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Background Radiation Presentation

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Background Radiation

Transcript: Ionising radiation vs. Non-ionising radiation How to detect radiation Exposure What is background radiation? Background radiation is all around us. Some of it comes from natural sources and some comes from artificial sources. Background Radiation Bad Gastein and Radon Therapy Natural Background Radiation Artificial Background Radiation Radon Gas Outside of naturally occurring sources of radiation, there are man-made processes that produce radioactive material. Percentages Geiger Muller Tube Three types of natural background sources of radiation are: Cosmic Radiation Terrestrial Radiation Internal radiation

Background Radiation

Transcript: Radon Radiation Background Radiation Background Radiation Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope What is it? Its a device for measuring radioactivity by detecting and counting ionizing particles. The Discovery of Radioactivity. In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays, which had been discovered in 1895 by Most background radiation comes from natural sources, while most artificial radiation comes from medical examinations, such as x-ray photographs. Radiation can damage cells and make them cancerous. Radiation also has many practical uses. It can be used in medicine to trace where certain chemicals collect in the body, and also in industry, to control measuring equipment. Discovery of Radioactivity Geiger counters

Background Radiation

Transcript: Were does it come from? How does it affect us? Background Radiation is found everywere. It's in the dirt, air, and even the food and water that you eat. It's found throughout space. The biggest source of natural background radiation is airborne radon. Heavy smoking results in a dose of 160 mSv/year. nuclear explosions between the 1940s and 1960s scattered a substantial amount of radioactive contamination. Most is caused by nuclear events. What is Background Radiation? The ionizing radiation found everywere that people on the planet Earth are exposed to, including natural and artificial sources. It is even found in the air you breathe. Where is it? Global avg. human exposure to artificial radiation is 0.6 mSv/a Can cause Cancer and other serious medical issues. More exposure means the greater the chance for cancer to occure Background Radiation By: Connor Rowell

Background Radiation

Transcript: Geiger Counters are devices which detect radioactivity (ionizing radiation). Digital ones go up in numbers and never go back down. Analogue devices click each time with the meter indicating the amount of radiation, unlike digital devices however they go down because it will specify if there's not much background radiation. Kyle Wisbey Background Radiation Back in the old days... specifically 1895 a man called Wilhelm Roentgen discovered Geiger Counters Discovery of Radioactivity

Background Radiation

Transcript: Detecting Radiation When photographic film comes in contact with radiation, it turns darker. The more radiation it absorbs, the darker it becomes. When a Geiger-Muller tube absorbs radiation, it sends an electric pulse to a counting machine, this creates a clicking sound. The higher the frequency of the clicking sound means the more radiation it is absorbing. Background Radiation Since the beginning of time, radiation has been bombarding us, all life, and everything else for that matter. What is Background Radiation? Photographic Film Geiger-Muller Tube Radiation on the Earth has many sources, including nuclear waste cosmic radiation inside the body rocks and soil medical uses of radiation radon gas as well as many other sources.

Background radiation

Transcript: Daily occurrence of background radiation where Radiation comes from Chernobyl in 1986 In 1986 a nuclear disaster occurred involving Chernobyl, Ukraine. Below is a picture after the coming months after Chernobyl, the picture only shows slight sources of radiation. Most forms of background radiation come from your own household appliances. Majority of fire alarms use Nuclear products in order to detect for any smoke. Quite a loot of radiation comes off of x-rays and othe medical appliances. Background radiation background radiation appears all around us. Before 1896, the only background radiation that occurred to anyone around them came from the rocks. Today background radiation comes from many man designed sources as well as natural sources. The radiation that appears from man made sources is from nuclear waste. People that would work daily with background radiation are ensured to take the correct precautions necessarily. Never to handle any type of nuclear substance with bare hands. When working with radiation on a daily basis you are then detected to ensure you are not carrying any harmful exposed radiation.

Background Radiation

Transcript: emits more radiation than Unless its a International Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) 285 stations operating, 321 monitoring stations and 16 radionuclide laboratories when completed Can detect much lower quantities of radioactivity in air, but not in real time using seismic, hydroacoustic and infrasound technology, collect and transmit monitoring data to the CTBTO for analysis. Background Radiation 6.2mSv 0.1mSv From Full body Scanner Monitoring Systems 70uSv Living in Concrete 1yr Canadian Radiological Monitoring Network (CRMN) 26 environmental monitoring stations provides information on natural background radiation levels routinely collect air, precipitation, external gamma dose, drinking water, atmospheric water vapor, and milk for radioactivity analysis Doses of Background Radiation Average Doses per year Radiation Myths 1.Natural Cosmic (Sun and outer space) Radon (decay of U and Th) Terrestrial (U, Th and other natural radionuclides from earth crust) Internal human body (K-40 and C-14) Sources 3.Smoking (Additional ~ 2.8mSv/yr ) 2.Artificial Medical (mostly X-ray) Consumer products ( smoke detector etc.) Others (building materials, Nuclear Power plant, etc.) Fix Point Surveillance (FPS) network 71 detectors monitors public doses from radioactive materials in the air measure external gamma dose rates of Argon-41, Xenon-133 and Xenon-135 gamma dose rate from all sources, measured as Air KERMA (Kinetic Energy Released in Matter) Radiation from radiofrequency is non-ionizing 250uSv Yearly Limit

Background Radiation

Transcript: Natural sources of Backgroud Radiation Background Radiation Bombs- have been exploded by man, releasing radiation into the argument. Radiation also causes mutations to a person's genetic code. The repair systems of the human body repair most of the cellular damage. The body replaces dead cells killed by radiation exposure through the same biological processes that it uses to replace other cells Artificial Sources of background radiation Radiation can damage or kill cells Uses of background radiation exposure to high levels of radiation causes a condition known as radiation sickness. cosmic rays - radiation that reaches the Earth from space rocks and soil - some rocks are radioactive and give off radioactive radon gas living things - plants absorb radioactive materials from the soil and these pass up the food chain Nucleur power- releases radiation Certain rocks are radioactive, like granite. This releases the radioactive gas called radon, which decays, causing BACKGROUND RADIATION Background Radiation Human activity has added to background radiation by creating and using artificial sources of radiation Dangers These include medical X-rays, radioactive fallout from nuclear weapons testing and radioactive waste from nuclear power stations.

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