In a Lab Accident, Scientists Create the First-Ever Permanently Magnetic Liquid

flowerlad wrote: post #5

gregallan wrote: post #3

Earlier quoted context omitted.

Care to elaborate?

Magnets have the ability to pull things. This is energy being expended. But we know energy cannot be created, so it must be depleted after some time.

ALL permanence is relative, due to entropy, as you tried to say. We still use the word permanent as a useful term.

Permanent, in the headline, is certainly meaning something like a ferrite magnet or ceramic magnet. "Permanent" meaning it does not naturally lose it's coercivity in any perceptually measurable way. This is different than saying a substance can't have the coercivity reduced.

> https://www.physlink.com/education/askexperts/ae472.cfm

Re: In a Lab Accident, Scientists Create the First-Ever Permanently Magnetic Liquid

#7

Post by [deleted] » Fri, Jul 26, 2019, 10:00 PM UTC

reallydude wrote: post #6

flowerlad wrote: post #5

Earlier quoted context omitted.

Magnets have the ability to pull things. This is energy being expended. But we know energy cannot be created, so it must be depleted after some time.

ALL permanence is relative, due to entropy, as you tried to say. We still use the word permanent as a useful term. Permanent, in the headline, is certainly meaning something like a ferrite magnet or ceramic magnet. "Permanent" meaning it does not naturally lose it's coercivity in any perceptually measurable way. This is different than saying a substance can't have the coercivity reduced. > https://www.physlink.com/ed…

[deleted]