Spider webs are essential for capturing food – but they might also be used as giant hearing aids for the arachnids that spin them, according to new research.
for the arachnids that spin them, according to new research.
"We find that the wispy, wheel-shaped orb web acts as a hyperacute acoustic antenna to capture the sound-induced air particle movements," write the researchers in theirA laser vibrometer was used to measure the response of spider web silk to music in an, a room designed to minimize sound wave reflections. The measurements showed that the webs moved in almost perfect unison with the sound, potentially capturing the audio as it hits.
Further experiments with miniature speakers placed close to the edge of the web showed sounds traveling further through the webs than through the air, and some of the spiders responded to the vibrations even when the sound hadn't reached the spiders through the air.We know that spiders are able to, for example, via web vibrations passed through the sensory organs on the tarsal claws at the tip of spider legs.
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