2. I’m COOL!

3. And very SMART!

4. Bet you don’t know how to charge a pith ball by INDUCTION

5. What is a pithball?

6. Voilà!

7. A Styrofoam ball coated with graphite.

8. I told you I was very
SMART!

9. Charging by INDUCTION
Yes, charging by
Induction...

10. Let’s charge the pith ball
Charging by INDUCTION
Let’s charge the pith ball
NET NEGATIVE
by induction.

11. Not Net Negative by Induction.
Charging by INDUCTION
Oh No, Mr. Bill!
Not Net Negative by Induction.

12. Sorry, Sometimes I just get carried away.
Charging by INDUCTION
Sorry, Sometimes I just get carried away.

13. Charging by INDUCTION
Charging by induction is the charging of an isolated conducting object by...

14. ...momentarily grounding it while a charged object is nearby.
Charging by INDUCTION
...momentarily grounding it
while a charged object is
nearby.

15. First we start with a NEUTRAL pith ball..
Charging by INDUCTION
First we start with a NEUTRAL pith ball..

16. A neutral pith ball has an EQUAL number of
Charging by INDUCTION
A neutral pith ball has an EQUAL number of

17. Charging by INDUCTION
PROTONS
and
ELECTRONS!

18. We’ll now show a representative sample of POSITIVELY
Charging by INDUCTION
We’ll now show a representative sample of POSITIVELY
charged protons in our pith ball.

19. For the pith ball to be neutral there must be an equal number of
Charging by INDUCTION
For the pith ball to be
neutral there must be
an equal number of
electrons.

20. Charging by INDUCTION
Remember we are charging the pith ball NEGATIVE by induction therefore we need a POSITIVE rod nearby.

21. Bring the POSITIVELY CHARGED rod close BUT don’t allow it to touch.
Charging by INDUCTION
Bring the POSITIVELY CHARGED rod close BUT don’t allow it to touch.

22. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

23. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

24. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

25. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

26. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

27. Charging by INDUCTION
The electrons in the pith ball are attracted to the positive rod and move close to the rod.

28. Now touch the positive side of the pith ball with a neutral object.
Charging by INDUCTION
Now touch the positive side of the pith ball with a neutral object.

29. This is called grounding.
Charging by INDUCTION
This is called grounding.

30. Charging by INDUCTION
Electrons from the neutral object flow into the positive side of the pith ball.

31. Remove the neutral source of electrons.
Charging by INDUCTION
Remove the neutral source of electrons.

32. Remove the positively charged rod.
Charging by INDUCTION
Remove the positively charged rod.

33. And now you have a NEGATIVELY charged pith ball!
Charging by INDUCTION
And now you have a NEGATIVELY charged pith ball!
NET NEGATIVE

34. Notice the electrons redistribute themselves.
Charging by INDUCTION
Notice the electrons redistribute themselves.
NET NEGATIVE

35. Charging by INDUCTION
Charging Object
The pith ball acquired a net charge that was OPPOSITE that of the charging object by:
NET NEGATIVE

36. Gaining electrons from another neutral object called a ground.
Charging by INDUCTION
Charging Object
Gaining electrons from another neutral object called a ground.
Ground
NET NEGATIVE

37. Charging by INDUCTION
WOW!
NET NEGATIVE

38. Charging by INDUCTION
I luv physicks
NET NEGATIVE

39. Charging by INDUCTION by
Richard Terwilliger
NET NEGATIVE