why does a material with randomly aligned magnetic domains fail to exhibit magnetic properties?
Oil companies invest a lot of time and money to get their oil products to meet industry standards. Certain balances of additives in this oil exist to maintain its quality. When we add other additives we dilute the oil and mess up the balances, offsetting any benefits. Much better to use the best oil you can afford and change it and the filter often.
No car manufacturer recommends using them and some even recommend specifically they not be used. Since these are the folks who design and build your engine I would trust them, not the guy looking to make a buck off your guilt by claiming you need to use their product to take care of your car properly.
If you sell them they are great MONEY. Check your warranty It may not be valid if you use them
There will be a quick FOOTBALL MEETING in the media center after school on Wednesday, May 11 to go over summer information.
All materials have magnetic properties. The question is which property you're interested in. I'm going to guess that you're asking why a material with random magnetic domains doesn't have a [strong] magnetic field. The reason is because it has random domains. The domains are arranged randomly, so they can't reinforce each other. They even cancel each other out. However, if the domains can be aligned with an external magnetic field, then the material will maintain an internal field. This is called ferromagnetism if the internal field is maintained after the removal of the external field, and paramagnetism if the domains randomize as the external field is removed.
