Radioactive carbon dating demonstration
The gamma rays penetrate packaging, so the food or instrument can be sealed and then sterilised so that re-contamination cannot occur.
No radioactive source particles are allowed to get in touch with the irradiated substance.
Sterilisation of Food and Surgical Instruments Gamma rays kill bacteria.
This plot shows the concentration of the reactant in a first-order reaction as a function of time and identifies a series of half-lives, intervals in which the reactant concentration decreases by a factor of 2.\n Following the somewhat serendipitous discovery of radioactivity by Becquerel, many prominent scientists began to investigate this new, intriguing phenomenon.Among them were Marie Curie (the first woman to win a Nobel Prize, and the only person to win two Nobel Prizes in different sciences—chemistry and physics), who was the first to coin the term “radioactivity,” and Ernest Rutherford (of gold foil experiment fame), who investigated and named three of the most common types of radiation.We classify different types of radioactive decay by the radiation produced.\n Alpha particles, which are attracted to the negative plate and deflected by a relatively small amount, must be positively charged and relatively massive.Beta particles, which are attracted to the positive plate and deflected a relatively large amount, must be negatively charged and relatively light.
If two reactions have the same order, the faster reaction will have a shorter half-life, and the slower reaction will have a longer half-life.