After a two-month stay on the International Space Station, astronauts Bob Behnken and Doug Hurley safely splash down in a SpaceX Crew Dragon capsule off the Florida coast. Governments worldwide have offered support, including the UK, France, Australia, the US, Canada and Israel. Massive blast in Beirut sends shockwaves across city A general view shows the damage at the site of Tuesday's blast in Beirut's port area, Lebanon August 5, … Oxygen is the key to ammonium nitrate’s deadly habit of exploding, and given that 47 known, major, accidental ammonium nitrate explosions have occured in the last century, it is undeniably a habit. The pressure wave, slower than the 343 meters per second speed of sound, caused destruction, horror, confusion, shattered glass, torn-apart flat surfaces, and disorientation for onlookers as their ears were subjected to the rapid pressure fluctuations. On August 4, 2020, a massive explosion blasted deadly waves through downtown Beirut. The enormous blast could be heard some 125 miles away in Cyprus after it erupted in the port area of Beirut. A shock wave goes from zero pressure to its absolute maximum pressure in literally zero seconds. By the evening of 5 August, the death toll had reached 135, with nearly 5,000 wounded. The first reports out of Beirut suggested fertilizer may have once again been the culprit. From Beirut too, will gradually emerge stories of heroism and savvy, along with the final accounting of lives lost. Watch SpaceX's Crew Dragon Capsule Splash Down in Gulf of Mexico. Shocks, because of their fascinating and complex physics, travel faster than the speed of sound, and they cause far more damage than pressure waves. At least 100 people are dead and 4,000 are injured after a massive explosion on Tuesday shook the capital city of Beirut — with Lebanon continuing its search for survivors on Wednesday. George, a boy that was born as the blast wave hit the hospital, is seen after birth in Beirut, Lebanon, on August 4, 2020, in this picture obtained from social media. On Tuesday evening in Lebanon’s capital city of Beirut, two huge explosions in its port sent an enormous blast wave across the city, killing at least 137 people and injuring around 5,000 more. We spoke to promoters and DJs picking up the pieces, Signs of life detected in remains of building by port in Lebanon’s capital were of fellow rescuers, Available for everyone, funded by readers. He says as sunlight bounces around within the cloud of contaminants, other, less determined wavelengths get refracted off in different directions. Medical personnel dealt with as many of the first, second, and even third waves of injured patients as fast as humanly possible, some of them even creating makeshift treatment centers on trains. I outline an alternative approach using Open Street Map data to create a 3D model of Beirut and the explosion to analyze directional blast damage. By measuring the times at which the pressure wave reaches these landmarks on the video, we know that, as it blazed down the pier, its rampage occurred at a speed of only 312 meters per second. But in the meantime, between those who filmed the blast and the application of physics, we can prevent any escalation of conspiracy theories or misunderstandings. “We have enough inventory and boats on their way to cover the needs of Lebanon on the long term.”. Then by the time the audible crash and mayhem reached the formerly peaceful and picturesque outdoor bar, it had slowed to at most 289 meters per second. Ammonium nitrate is … A massive explosion in Beirut, Lebanon, sent shock waves across the ground, triggering an estimated magnitude 3.3-4.5 earthquake. Flat, delicate, frangible, and installed in large sheets, glass is the perfect target for a blast wave of even minuscule magnitude; it shatters and flies easier than any other substance. “There is no bread or flour crisis,” he said. When ammonium nitrate is manufactured as fertilizer, it is mixed with other chemicals that usually stop this reaction from happening, though as the 2013 explosion at the West Fertilizer Company proved, those chemicals are not always successful. A string of explosions Seismological data suggests that six blasts … (The ships that exploded in the harbor were known to be carrying high explosives, which by their nature always make shock waves.) At 6:08 PM, on Tuesday 4 August 2020, a catastrophic explosion took place at the Port of Beirut caused by the detonation of about 2,750 metric tons (3031 US short tons) of ammonium nitrate (equivalent to around 1.1 kilotons of TNT) that had been stored … Lebanon’s prime minister, Hassan Diab, said the cause of the explosion was 2,750 tonnes of ammonium nitrate. A massive blast on 4 August has caused widespread damage in the port area of the city of Beirut in Lebanon, with 100 people reported dead and 4000 injured. So, Beirut was at minimum a thousand times more boom than Oklahoma City. Based on the viewing angle and distinctive red chairs pictured in some of the later frames, I traced one of the Beirut videos posted by The Guardian to its filming location on the rooftop terrace of La Mezcaleria Rooftop Bar, and measured it to be 885 meters from the center of the blast. © 2020 Guardian News & Media Limited or its affiliated companies. The breakthroughs and innovations that we uncover lead to new ways of thinking, new connections, and new industries. It was, sadly, tragically, history repeating itself yet again: Explosives can be devastatingly lethal, and we should never underestimate their destructive fury. Beirut’s governor, Marwan Abboud, said damage from the blast extended over half of Beirut, with the cost of damage likely to be above $3bn. They rushed in to help. To a blast expert, the videos, with their roiling cloud of black and red curling over the pier of Beirut, scream “ammonium nitrate.”. On Thursday the French president, Emmanuel Macron, visited the city. He said Lebanon was facing a political and economic crisis and that it would continue to suffer unless it enacted reforms. Lebanese rescue workers searched for survivors in the mangled wreckage of buildings and investigators blamed negligence for a massive warehouse explosion that sent a devastating blast wave across Beirut, killing at least 113 people. Then, video of the fireball rippled around the world almost as quickly. But accidental explosions are far less tidy, and their sloppy combustion also produces ash, particulates, and gross black charred contaminated matter. That’s slow for a bomb. But a shock wave could have caused them to drop dead from lung trauma as they watched. Reports indicate that the blast killed at least 30 people and injured 2,500 others. An explosive with a pure burn, like any explosive used in military-grade weaponry, will produce smoke that looks equally pure: snowy, billowy white, or sometimes a pale grey. The more mundane explosions are rarely this size, but the same principles of physics and chemistry apply. 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