The strange bell has been around for 175 years, scientists have not been able to explain it

With up to 175 years of operation, this bizarre device is still making a headache for scientists to find the most accurate explanation.

At the famous Oxford University in the UK, a bell was constantly ringing (though soundproofed inside a glass) during 175 passes. Specifically, the device, called "Oxford Electric Bell" , is made up of two copper bells next to each other, each under a dry electric battery.

In addition, a metal ball, rather than a pendulum designed in the middle, will hit the bell whenever it is affected by static electricity, then bounce and hit the other side, continuing as so. The oscillation frequency of this process is about 2Hz.

Close up of the "miracle" bell.

But the real mystery lies in the battery: No one knows how it is made or what material it is made of. They are coated with an external sulfur layer to prevent negative impacts from air humidity. That is all we learn, and in terms of operating and operating mechanism, there is still no proper answer.

The most likely answer to date is related to the Zamboni battery , made from dilute zinc and silver plates with paper, eventually compressed together to produce the final result.

Oxford Electric Bell.