What makes sounds have more volume (higher desibel)?
In: Physics
Sound is a wave of pressure in the air. That is, a series of high pressure and low pressure areas moving through the air. A louder sound will have a higher difference between the low pressure areas and the high pressure ones.
The lowest possible pressure a sound wave could hypothetically create is a vacuum and the highest is two atmospheres of pressure. This works out to approximately 194 dB.
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