Simple Home-Lab Experiments with Digital Discussions - and the world of physics behind
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| Format: | Recurso digital |
| Langue: | anglais |
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Zenodo
2021
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| _version_ | 1866901887249285120 |
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| author | Schmitt, Franz-Josef |
| author_facet | Schmitt, Franz-Josef |
| contents | During the Covid-19 pandemic home-lab experiments were suggested to substitute for closed laboratories and experimental classes. Based on a competition among students in the 2nd semester of the Bachelor of Physics to determine the mass of a fly with home-lab experiments we present the approach of the winner experiment that allows to explore a broad range of physics touching the fields of mechanics, electronics, thermodynamics and statistics.The winner team chose an approach to measure the time that an empty sphere which has nearly the density of liquid water, needs to overcome a fixed distance in a water filled zylindrical tube under gravity. The approach allows for an analytical solution of the problem which can be proven and measured with high accuracy. The small effect of the weight change of the sphere by adding the mass of a fly (0.1 %) is nicely transferred to a macroscopic change of the time needed to sink down to the ground. Further improvements of the experiments are suggested by using different liquids, electronic timers or photsensors for more accurate measurements of time. An interesting approach works with a gradient of the sugar concentration in a zylindrical tube that results in a specific height in the gravitational field that depends on the small weight of the fly inside the sphere. The experiments were discussed online with the students supporting their engagement with additional digital materials and constant supervision. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14651426 |
| institution | Zenodo |
| language | eng |
| publishDate | 2021 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Simple Home-Lab Experiments with Digital Discussions - and the world of physics behind Schmitt, Franz-Josef home-lab practical courses physics blended learning online assessment During the Covid-19 pandemic home-lab experiments were suggested to substitute for closed laboratories and experimental classes. Based on a competition among students in the 2nd semester of the Bachelor of Physics to determine the mass of a fly with home-lab experiments we present the approach of the winner experiment that allows to explore a broad range of physics touching the fields of mechanics, electronics, thermodynamics and statistics.The winner team chose an approach to measure the time that an empty sphere which has nearly the density of liquid water, needs to overcome a fixed distance in a water filled zylindrical tube under gravity. The approach allows for an analytical solution of the problem which can be proven and measured with high accuracy. The small effect of the weight change of the sphere by adding the mass of a fly (0.1 %) is nicely transferred to a macroscopic change of the time needed to sink down to the ground. Further improvements of the experiments are suggested by using different liquids, electronic timers or photsensors for more accurate measurements of time. An interesting approach works with a gradient of the sugar concentration in a zylindrical tube that results in a specific height in the gravitational field that depends on the small weight of the fly inside the sphere. The experiments were discussed online with the students supporting their engagement with additional digital materials and constant supervision. |
| title | Simple Home-Lab Experiments with Digital Discussions - and the world of physics behind |
| topic | home-lab practical courses physics blended learning online assessment |
| url | https://doi.org/10.5281/zenodo.14651426 |