Quantity:
The 'Hurricane Balls' consist of two ball bearings welded together - no easy task! If you spin the Hurricane Balls on a smooth surface, you can use the plastic pipe to blow at one side of the Hurricane Balls. Not only does this keeps them spinning, you can accelerate them up to incredible speeds. Speeds of 12,000 rpm have been recorded for the Hurricane Balls using a laboratory strobe light.In the home, it is possible to use a tv as a simple stroboscope. Dr Adam Chalcraft writes "I can easily get a speed of 3600 RPM, and more to the point I can easily measure this, by putting the top in front of my (NTSC) TV in a dark room. As it runs down, I can clearly see 60Hz, 30Hz, 20Hz and so on. Of course if you try it in front of a PAL TV (in the UK) you will see 50Hz, 25Hz and so on." Thanks for that, Adam.Any smooth surface will work for spinning on, but the very best is a concave mirror, e.g. those round, magnifying bathroom mirrors. We do not supply the mirror, as these are fragile to post, and are readily available everywhere.Once the Hurricane Balls are spinning, you can then use the coloured Microlights to illuminate them, with different colours at different angles. In a darkened room, the effect is magical!We have also included a couple of Tetratops - clusters of welded plastic balls. Again these can be spun by hand on a smooth flat surface, and then using the plastic blow pipe, their spinning speed can be increased.Included in the pack is 1 set of Hurricane balls, 2 Tetratops of different designs, 3 Micro Flashlights, and a plastic tube to power them with!Watch the video...Write a review about: Hurricane BallsAsk a question about: Hurricane BallsPeople who bought this item also bought:
