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Radioactivity is the act of emitting radiation spontaneously.  You can detect radioactivity by using an instument called a personal radiation detector (PRD). They provide a digital display of the exposure rate and a visual, auditory, or vibratory alarm at preset thresholds.

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Radioactivity is the natural break down of atoms. You can detect radioactivity using something called a Geiger Counter. As elements decay, their fragments fly into the Geiger Counter tube where each fragment causes a small electric current which causes the Geiger counter to register it. Radioactivity can be used to generate heat which can be used in nuclear power pants to make steam and generate electricity, also space probes like Voyager and Pioneer use radioactive material for their power.

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Stay on top of United States latest developments on the ground with Al Jazeera’s fact-based news, exclusive video footage, photos and updated maps.

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Radio activity is the process where an unstable atomic nucleus looses energy by radiation. the radiation happenes by a really cool insturment called a geiger counter. To use a gieger counter you need something radioactive. What the geiger counter will do is it will make a ticking noise and boom the process starts over and over again.

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radioactivity is the act of emitting radiation spontaneously. Radioactivity is the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.Humans can't detect radiation. A  type of radiation detector is a Geiger Mueller.When a Geiger counter is exposed to ionizing radiation, the particles penetrate the tube and collide with the gas, releasing more electrons.

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Radioactivity is the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei. In simpler words, radioactivity is an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order to shift to a more stable configuration. Radioactivity is used in many things today such as medicine, academics and industry.

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the definition of Radioactivity is the process by witch an unstable atomic nucleus loses energy. it is detected by a radiation detector the most common type is the Geiger Mueller

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definition-
Radioactive is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive.

how to detect-
It cannot be detected by human. The most common type of radiation detector is a Geiger-Mueller (GM) tube, also called a Geiger counter

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The definition for radioactivity the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
1.Personal Radiation Detector (PRD)2.Handheld Survey Meter.3.Radiation Isotope Identification Device (RIID)4Radiation Portal Monitor (RPM)
Because humans can not detect it they use these instruments to to find them.

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The definition of Radioactivity is the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei. Humans can't detect it using just our senses but have discovered ways of detecting it. The most common way is a Geiger Counter.

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Definition- Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nucleus is considered radioactive.
How is it detected -  They have to use a radiation detector most common type of radiation detector is a Geiger-Mueller

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Radioactive is the process in which a breakdown of atomic nucleus happens which results in the nucleus releasing energy and matter,this happens when nucleus dose not have enough binding energy to hold it together.We detect Radioactivity by a radiation detector called the Geiger-muller which is basically a tube filled with inert gas,which is going to conduct electricity when radition enters. Radioactivity can be useful in many ways for example radioctivity can be used to study living orgnisms,to diagnose and treat diseases and to produce  energy for heat and electric power.

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What is radioactivity: the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei. now how do you detect radioactivity,so radiation cannot be sensed by humans like we have no clue that its around us  so you can get a radiation detector
and how this can be used well you can put it into your house our in areas where they are dealing with radio activity they can put more high tech senors there
and here is a short video on how it works

https://www.youtube.com/watch?v=dY10s71rv80

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Radioactivity is "the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei." Scientists have come up with multiple tools/devices to use to measure radioactivity. Radioactive sources are used to study living organisms so we can help treat sickness or disease.

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Radioactivity decay is the process where an unstable atomic nucleus loses its energy by radiation. A material containing unstable Nuclei is is considered radioactive.

You can detect it using a tool called a Geiger-Mueller.(GM) tube, it is also called a Geiger counter. This tool uses a gas which produces electricity when radiation enters the tube. https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.shutterstock.com%2Fsearch%2Fradioactive%2Bdecay&psig=AOvVaw2Nw_iVxqHesUFn89jJWqY7&ust=1610560660131000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCKDX65T8lu4CFQAAAAAdAAAAABAD

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Radioactive decay is the process of a nucleus decaying by losing its energy via radiation over a very long amount of time. It cannot be detected by humans themselves but by radiation detectors.

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Radioactivity is the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei. Radioactivity can not be detected by humans but several instruments can be used to. The most common one is a GM Tube or Geiger counter. Radioactivity can be used for several things such as studying living organisms, diagnosing and treating diseases, and producing heat.

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Definition- Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nucleus is considered radioactive.
How to detect it-  Radiation cannot be detected by human senses, The most common type of radiation detector is a Geiger-Mueller (GM) tube, also called a Geiger counter.

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Google slide

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Radioactivity is the process by which unstable particles Decay into their stable isotopes. In the Process omitting one of three different types of radiation Alpha Beta or gamma. Once half of the nuclei have decayed from the particle it will become its stable isotope this is called its half-life. The way we can measure how old things are using this method is how much of a certain how much Particle in a substance has decayed away as time passes more and more of this Radioactive mass will Decay to its half-life 4 dating things closer to us we can use carbon-14. Carbon-14 half life is about 5,700 years. Free dating older things we use other Radioactive isotopes. For example uranium has a half-life of 4.47 billion years letting us stay things back to the beginning of our planet. This process of  radioactive dating his help scientists discover many interesting timeline aspects of our planets evolution. 

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Radioactive decay is the process by which an unstable atomic nucleus loses energy over a long period of time
radiation can be used for generating electricity. carbon dating

1. Handheld Survey Meter.

2. Isotope Identification Device (RIID)