Determined
Determined
Gas
technetium gives off gamma radiation.
Radioactive
A grill that cooks meat gives off electromagnetic radiation, both visible and infra-red. Some of the cooking is also done by convection.
Luminosity is defined as the rate at which a star gives off energy. Luminosity can be measured in joules per second or watts.
A UV tube gives off some blue light as well as UV radiation :)
Determined
Determined
The sun gives off radiation. An x-ray machine gives off radiation.
Well the iPod touch gives off the least radiation ,while the iPad gives off the most radiation. For kids I recommend the iPod or use a computer at home . The iPod and the computer radiation is so low it is harmless.on the other hand the iPad gives of harmful radiation.
technetium gives off gamma radiation.
It's a semantic thing - by definition, if something gives out radiation, then it is radioactive. If an element gives off radiation, then it is a 'radioactive' element. If it does not give out radiation, then it is not 'radioactive'.
Electromagnetic radiation
Radioactive
Radium is an example
Radioactive
Radioactive
Dark Matter