There’s been all sorts of scholarly theories about the purpose of Stonehenge over the years, but it turns out that the one characteristic rarely looked at is its acoustics. A research team from the University of Salford in England reproduced the historic site in 1/12th size and placed it inside an anechoic chamber to discover that its acoustic properties were profound and unexpected.
Similar experiments had actually been done before but never reproduced the same results because of the shape of the stones, which as it turns out, is critical. In this study, the exact shapes were reproduced via 3D printing and laser measurement. Not only that, all 157 of the original stones were included, instead of the 100 that are currently left standing.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
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