Wednesday, September 13, 2017

5 second rule experiment

The Eureka! Lab at Science for Students did an experiment on the 5 second rule - is food still cleaner if only dropped for 5 seconds rather than longer?

Part 1 sets out the experiment:

Part 2 describes the experimental setup:

and Part 3 calculated the results:

Results?  basically busted - food dropped for 5 seconds collects microbes just like food dropped for 50 seconds. But basically most microbes you pick up are not that harmful anyway.

Clean floors are always better though!!

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