The maximum dimensions for your carry-on bag are: Length - 24 (61cm) including wheels and handles ; Width - 17 (43cm) Height - 10 (25cm) For additional carry-on items beyond the one-bag limit, each piece will incur a fee. Refer to the checked baggage page for more information.
Tritium (3H) is the most stable radioisotope of hydrogen. That is, of all radioactive isotopes of hydrogen, tritium is the least radioactive. It has a proton and 2 neutrons in its nucleus. Tritium decays through beta minus decay and changes to helium-3. It has a half-life of 12.32 years.
The half-life of a radioactive element is the time that it takes for one half of the atoms of that substance to disintegrate into another nuclear form.These can range from mere fractions of a second, to many billions of years.he half-life of a radioactive element is the time that it takes for one half of the atoms of that substance to disintegrate into another nuclear form.