Let There Be Light

Electric Compass' were used 3. At is a good conductor of electricity electron 4. Not until after Mechanics 5. Magnetic compass 6. (Tape notes in notebook) Some things attract, others repel. All objects fall and move with respect to gravity. 7. Benjamin Franklin 8. A fundamental element Of mass 9. Like repel, different attract 10. Far apart- hard to tell they are attracting, close together-easy to notice. 11. They both have like currents and likes repel, opposites attract but magnets eave poles not charges.They are still positive and negative. 12. In one direction there I am electric field and in another magnetic, they work together 13. Friction at a distance 14. Attraction would change instantaneously Nothing can travel faster than light 15. 16. The field of force 17. It is the field that tells two objects how to interact 18. The earth's mass is so big that it barely moves 19. Action at a distance is every part of the earth pulling at an object. Whereas a field of force is better bec ause it creates a field for a disturbance to travel wrought. 0. They are centered around something and the farther away from it the weaker the field. 21 . Everything is pulled to the center. The farther from the center the weaker the force. 22. Electric charges in the center 23. In my notebook 24. Because this is our earth, it surrounds us completely 25. Electric generator, electromagnet, electric motor 26. A generator uses motion to make electricity. A motor uses electricity to make motion. 27. Moving it, moving a coil, turning an electromagnet on and off 28. Energy, mass, weather, volts, compounds 9.Credit card, electricity 30. He thought that it was this way and used common sense to then propose this idea. 31 . Electricity make magnetism and magnetism makes electricity 32. The second synthesis is putting magnetism and electricity together as described in Maxwell equations. 33. Because electromagnetism is one of them 34. 35. We are causing a disturbance in the air; predicted waves , speed of waves 36. Because visible light is a form of electromagnetic radiation that travels through a field. Light travels in fields.