(Hot Design) Firefighter knowledge poster

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Everyone feels the weight of an object when holding it. Electromagnetic interaction seems less familiar, but it is the reason that makes all matter rigid. FIREFIGHTER KNOWLEDGE POSTER. Without the electromagnetic force, our floor would be an infinite space and everyone would be pulled down to the ground by gravity. Weak interactions are strange to radiation. And strong interaction is actually not perceived by humans, it only occurs in the atomic nucleus and in a very small range.

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