|
Post by olsmelly on Nov 14, 2009 6:58:20 GMT
I decided to see what would happen if I jigged a magnet up and down in our goldfish's bowl. He went mad! I had to feed him three times; he'd got so hungry! Maw was not amused. She thought I was teasing him, but it was a scientific experiment. I needed to know if a moving magnet in water might really stimulate the feeding impulse. It does......... well, certainly our goldfish's appetite! Once again my dodgy brain started its shenanigans at about 5.30 this morning, so I was awakened by the thought: why not attach a small magnet to the spinner of a MEPS type of lure? I have caught many hundreds of fish (especially sea trout) on MEPS. The spinner zaps around at quite an impressive rate; at least a couple of hundred rpm. Now that should produce quite an impressive electric field in the water; especially with a very strong magnet. The problem is size! Well fear not! Here is a link to a small and very powerful solution. All it requires is a touch of adhesive, to make the addition permanent. Don't forget! Attach it to the trailing edge of the spinner, to maximise the electric field.......... I'd also give it a coat of dope, to minimise corrosion. www.first4magnets.com/f4305100--circular-disc-magnet-1mm-dia-x-1mm-thick-n42-neodymium-magnets-pk-100-5-p.aspThis little jigger has an impressive 5,900 Gauss field strength and it ain't expensive.
|
|
|
Post by castfromthepast on Nov 14, 2009 7:47:11 GMT
In the USA there are loads of magnetic lures on the market,at very cheap prices.Have a look on line.Then you may get a full night's sleep.
|
|
|
Post by finhunter on Nov 14, 2009 12:59:35 GMT
thats a very interesting experiment. has made me think alot about the posablilities. might have to some experiments my self. maybe try hiding one or two in bait.
did the goldfish become more excited only once you had started to move the magnet, did it notice the magnet when it was static?
|
|
|
Post by davey on Nov 14, 2009 13:31:52 GMT
You probably scared it half to death with a big hairy hand jiggling about in his bowl, probably thought his number was up and decided to have one last good feed before he met his maker.
Only joking mate, interesting read though.
|
|
|
Post by lighty on Nov 14, 2009 16:57:44 GMT
A warning lads, these neodymium magnets are very strong, so if you use them..be careful!
lighty
|
|
|
Post by pjl83 on Nov 14, 2009 17:22:23 GMT
A warning lads, these neodymium magnets are very strong, so if you use them..be careful! lighty He's right. be careful. I got caught out experimenting with some strong magnets about the same diameter as a 5 pence piece (and a bit deeper). Withouth thinking I went to put 2 in the same hand and when they jumped to each other they trapped a piece of my skin! Until you've handled them, you just can imagine how strong they are. :nerd: :ahhh: BE CAREFUL! :blah:
|
|
|
Post by olsmelly on Nov 15, 2009 8:34:58 GMT
You are right to warn people of the power of these magnets! However, the ones I am talking about are too small to do damage, despite the immense Gaussian potential. I am about to start my own experiment in wind generation, using a form of Gorlov Turbine (similar to a lawnmower blade). I shall be using 15,900 Gauss magnets for that.......... Now they are dangerous!The full protocol, used to test the goldfish's reaction was: - Feed goldfish, so it is not hungry
- Tape a non-magnetic metal booby bead to a length of monofil
- Jig it in the bowl and note reaction (nil)
- Replace the bead with a 4,500 Gauss magnetic bead of similar dimensions
- Jig it in the bowl and note reaction (fish displays attack behaviour around the bead)
- Feed the goldfish again!...... and again.....
I'd suggest that the magnets be stuck to the trailing edge of the spinner, on the outside. The inside of the spinner is the aqua foil side. It might also be prudent to use sufficient resin, to streamline the profile of the magnet. A cavity at the trailing side of the magnet may also enhance performance, in that it will form a "boomer", which I know is very attractive to Sea Trout. At a cost of about 5p per unit, I'd say such an experiment is eminently affordable. I use the company in the link and they deliver within a couple of working days. Note: the prices might exclude VAT and postage, which might shove the unit cost up to around 6.5p.
|
|
|
Post by lighty on Nov 15, 2009 16:40:48 GMT
Why on earth do you want to generate wind, christ, its bad enough out there now!..lol
lighty
|
|
|
Post by olsmelly on Nov 15, 2009 20:03:06 GMT
See Youz sonny!
;D
|
|