Radioactivity is a natural phenomenon intressant. It is also dangerous and has some knowledge of this subject is a necessity
These are helium nuclei at a rate corresponding to about 5% of the speed of light. a-ionizing radiation has great power, but a small doordingend power. Thanks to this little penetrating power will through the air but a few centimeters go far. Radioactive particles having a radiation are therefore not hazardous as long as they are kept at a distance. If a radioactive particle with a radiation in the body does, however, this can be fatal.
These are fast electrons with a speed of 30% to 99% of the speed of light. These particles have a small ionizing power, but a great penetrating power. This can make it several meters go far. At b-radiation invalidate a neutron into a proton.
In contrast to the a-b-radiation and the radiation-g-radiation consists not only of photons of particles. They have a very small ionizing power and a tremendous penetrating power. Thanks to they can come very far this tremendous penetrating power.
Like the radiation-g, these are photons, containing only the X-ray photons with less energy. A special feature of this radiation is that it has a fluoride detection capability, so that substances will emit visible light.
This is a combination of radiation from the surroundings.
When expressing a unit is the amount of radioactivity becquerels use. The abbreviation of Becquerel is Bq. If there expires every second one atom is the radioactive substance having a value of 1 Bq.
Radioactivity is dangerous due to the ionizing power. Radioactive radiation can ionize substances. It changed the substance of composition, which can have negative effects.
Radioactivity: physical phenomenon