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Diamonds are not forever
(8) | 08/07/2022 | Translate: How some diamonds can be vented, using a torch and oxygen.
Building a simple hydrogen generator The user of Youtube "Skill Make", he shows us how he makes a generator from old batteries that decomposes water into hydrogen and oxygen, to create hydrogen gas.- Ignition of a layer of smoke A large plume of smoke ignites above firefighters during a training exercise. This phenomenon is called fire explosion (backdraft) and is an explosion caused by the rapid re-introduction of oxygen to an enclosed fire, where previously there was a lack of oxygen.
- A firefly up close Fireflies are characterized by their use of bioluminescence to attract mates or prey. The chemically produced light in their abdomen can be colored yellow, green or faint red. The enzyme luciferase acts on luciferin in the presence of magnesium ions, ATP and oxygen to produce light.
- Special diving suit for a worker A worker works under water, taking oxygen from a bucket being held over the head by a colleague.
- A leaf produces oxygen A mango leaf in water under a microscope, shows how it produces oxygen by releasing bubbles.
- Making liquid air At about -200 ° C, the air which consists mainly of oxygen and nitrogen, can be concentrated in liquid.
- Cutting solid steel with a thermal lance The thermal lance or oxygen combustion rod, is a tool that uses the exothermic reaction of steel and compressed oxygen to cut metals or reinforced concrete.. The end of the steel tube is first heated to a high temperature and then oxygen is compressed in the tube. This causes an exothermic reaction in which the end of the tube melts (> 4000 °C) and cuts other materials with oxygen.
- A man catches fire in an elevator On Friday, November 27, 2020 in Orenburg, Russia, a man recklessly set fire to a flammable liquid with a lighter (antifreeze for windshields containing ethanol). He then fought the flames for a few seconds before losing consciousness due to lack of oxygen.. Fortunately the doors opened, and the man having regained consciousness, he was able to get out of the elevator with his feet on the fire. He was taken to hospital after suffering burns on the 1st, 2nd and 3rd degree in 30% of his body.
- Explosion of oxygen cylinders due to fire On October 31, 2020 in the city of Chelyabinsk, Russia, a fire caused a powerful explosion of some oxygen cylinders stored in a shed. There were no victims.
- Physics experiment at school A physics teacher does an experiment with an empty container, which is filled with a flammable gas and set on fire. He then covers his mouth, and this is compressed. The fire removes the oxygen inside the container, resulting in a pressure difference. There is higher atmospheric pressure outside the container than low pressure inside it. so the container is compressed.
- Shield water against a fire explosion Using a hose, two firefighters forming a water shield for protecting a fire blast. The fire blast is an explosion caused by rapid reintroduction of oxygen to a fire in an enclosed environment, where previously there was a lack of oxygen. A phenomenon particularly dangerous for firefighters, when opening doors or windows in a closed burning building.
- Optical illusion: the perpetual diamond Diamond remains stable in one place, but appears to move upward, downwards, left or right. See how far you sit from your screen before the phenomenon disappeared. Source.
- Backdrafts in slow motion And Slow Mo Guys, Our Gav and Dan offer some impressive shots from fire explosions in slow motion and 4K resolution. The fire explosion (backdraft) is an explosion caused by rapid reintroduction of oxygen to a fire in an enclosed environment, where previously there was a lack of oxygen. For example, breaking a window or opening a door in a closed space with the fire, can cause this dangerous phenomenon.
- Special blanket for extinguishing fires in cars In Norway, Bridgehill AS the company has developed a special blanket used to quickly extinguish a fire in a car. The car fire blanket can quickly isolate the car to prevent the spread of fire. Easily fitted by two people and smothers the fire by depriving it of oxygen, also reducing smoke emissions.
- Firefighters are injured by the phenomenon of backdraft Night Wednesday, December 12, Firefighters were victims of a fire explosion impressive during a fire in Queens, New York. Seven firefighters and five others were injured slightly. The fire explosion can be caused by the sudden ignition of a limited oxygen in the atmosphere (a closed space with fire) saturated with noncombustible gases and graphite particles, which receives a sudden large amount of oxygen.