No it is not made of cells it is dead a safety pin is not alive
Milligrams.
Yes........
No it is not a safe thing to do. Safety wise you will be going backwards instead of forwards. The third pin was added as a safety precaution to return fault currents directly back to the distribution panel. This is turn trips the over current breaker instantaneously and removes the fault from the system.
no, a feather is not made out of cells
Of course . You can make such a magnet easily using a safety pin. Take a safety pin and magnetize it using a permanent magnet. Then unfold it. The ends will have same poles and at the middle you will have the other. So you can have a magnet with three poles. Verify it using compass.
The modern safety pin was invented by mechanic Walter Hunt in 1849.
1890
walter hunt
steel
The safety pin has a pin that goes into the head of the pin, and you push the point in or out of the head of the pin.
a safety pin
The safety pin was invented by Walter Hunt in 1849. Hunt 1795-1859) patented the safety pin on April 10, 1849 (patent No. 6,281). Hunt's pin was made by twisting a length of wire. Hunt invented the safety pin in order to pay a debt of $15; he eventually sold the rights to his patent for $400.
safety pin
safety pin
The safety pin was invented to pay off a debt.
In 1850, a safety pin cost around 1 to 2 cents, depending on the quality and size of the pin. Some higher-quality pins may have been more expensive, but this was the general price range for a standard safety pin during that time period.
why did Walter hut make the safety pin