PHY100H5 Lecture Notes - Lecture 8: Plum Pudding Model, Eugenius Warming, Static Electricity
Document Summary
In nature, light exists as waves and particles (phenomena can be explained when it is in particle form, and when it is wave form; it is dual) Static effect: something that is charged forces something to bend towards or away from it (depending on if the two charges are opposite or like) Charges can be positive or negative, and the forces can be attractive or repulsive (unlike gravity!) Charging can happen if you rub two things together. Ru(cid:271)(cid:271)i(cid:374)g is (cid:374)ot gra(cid:448)itatio(cid:374)al (cid:271)e(cid:272)ause it does(cid:374)"t (cid:272)o(cid:373)e i(cid:374)to pla(cid:455) (cid:449)he(cid:374) (cid:455)ou ru(cid:271) thi(cid:374)gs together: gravity can be only attractive; but electric charges can be attractive (opposite charges) and repulsive (like charges) The electric force is much larger than the gravitational force! Like charges repel; (+) and (+) or (-) and (-: unlike charges attract; (+) and (-) As the objects get further from each other, the electric forces get weaker.
