You can use your United States postage stamps â whether itâs an old or new issue â for as long as it is mint or it is not a used stamp or a cancelled stamp. 5) What is the face value of US forever stamps? The USPS forever stamps do not have face values. These non-denominated stamps are valid for first class mails. They are called forever stamps because their value remains perpetually the same even if the postal service rates go up.
Definition of protection for English Language Learners. : 1  the state of being kept from harm, loss, etc. : the state of being protected. : 2  something that keeps a person or thing from being harmed, lost, etc. : something that protects someone or something.
Radiation protection, sometimes known as radiological protection, is defined by the International Atomic Energy Agency as The protection of people from harmful effects of exposure to ionizing radiation, and the means for achieving this. The IAEA also states The accepted understanding of the term radiation protection is restricted to protection of people. Suggestions to extend the definition to include the protection of non-human species or the protection of the environment are controversial.