To improve activity of water, oil, gasoline, human being and animal and the vitality of life by irradiating the liq. or water with the radiation consisting of α ray, β ray or γ ray or all of them to increase the quantum number of the hydrogen atom of water and enhancing the chemical activity of the hydrogen atom.

A liq. such as water, oil and gasoline and the body fluid (water) of human being, animal, etc., are irradiated with the radiation consisting of αray, β ray or γ ray or all of them to increase the quantum number of the hydrogen atom of water, and the chemical activity of the hydrogen atom is enhanced. Meanwhile, the activation of oxygen is prevented. The water thus activated is used to improve the freshness of food, to activate plants and to improve the curable effect due to the activation of the cell of the human being and animal. As for gasoline, the harmful matter is eliminated to increase the power of an engine. Further, with respect to water, bacteria and mite are extirpated, water is made difficult to oxidize, the reducing power is enhanced, and the cut face is cleaned in discharge machining, etc.