Anybody can develop high frequency hearing loss, but it becomes more common with age. Exposure to loud sounds or high frequency sounds are common causes of ear damage in younger people.

Discover the artworks on display, a timeline of key events and a glossary of key terms relating to the period. Many of the 30 artists exhibiting in The Imaginary Institution of India spent their youth ...

Each cavity is driven by a high-power klystron, which is a tube containing electron beams. The electron beams are intensity-modulated to a frequency of 400 MHz, or 400 million oscillations per second.