What is the Radioactive Isotope?Figure (a) shows two fresh onions. After being left aside for 2 weeks, P remains the same but Q has sprouted, as shown in Figure (b). Onion P had been irradiated with gamma radiation. The gamma rays passing through the onion had caused some changes in the onion that delayed the sprouting process. This useful procedure delays sprouting … [Read more...] about What is the Radioactive Isotope?