'Take a hunk of permalloy, wrap a wire around it, send current through the wire & the hunk becomes one of these'
an electromagnet
THE ALLOYS: Take a hunk of permalloy, wrap a wire around it, send current through the wire & the hunk becomes one of these
Take a hunk of permalloy, wrap a wire around it, send current through the wire & the hunk becomes one of these
Take a hunk of permalloy, wrap a wire around it, send current through the wire & the hunk becomes one of these
THE ALLOYS
an electromagnet
THE ALLOYS