The glass fibres are woven through the fabric at regular intervals (left). A transmitter (T) passes acoustic waves through the glass fibres, while the receiver (R) measures the waves at the other end.
WEBVTT AT 3:30 ON THE XFINITY SERIES IOWA 250. THE WEBSITE IS LIVE AND I FANS HAVE ALREADY STARTED TO SNAP UP T-SHIRTS FOR 2018. THE GOLD VERSION OF THE SHIRT, WHICH CELEBRATES THE WAVE THAT FANS SENT ...