Hi @vixmemon.
Actually they have inside a very flexible rod which allows mobility and sensitivity when in contact with the wind flow, generating the so-called vortices, ie type of circular flow.
Thanks for your great contribution. Regards.
Hi @vixmemon.
Actually they have inside a very flexible rod which allows mobility and sensitivity when in contact with the wind flow, generating the so-called vortices, ie type of circular flow.
Thanks for your great contribution. Regards.