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Forum Index : Off topic archive. : magnet magic
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| Dinges Senior Member  Joined: 04/01/2008 Location: AlbaniaPosts: 510 |
After having been playing with powerful NdFeB magnets for the last 4 years one gets a bit used to their power. They lose most of their magical appeal they once possessed when you first came across and played with them. It isn't till you see someone else, who hasn't experienced these magnets before, play with them that you again notice the amazement and unbelief of their strength in people's eyes. As you watch the little incidents as they learn how to handle them properly. When I was visiting the local motor rewind shop about a month ago I took one N40 2"x1"x.5" magnet with me to show them. In the end I had to leave it there, I couldn't get it over my heart to ask it back... Was hilarious to see 4 grown-up men playing with a magnet as if they were little children. For some reason these people were totally unaware of the existence of such powerful magnets, despite the fact that their business consists of electric motors, copper wire and electromagnets. Then, every once in a while, you get that sudden magical feeling back yourself too... The magic? Letting an object float in the air, using nothing but 4 NdFeB magnets: 
Sheer wonder and amazement. In the past I had already seen the elaborate contraptions using Bismuth and a large stack of neo magnets to let a small neo magnet float in the air, but this one beats them all by sheer simplicity and ease of construction: just 4 N45 5x5x5mm NdFeB magnets and a thin piece of graphite, cut from an old carbon brush. They say to use pyrolytic graphite, but a bit from a carbon brush often works too. Some brushes work better than others. There are plenty of descriptions of this and similar experiment around on the web. Here's the link where I found it first: http://www.supermagnete.de/eng/project70?switch_lang=1 I intend to build a larger and nicer version of the one I already made, to put on my desk. It's things like this that make me feel like a little kid again, once in a while... The sheer wonder and amazement of it all... Truly exciting times we live in, with so much powerful technology at our fingertips. Peter. |
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Tinker Guru  Joined: 07/11/2007 Location: AustraliaPosts: 1904 |
Thanks for that Peter. Now I just have to try those tricks myself 
Klaus Klaus |
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| domwild Guru Joined: 16/12/2005 Location: AustraliaPosts: 873 |
Dinges, This is not real and this is one of your magic tricks you used to perform during your period as a magician (as per your old photo). Or this can be explained as something that only happens in the vicinity of Belgian nuclear reactors as it even glows with a fluorescent light? Taxation as a means of achieving prosperity is like a man standing inside a bucket trying to lift himself up. Winston Churchill |
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MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
domwild: I'm new here. What's this mean?: 01 01 was a race horse 10 10 was 01 10 10 10 01 01 race 01 01 01 01 10. Is it something like: mr ducks mr not osar cmwings oic mr ducks? Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
Macgyver, I can only make sense of it if it were a binary semi-nibble: ie 1111 binary nibble = 15 decimal = f Hexadecimal kind of thing. The last two places (half a nibble or quarter byte... or the last 2 bits) are toggling 2 (0010) and 1 (0001) (first two places toggle 4 (0100) and 8 (1000).....etc) so using semi nibbles only: one one was a race horse (01 01 was a race horse) two two was one too (10 10 was 01 10) two two won one race (10 10 01 01 race) one one won one too (01 01 01 01 10 ) .... that or I missed it completely 
.......oztules Edit: Curses, this had to change from "one one won one two (01 01 01 01 10 )"... to "one one won one too (01 01 01 01 10 )" Village idiot...or... just another hack out of his depth |
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Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
is that why it take 11 to ready binary??????? |
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| MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
Oh! Okay . . . Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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