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Sound Pressure Maths

March 11, 2020 Author 0

Sound Pressure When people talk of sound level, they usually refer to it in decibels.  This may be when thinking about OSHA requirements, how loud […]

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THE LEVELS OF KARATE BELTS

March 4, 2020 Author 0

What do colored karate ranks mean? We took a look at the history and symbolism of karate belts in the blog post “The Meaning Of Karate Belts.” […]