Powdered Neodymium Magnets? - Projects - Science Forums
2007年11月20日 · Neodymium compounds' date=' like all rare earth metals, are of low to moderate toxicity; however its toxicity has not been thoroughly investigated. Neodymium dust …
if you put 2 magnets together, is it twice as strong?
2010年3月24日 · yeah if both magnets are exactly similar then strength should not increase acc to my expectation!! because joining increases only the path of magnetic field in the magnet the …
Magnetic Efficiency - Classical Physics - Science Forums
2006年4月23日 · One is an NIB (rare earth magnet, really powerful) and one is a fridge magnet (vey weak). Now, you also have a fixed lenth of wire connected to an ammeter/voltmeter. If …
Magnetic Field "Blocker" - Classical Physics - Science Forums
2005年7月4日 · It uses normal magnets' date=' so it can be (more or less) as expensive or inexpensive as you want, according to your power needs, and it augments the field on one …
spherical magnet - Physics - Science Forums
2009年3月10日 · given an unstable arragement of magnets but with a little energy persuade it to stay, perhaps a spherical magnet is possible, a monopoled one. what if, we reverse the …
Creating a battery out of magnets? - Science Forums
2011年2月25日 · ATPs, or Adenosine Triphosphate which uses a negatively charged phosphate in concentration to energize the body. So my question is, can you make a battery harnessing …
how to use earths natural magnetic force to create a hoverboard
2013年7月11日 · Earth's North pole does, as any magnet, repel a magnet with North under, and so would Earth's NS field repel a NS magnet, but... Take 1m 3 of best magnets with 1MA/m. If …
Maglevs and Vacuum Tunnels - Science Forums
2010年2月13日 · permanent magnets of the strength and quantity needed would be very very expensive and likely take decades to manufacture and use up our supplies of neodynium(its …
There are a lot of earth problems created by man.
2024年6月29日 · As long as the earth exists as a planet, it may still have conscious living things on board. Maybe not Homo sapiens sapiens as we know them today. Maybe intelligent …
Making Ferrofluid - Chemistry - Science Forums
2006年1月20日 · I got some oleic acid from ebay.Im waiting for it to arrive. You'd be amazed what you can find on ebay. There are several chemical companies that set up shop there. You can …