Since 1991 the Mégaron Athens Concert Hall—a majestic marble building with exceptional acoustics—has offered a year-round venue for opera, ballet, and classical music performances.
Acoustic ceilings help to reduce noise and reverberation, sparing the nerves and voices of teachers and students, but many schools cannot afford to install them.
Like a bat that emits an acoustic signal and reads the echo, these fish emit electric waves or pulses, depending on the species, and then, with special receptors, detect any disturbances made to these fields.
Scientists at the Erlangen University discovered that the plant’s nectar functions as an “acoustic cat’s eye,” by reflecting the ultrasound signals directly back to the bats.
Within the confines of about one cubic inch [16 cu cm], our ears utilize principles of acoustics, mechanics, hydraulics, electronics, and higher mathematics to accomplish what they do.
Reflection seismology is based on the principle that sound reflects from layers of rock within the earth, thus giving scientists an acoustic picture of what lies below.
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