Let's see what kind of things can be considered from the result of Experiment 2.
Yes!
Yes!
(1) In Experiment 1, it was left at 37 degrees for Experiment 1, 27 degrees for Experiment 2 and 5 degrees for 2 days, respectively, but it turned out that bacteria are more likely to be increased when the temperature is close to body temperature.
(2) Ultraviolet rays are said to have a bactericidal effect, but we could not confirm the change, even if we compare what we put on ultraviolet rays and what we put in a dark place. This is because things placed on ultraviolet rays are slightly warmer due to the heat of the machine that emits ultraviolet rays, and it is thought that the difference in temperature changes with or without ultraviolet rays.
(3) After all, before the washing of hands and after soap washing, the change was not seen greatly. It is thought that the organic matter of the soap increased like bacteria, and the number of bacteria originally contained in the petri dish increased.
Well then, what is important to increase bacteria, in particular, is temperature.
Yeah.
