where are they from?
Place the earplugs in the ear canal to block excessive noise or to prevent water, dirt or foreign matter from entering the ear. But where do they originate?
Fast earplug history
Earplugs have actually been used by our ancestors. In fact, when Thomas ordered his staff to make shaped earplugs with melted beeswax to protect them from the sound of the sirens as they cruised past, they were actually in Homer's Odyssey. I got to the earplugs. This early reference suggested the use of earplugs in the past; in addition, different materials such as wood, clay, cotton, ivory or even silver were used as earplugs. Imagine using clumsy resources just to reduce noise! Made a good thing, hey, first invented the silicone earplugs.
Produced by Ray and Cecilia Benner in 1962, the first silicone variant has been substantially improved from clay and wood earplugs, and it even prevents the usual ear infections, called swimmers' ears. In 1972, the foam was the following deformed material for earplugs, invented by Rodriguez. The foam greatly reduces the noise. Ironically, the foam filler's power comes from the foam filling, which is still present today and has the ability to damage hearing. The foam is made of polyvinyl chloride or polyurethane or various other acrylic polymer products.
Foam earplugs are the most widely used. They are very easy to roll, compress and mold to fit inside the ear canal. When the reduced pressure foam seals the ear canal, it can greatly reduce the noise in the environment provided. This makes the foam version ideal for use in rest, study, inspection, and use in noisy tools or even landscaping work environments.
Therefore, the next time your ear needs to rest in the pressure and noise of your home, consider the past behind the hearing protection and appreciate the silence while traveling.
Not sure which earplugs to get? There is some help. Check the NRR rating on the package. NRR is an acronym for Noise Reduction and is the US Environmental Protection Agency's obligation to provide hearing protection regulations in the United States. Typically, the noise reduction level defines the dB or level of the sound of the earbuds off. The maximum NRR rating is 33 and the most affordable NRR rating is at least 20.
Orignal From: What is earplugs?
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