Blog Post 7: Diffraction Experiment with Simulation

Utilizing the difrfaction slides and laser pointers address the following questions.

1. What is the 4 patterns printed on the slides? Somehow draw and post this pattern on your blog, and explain how you arrived at this pattern.

2. Determine the distance between the line patterns on the slides, and how thick the lines may be based on your changing of the simulator to duplicate the pattern you measured.

3. Setup the light wave simulator to simulate the patterns on the 35 mm slides. Grab a picture of these simulations and post them for each of your patterns.


4. Which light can measure smaller things, red light or green light? Post an image of the simulator demonstrating this.

The green light measures smaller objects because the wave length of the green light is a much smaller wavelength

Blog Post 6: Good Nano Websites

Develop a list of at least 10 good Nano websites. Get two types, one of a general nature, and one that is focused on your interests.

1. http://www.nanitenews.com/

2. http://spectrum.ieee.org/semiconductors/nanotechnology

3. http://www.nanoengineer-1.com/content/

4. http://www.lbl.gov/Science-Articles/Archive/MSD-nanoradio.html

5. http://www.stumbleupon.com/su/2G3ODJ/web.mit.edu/newsoffice/2007/nanocomposite.html

6. http://www.memebox.com/futureblogger/show/349

7. http://foresight.org/

8. http://nanosolar.com/

9. http://www.nanotechproject.org/

10. http://nanohub.org/

Blog Post 5: Wave Interference

1. Measure the wavelength of two drops of different amplitude, leave frequency constant.

2. Measure the wavelength of two drops with different frequency, leave amplitude constant.

3. Explain your results for Question 1 and 2.

With the frequency remaining constant the speed at which the wave travels and the number of waves visible remain constant even after changing the amplitude. Thus the wavelength does not changed. When the frequency was changed the number of drops either greatly increased or greatly decreased along with the speed at which the wave traveled. As a result the wavelength differs depending on the set frequency. The conclusion that can be drawn from this is

4. A. Measure the wavelength of the two drips, in cm:

Wavelength= 1.46 cm

B. Then measure distances from each drip(red dots) to the 6 constructive interference points (yellow dots) and report these values, cm

XA=1.63 cm XB= 1.65 XC=2.6 cm XD= 3.56 XE=3.47 XF=3.57

YA=1.65 cm YB=2.64 cm YC=1.67 cm YD=3.55 cm YE=3.5 cm YF=3.5 cm

C. The information above tells us that the two waves overlap and remain constant without interfering with the other. This can be seen through the pattern of measurements recorded, the wavelengths between points remain similar to each other and suggest that the pattern of each wave continue.