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!

Sunday, April 25, 2010

"Two birds with one stone"

       The reason I chose to title this photo "Two birds with one stone," is because this is a similar situation. Two reflections with one photo! The first refection in this photo is the reflected image on the rifle scope. You can see the image of the window on the glass of the scope. If you look closely, you can tell that there are two images on the scope. They are both the same image, except the one on the left is upright, and the one on the left is inverted. The reason for this is because there are two lenses on a rifle scope. There is one at the beginning of the scope, and one at the end. The upright image is on the end lens of the scope. The image goes through the end glass, and reflects off the beginning glass. Then the image is reflected on to the other side of the back lens, making it inverted.  The second reflection in he picture is the window reflecting an image on to the table, which we can see on the lens of the rifle. There is so much physics in just one photo!

Tuesday, March 23, 2010

Einstein's Quote Reflection

The quote i chose was, "Its not that I'm so smart, it's just that i stay with problems longer." I really liked this quote because it goes to show that you don't have to be smart to solve difficult problems. If you stick with the problem long enough, you will be able to answer it. I also liked this because this is what i am working on with my problems, being able to stick with them long enough so i am able to get a precise answer instead of giving up on them right after i read it. I think that being able to stick with problems long enough to where you can get a good answer is a huge part in being "smart." Smart doesn't mean getting everything right all the time, it means trying your hardest, and not giving up. Sticking with problems for a long time is for sure a huge part of being smart!