course phy 202

Here is some labs that I had failed to turn in! The date for these labs was 02/26/07

There were three candles set up next to a beaker of water. They were set up so that no one candle's refractions upset another candle's refractions. The diameter of the cylinder was 16.7cm

The candle was 3.6 cm away from the cylinder.

When measuring the reflection from the edge of the cylinder our goal was to try to get the reflection to be as even as possible. By even I mean that we wanted the reflection to stay the same width uniformly. This is not entirely perfect but it was as close as I could get to uniform.

Distance from edge of cylinder Width of reflection

5cm 11cm

10cm 10.5cm

15cm 10.5cm

20cm 10.5cm

25cm 10.5cm

30cm 10.5cm

The candle flame was 5cm high and 3.6 cm away from the cylinder.

Also since I measured from the edge of the cylinder, I would probably have to take half of 16.7cm to get the radius and add that to each of my measurements that way I would be measuring from the center of the cylinder.

We then took 1 lens and tried to make a spotlight with it.

Distance from Diameter of

lens to candle the spotlight

5.2cm 3.8cm 10cm

5.2cm 3.3cm 20cm

5.2cm 3.0cm 30cm

5.2cm 3.2cm 40cm

When we tried to get a good reflection of the flame on the wall we sort of ran out of time. It was hard using the two lens and trying to get an accurate reflection. Our best reflection was 21cm wide. It was 3.1 meters from the image to the candle. It was 2cm from lens to lens. The 2nd lens was 2cm away from the candle. It was also difficult to get a good reflection because of our crappy lens. It had gunk on it and often distorted the reflection.

"

Good data report.

course phy 202

More labs! Data for honey light experiment.02/19/07

With one candle

Distance between the paper and the honey is 4cm.

Distance between candle Wide of reflections Height of reflection

and Honey on paper on paper

10cm 1.5cm 9.5cm

20cm .6cm 8.5cm

30cm .4cm 8.1cm

40cm .2cm 7.2cm

With two candles the data was kind of confusing because I realized that I didn't correctly write everything down but here it is as correctly as I could get it!

The paper was 7cm away from the honey.

Distance between candle Distance between Height of

and Honey reflections reflections

10cm 2.5cm 9.3cm

15cm .4cm 8.8cm

20cm .5cm n/a

25cm .6cm n/a"

The one thing you didn't include is the radius or diameter of the honey jar.