It is a yellow circle with three flat topped triangles arrayed equally, and a black dot in the center. See the link for an image below.
The radiation symbol, often depicted as a trefoil, warns of potential ionizing radiation hazards in the area. It indicates that there is a source of radiation that could be harmful to health if proper precautions are not taken.
On dangerous chemicals, chemical containers, which warns you to NOT to make contact with it.
The "radioactive" safety symbol warns you that radioactive material or a radiation producing machine is near the symbol and you should take precautions to ensure that you are not unnecessarily exposed to ionizing radiation.
When sick people are treated with radiation, that does not make them radioactive. Radiation is dangerous, but radiation patients are not.
Any electromagnetic radiation can be dangerous. Alpha waves are higher on the radiation scale than x-rays so yes, they are dangerous.
The symbol for radiation is the "radiation trefoil", and you can find it by that name. I've added a link below.
The electrical safety symbol is a stylized lightning flash. It warns about the possibility of electric shock, burns, or arc flash.
EXTREMLY
It is potentially dangerous. The radiation level found in granite is enough to suppress the immune system, cause birth defects, and cause cancer. There are granite composite options which are not containing the level of radiation that is dangerous.
Radiation is the emission of energy in the form of waves or particles. It can be dangerous because it can damage cells and DNA in the body, leading to health problems such as cancer and radiation sickness.
executive
Yes they very are