The Sun makes a sound but we can’t hear it. In the form of pressure waves, the Sun does make a sound. The wavelength of the pressure waves from the Sun is measured in hundreds of miles, however, meaning they are far beyond the range of human hearing.
100 Mind-Blowing Hearing Facts
Deaf people are known to use sign language in their sleep. A case study of a 71-year-old man with rapid eye movement disorder and a severe hearing impairment showed him using fluent sign language in his sleep, with researchers able to get an idea of what he was dreaming about thanks to those signs.
The world’s quietest room is located at Microsoft’s headquarters in Washington state. In Building 87 of Microsoft’s headquarters in Redmond, Washington lies the quietest room in the world. With a record-breaking background noise of -20.35 dBA, this room is 20 decibels below the minimum of human hearing. It is so silent that if you stay in it for long enough, you’ll start to hear your heartbeat, a deafening ringing in your ears, and the grinding of your bones. To achieve absolute silence, the room was constructed with an onion-like structure made of six layers of concrete and steel.
2 out of 1000 children are born deaf in the United States. More children will lose their hearing later on as they grow up. This can occur later on during childhood or as adults. Deafness is also the number one birth defect recorded in the United States.
Wearing headphones for just an hour will increase the bacteria in your ear by 700 times You cover your ears from the natural air when you wear headphones which increases the production of bacteria by 700% in 1 hour. Your eardrum cannot bear an influx of bacteria in that much quantity so it starts to react by painting or hearing loss in the long term.
A dog’s hearing is 10 times better than a human’s.
Deaf people use sign language in their sleep. During a 2017 case study, a 71-year-old man with severe hearing impairment and “rapid eye movement disorder” was observed using fluent sign language in his sleep.
The smallest bone in the human body is the stapes bone in the ear. Damage to this bone may cause partial or complete hearing loss.
The Sun is not silent. That Sun above us does make sound through pressure waves. But the weird science fact here is that the wavelength of the sun’s pressure waves is impossible to capture with human hearing.
Sloths see better at night than in the day and they have very poor hearing. They rely on their sense of smell to locate food and other sloths.