- #1
ctech4285
- 32
- 0
the theory
magnetic field is produced by moving electric charges
the field is proportional to the quantity and velocity of those charges
the velocity of electrons is about 1mm/s at 15A/mm~2 in copper
the velocity of a cd spinning is about 1000RPM 6m/s 6000 times more the the speed of the electrons
so if the electrons where to flow around a cd that is spinning at 6m/s the electrons should move at 6.001m/s and the field 6000 times stronger
the setup
a cd with copper wire wound around it (20windings) with two contacts (see picture) that are connected to a pc power supply at 12V results in about 2A.
the screwdriver has a magnetic tip and rotates about 45deg when current is flowing throw the copper coil wile not spinning.
the result
the screwdriver moves exactly the same amount??!
anyone has an idea? electron velocity not in the mm/s range?
magnetic field is produced by moving electric charges
the field is proportional to the quantity and velocity of those charges
the velocity of electrons is about 1mm/s at 15A/mm~2 in copper
the velocity of a cd spinning is about 1000RPM 6m/s 6000 times more the the speed of the electrons
so if the electrons where to flow around a cd that is spinning at 6m/s the electrons should move at 6.001m/s and the field 6000 times stronger
the setup
a cd with copper wire wound around it (20windings) with two contacts (see picture) that are connected to a pc power supply at 12V results in about 2A.
the screwdriver has a magnetic tip and rotates about 45deg when current is flowing throw the copper coil wile not spinning.
the result
the screwdriver moves exactly the same amount??!
anyone has an idea? electron velocity not in the mm/s range?