| Lab Name |
Frequency vs. Wavelength
|
| Subject Area |
Science (Physics)
|
| Grade |
8
|
| Topic |
Waves
|
| Experiment Title |
Frequency vs. Wavelength
|
| Hardware |
Linux machines (ex laptop, raspberry pi) and 2 Software Defined Radios (ADALM Pluto).
|
| Software |
GNU Radio, COSMOS toolkit framework
|
| Number of Sessions to teach the topic |
1 sessions
|
| Educational standards to be addressed |
Physical Setting/ Physics Core Curriculum
- 4.3c
The model of a wave incorporates the characteristics of amplitude, wavelength,* frequency*, period*, wave speed*, and phase. v=fλ
Common Core Literacy Standard
- CCSS.ELA-Literacy.RST.11-12.8
Evaluate the hypotheses, data, analysis, and conclusions in a science or technical text, verifying the data when possible and corroborating or challenging conclusions with other sources of information.
|
| COSMOS concepts to be used for the lab |
Wireless signals, signal transfer over the air, the relationship between signal strength and distance.
|
| K12 Educational Goals (How the educational goals are achieved through teaching using the experiment, how the topic is connected to the COSMOS concepts used) |
Students have to understand the relationship between frequency and wavelength for this content.
|
| Short Description and Walk-through of the experiment |
In this experiment, students will use 2.4 GHz and 400MHz to model the wifi strength. (At home the typical frequencies of wifi are 5 GHz vs 2.4 GHz; however, since we don’t have the 5 GHz antenna, we will use 400 MHz instead. This will not affect the understanding of the concept of wave properties)
|
| Testbed mapping of the experiment |
The experiment can be extended by executing it into a testbed (ORBIT/COSMOS) through the following steps:
While allocating nodes of the testbed, I think it is very important that we know the signal strength and the possible factors that can affect signal strength.
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© 2019 COSMOS Project. Created by Qiaochu Jia, Forest Hills High School.