name this effect

[zenen1]

this is a video of the celebration of lights in vancouver team canada presentation,i was wondering what the effect in the middle of the screen at 16:59 The effect that rises super slowly

here is the link:http://www.youtube.com/watch?v=aF1b3ZgTaLA

[erid]

I'm pretty sure they are girandolas. Roughly, they are circular frames with drivers around the outside at an angle, spinning and propelling it up.

[fredhappy]

Those are girandolas.