Beginners Guide To Beyblades And Accessories

Press down on the edges of the Play-Doh ball to flatten it onto the pie pan a little so that it looks like Figure 15. You can also use the double-sided tape to attach the Play-Doh onto the pan. Top view of the straw and nut being attached to the windmill. Side view of the straw and nut being attached to the windmill.
You should notice that every time the aluminum strip passes above the light sensor, a dip occurs on your graph. Once you have set up your carousel and tested your light sensor successfully, place the phone next to the carousel with the light sensor facing upwards. Use several books or a box to elevate your phone so it sits just underneath the aluminum strip. Position the phone so that the aluminum strip blocks the light sensor every time it is above the phone as shown in Figure 18. Make sure that the movement of the carousel is not hindered in any way.
Use a permanent marker to make a dot in the center of the windmill, on its underside. Flip the windmill over so that the triangular edges are pointing up. In the center of the windmill, make a small dot using a permanent marker, as shown in Figure 11.

You can clearly see the drop in light intensity every time the aluminum strip blocked the light from your flashlight which results in a negative peak. Pick a 60 second interval of your graph and count the number of negative peaks. That means if you count the number of drops, or negative peaks, for one minute, your result will be the number of rotations per minute.
Cut along the solid lines of the template and the aluminum circle below it, as shown in Figure 7. Be sure not to cut all the way to the center of the circle.
In the example shown in Figure 19, the carousel made 21 rotations per minute. After about 1. 5 minutes, stop recording and repeat step 8 four more times so that you have done a total of five trials for this number of lit candles. Observe the light sensor readings on the display of your phone. It should be relatively constant if you do not move your light source too much.
To do this, set it up on a flat, stable surface that is not near any source of air movement. For example, set it up in a room with closed doors and windows, and away from any active air vents. Even a gentle breeze can completely disrupt the candle carousel's movement. Then take a small fist-sized piece of Play-Doh and stick the flat end of the skewer into it. Place the Play-Doh and skewer onto the center dot of the aluminum pie pan.
You should use a ruler to find the center by measuring along the length of each flat strip and calculating where the center of each of the strips is; where they all intersect is the center. Gently remove the paper template from the aluminum windmill. Gently remove the paper template from the aluminum circle, which should now look like an aluminum windmill, as shown in Figure 9. You will need to remove the paper template for your candle carousel to work.