 Back to homepage | | |
|
|
|
) 
Guy's Magnets
Print
Report item
POLE SENSOR FOIL Full Size 12" x 12" sheet Did you remember those experiments in school with iron filings and magnets? This is an easier way to see a static magnetic field and a lot less messy! This is a micro-encapsulated foil of 12" x 12" (304.8 x 304.8mm). When it's held directly onto the surface of a magnetic material it will instantly reveal the magnetic field of any shape or pattern. It's used in quality control (weak spots or cracks in magnets show up as spots or lines), product demonstration, education, reverse engineering and product authentication but it's also a lot of fun. Magician's use it too but we've been sworn to secrecy on its' exact use! This sheet is easily cut with a sharp craft knife, sharp scissors or a guillotine. In the picture below we've placed it over a craft magnet. Craft magnets are 'multi-polar' which means they have stripes of alternating north and south polarisation. The film clearly shows this. Each dark stripe represents a strip of the craft magnet polarised in a single direction. The bright stripes in between the dark ones show where the poles meet and the magnetism from each stripe is cancelled out. When it's used on a stack of magnets it shows the interplay between the poles of each magnet in the stack which can be very beautiful.
 Once the foil is removed from the magnet the image remains for some time before it disipates. However, if you want to use the foil again instantly, you can but it will erase the previous image at the same time. |
Other items available in our eBay shop 
Sign up for my email newsletters
by adding my eBay Shop to your Favourites
POSTAGE AND PACKING
Please check out our Posting Policy. If you are purchasing more than one item from us please request a total price. We are more than happy to provide a combined invoice which includes DISCOUNTED postage based upon weight AND size.
IMPORTANT - Payment instructions
PAYPAL ONLY please
Powered by eBay Turbo Lister
On 27-Sep-09 at 11:22:40 BST, seller added the following information:International Buyers Following the changes made by eBay on 22 September 2009, we have taken the decision to stop posting to selected international destinations. This is because of extensive problems we have experienced in shipping to these locations which has resulted in our having to subsidise the postage by sending all items by the tracked 'International Signed For' service. Buyers in these destinations are blocked from purchasing our listings. These destinations are: Italy, Afghanistan, Maldives, Kazakhstan, Greece, Turkey, India, Africa, Croatia, Republic of, Moldova, Bangladesh, Nepal, Malta, Korea, North, Azerbaijan Republic, Korea, South, Netherlands, Mongolia, Kyrgyzstan, Bhutan, Uzbekistan, Romania, Cyprus, Bulgaria, Tajikistan, Sri Lanka, Turkmenistan, Albania, Pakistan, Armenia, Georgia
Business Seller Information
Value Added Tax Number: UK 840976011 | ||||||
Return policy
| ||
