Scientists have used the LOFAR radio telescope to study the development of lightning flashes in unprecedented detail. Their work reveals that the negative charges inside a thundercloud are not discharged all in a single flash, but are in part stored alongside the leader channel at Interruptions, inside structures which the researchers have called needles. This may cause a repeated discharge to the ground.
Why lightning often strikes twice
Scientists have used the LOFAR radio telescope to study the development of lightning flashes in unprecedented detail. Their work reveals that the negative charges inside a thundercloud are not dischar..
