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#acoustics

3 posts3 participants0 posts today
Public
The Kid Should See This 🌈🪐✨

Have you heard the incredible sound of skating on thin black ice? 🧊⚡️

When Nordic skaters glide across pristine frozen lakes, their blades create vibrations that travel through the ice sheet, generating otherworldly sounds similar to laser beams or alien spacecraft.

This fascinating acoustic phenomenon demonstrates sound wave #physics in a naturally occurring setting - no special effects needed!

👉 Learn more:` thekidshouldseethis.com/post/t

A Nordic skater glides alone on pristine black ice across a frozen lake, surrounded by pine forests on both shores.
#Acoustics#Nature#Math
Public
Chi ha ucciso Il Conte?

After extensive testing, here’s a 3D model of a Velcro-equipped speaker casing. Designed for a design session where users can explore different placements on a wearable element. As always, modeled with FreeCAD. #3DModeling #WearableTech #SpeakerDesign #FreeCAD #ProductDesign #Prototyping #TechInnovation #IndustrialDesign #OpenSource #HardwareDesign #Engineering #DesignThinking #CAD #Makers #DIY #Acoustics #ElectronicsEnclosure #FLOSS #design #uidesign #tui #wearable

Public
Flipboard Science Desk

Researchers created sound that can bend itself through space, reaching only your ear in a crowd.

From @ConversationUS: "Newly published research introduces a way to create audible enclaves – localized pockets of sound that are isolated from their surroundings."

flip.it/pyCqhH

The ConversationResearchers created sound that can bend itself through space, reaching only your ear in a crowd
More from The Conversation U.S.
#Sound#Science#Acoustics
Public
Nicole Sharp

Seeing Sound

Sound, vibration, and motion are all inextricably linked. In this BBC video, physicist Helen Czerski shows how an object’s sound and vibrations relate through the classic Chladni experiment. She vibrates a metal plate scattered with sand. At most vibration frequencies, the particles of sand bounce all over the place with no distinctive pattern. But at an object’s natural frequencies, there are standing waves and the sand gathers in spots where the standing wave has no vertical motion. The higher the vibration frequency, the more complex the pattern the sand makes. All of this plays into the sounds we hear, too. When struck, an object vibrates at many of its natural frequencies at once. That’s what gives us a rich, musical tone — all those layered frequencies. (Video and image credit: BBC)

#acoustics#ChladniPatterns#fluidDynamics
Public
Nicole Sharp

Tracking Tonga’s Boom

When the Hunga Tonga-Hunga Ha’apai volcano erupted in January 2022, its effects were felt — and heard — thousands of kilometers away. A new study analyzes crowdsourced data (largely from Aotearoa New Zealand) to estimate the audible impact of the eruption. The researchers found that the volume, arrival time, and nature of the rolling rumble reported by survey takers correlated well with seismic measurements. But humans provided data that monitoring equipment couldn’t. For example, reports of shaking buildings and rattling windows let researchers estimate the shock wave‘s overpressure far from the volcano. The team suggests that acting quickly to collect human impressions of rare events like this one can add valuable data that’s otherwise overlooked. (Image credit: NASA; research credit: M. Clive et al.; via Gizmodo)

A satellite image of the Tonga eruption from January 2022.
#acoustics#eruption#fluidDynamics
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