Thursday, August 23, 2007
haha. i passed the physics test! wohohow. lucky me!
but there's still one more problem. my quizzes. theyre less than half the HPS.
Oh well... better start sucking up on my parents XD.
haha thats all for now. Happy vacation!
- Swish-Slash Swiss-Cross
Friday, August 17, 2007
a certain classmate of mine said that the highest score in the periodic test for our section was 31... which means all of us failed.... ouch.
anyways the test was comparatively easier than the long tests. Easier to guess anyway. but still hard. we were lucky that we hav sci-cals with us XD.
well, thats all folks.
- Swish-Slash Swiss-Cross
Friday, August 3, 2007
Concave and Convex. Diverging and Converging. Negatives and Positive signs. Magnifications and Focal lengths. Pls. no more...
Well to meet up with the requirements, i am
forced to write the steps in how to get the image in the convex and concave mirrors for the ray diagram...
For the Concave Mirror:
1. Prepare materials i.e. ruler, pencil and paper.
2. Draw a line and inscribe a circle of any length.
3. The Circle would be the mirror. Then divide the distance between the radius and the arc of the circle and mark it as the focal point.
4. Place the object in any location except for behind the mirror. [It is recommended that you place a tip of the object in the line]
5. Draw a line from the tip of the object parallel to the principal line. Once it hits the mirror, make the line pass through the focal point and extend as needed.
6. Make another line from the tip of the object passing through the focal point. Once it hits the mirror, it will bounce of and will be parallel to the principal line.
7. Draw a line that will pass through the radius.
8. The intersection of those line is the Image! Hooray!
For the convex mirror:
1. Repeat steps 1-4 for the concave mirror
2. Make a focal point and radius in the back of the mirror. Those will be our basis for the lines.
3. Repeat the construction of the lines, but this time the focal point and radius is in the back.
4. The image that will form is in the back of the mirror and is called a virtual image
- Swish-Slash Swiss-Cross
