet Union created powerful weapon that scientists were unwilling to test it at full power. And the problems with this destructive device were not limited to this.

Tu-95 bombers designed to carry nuclear weapons Soviet Union, were designed to carry much lighter weapons. The Tsar Bomba was so large that it could not be placed on a rocket, and so heavy that the planes carrying it would not be able to deliver it to the target and stay with the right amount of fuel for the return. And in general, if the bomb were as powerful as it was intended, the planes might not return.

Even nuclear weapons can be too many, says Coyle, who is now a senior official at the Center for Arms Control in Washington. “It is difficult to find a use for it, unless you want to destroy very big cities he says. "It's just too big to use."

Von Hippel agrees. “These things (large free-falling nuclear bombs) were designed so that you could destroy a target from a kilometer away. The direction of movement has changed - towards increasing the accuracy of missiles and the number of warheads.

The tsar bomb led to other consequences. It caused so much concern - five times more than any other test before it - that it led to a taboo against atmospheric nuclear weapons testing in 1963. Von Hippel says Sakharov was particularly concerned about the amount of radioactive carbon-14 that was being released into the atmosphere, an isotope with a particularly long half-life. It was partially mitigated by carbon from fossil fuels in the atmosphere.

Sakharov was worried that the bomb, which would be larger than the tested one, would not be repelled by its own blast wave - like the Tsar Bomba - and would cause global radioactive fallout, spread toxic dirt throughout the planet.

Sakharov became an outspoken supporter of the 1963 partial test ban and an outspoken critic of nuclear proliferation. And in the late 1960s, missile defense which, he rightly believed, would spur a new nuclear arms race. He was increasingly ostracized by the state and went on to become a dissident, who in 1975 was awarded Nobel Prize world and called "the conscience of mankind," says von Hippel.

It seems that the Tsar Bomba caused precipitation of a completely different kind.

According to the BBC