Wednesday, May 19, 2010

Light Rocks! (explanations)

Image 1: This is an image of of a series circuit. There is one, equal current running through the whole circuit. The voltage remains the same throughout the whole series circuit. This is because there are no resistors, and in a series circuit, the voltage always remain the same.

Image 2: This is an image of a complex circuit. In this circuit, I have a parallel circuit, and a series circuit. The voltage is different in this circuit. The 1 light bulb in the series circuit is brighter than the 2 light bulbs in the parallel circuit because it has more voltage. The two light bulbs in the parallel circuit have the same voltage. The current in the parallel circuit is different to the current in the series circuit because it has more resistors.

Image 3: This image is of a parallel circuit. In this circuit, the voltage is the same between the two light bulbs. The current is the same in the parallel circuit. The current is equal to the voltage divided by the risistance. Since the voltage and resitance of both light bulbs are the same, the current is the same.

Light rocks! (images)

Monday, May 3, 2010


1.   This is what i learned about optics.  I learned that because of the law of reflection, the angle of incidence is equal to the angle of reflection. I learned how to draw the rays of the reflection's of the mirrors. I learned how to tell the difference between a virtual and real image, and i learned how to fin the image of an object by drawing rays. I learned all the different equations of mirrors, and i learned that if the distance of the image is +, then it is real (mirrors). Then i learned all about lenses. I learned how to draw the rays for lenses. Finally, i learned about total internal reflection. For incident angles greater than the critical angle, there is no refracted ray at all, causing total internal reflection.

2.  What i have found difficult about optics is knowing how to draw the rays for all the different types of mirrors and lenses. For mirrors, there are convex, concave and flat. For lenses there are diverging and converging. For each of these, there are three rays.  Luckily we only had to know 2! I got confused on all the different rays, and then got confused on how to tell which image was real or virtual.

3.  My problem solving skills were the strongest they ever have been during this chapter. I was not intimidated at all by any long problems, and I always knew how to do them. I took them step by step, and solved them fully. The only thing i had a little trouble on was realizing whether and image was real or virtual, but i eventually learned how to tell the difference!