{"title":"Solution to the March 2023 Challenge 2C and not 2C*","authors":"","doi":"10.1119/10.0018009","DOIUrl":"https://doi.org/10.1119/10.0018009","url":null,"abstract":"","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":"25 6","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41257936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Can you name a science event that will engage 100 million people? I can: a total eclipse of the Sun. NASA surveys found that many people saw the 2017 Great American Eclipse, either in person or online. In 2023 and 2024, two solar eclipses will be visible throughout the US, and we have a great opportunity to enable students and others to enjoy a rare spectacle (Fig. 1). This article is to help you prepare yourself, students, friends, and neighbors for the upcoming eclipses. It debunks some of the most common misconceptions that I have seen during the 12 eclipses I’ve experienced. It also explains how you can make a profit for your school or organization, as my school has done. People will thank you for providing safe eclipse-watching glasses that they did not know to order in advance, and for information and guidance about how to watch an eclipse, things to look for, and how to take pictures with a phone. Phone images of the Sun and Moon can be the basis for educational activities; I’ll give one example.
{"title":"Prepare for the 2023 and 2024 Solar Eclipses! School and Community Events and Fundraising","authors":"Douglas Duncan","doi":"10.1119/5.0131185","DOIUrl":"https://doi.org/10.1119/5.0131185","url":null,"abstract":"Can you name a science event that will engage 100 million people? I can: a total eclipse of the Sun. NASA surveys found that many people saw the 2017 Great American Eclipse, either in person or online. In 2023 and 2024, two solar eclipses will be visible throughout the US, and we have a great opportunity to enable students and others to enjoy a rare spectacle (Fig. 1). This article is to help you prepare yourself, students, friends, and neighbors for the upcoming eclipses. It debunks some of the most common misconceptions that I have seen during the 12 eclipses I’ve experienced. It also explains how you can make a profit for your school or organization, as my school has done. People will thank you for providing safe eclipse-watching glasses that they did not know to order in advance, and for information and guidance about how to watch an eclipse, things to look for, and how to take pictures with a phone. Phone images of the Sun and Moon can be the basis for educational activities; I’ll give one example.","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45779454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Every year, I look forward to doing my Frequency Fun Lab. This is a kinesthetic experiment in which students get to measure their own maximum rates of frequency in performing a few simple tasks for 20 s. For example, how many times can you snap your fingers in that given time? From these data, they also calculate the period of each effort. In the end, the students learn to work with the units of frequency (cycles per second or hertz) and period (seconds). By graphing their data, they also learn to recognize the inverse relationship between period and frequency. In this paper, I discuss a lab that is fun and effective, involves no cost, requires no equipment, and can be done any time of year or whenever you have an extra 30 or 40 min in your teaching day (including emergency sub plans!).
{"title":"Frequency fun lab","authors":"J. Lincoln","doi":"10.1119/5.0147476","DOIUrl":"https://doi.org/10.1119/5.0147476","url":null,"abstract":"Every year, I look forward to doing my Frequency Fun Lab. This is a kinesthetic experiment in which students get to measure their own maximum rates of frequency in performing a few simple tasks for 20 s. For example, how many times can you snap your fingers in that given time? From these data, they also calculate the period of each effort. In the end, the students learn to work with the units of frequency (cycles per second or hertz) and period (seconds). By graphing their data, they also learn to recognize the inverse relationship between period and frequency. In this paper, I discuss a lab that is fun and effective, involves no cost, requires no equipment, and can be done any time of year or whenever you have an extra 30 or 40 min in your teaching day (including emergency sub plans!).","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42531244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The macroscopic force (called the Laplace force) acting on a wire carrying an electric current placed in a magnetic field is a consequence of the Lorentz force acting on each charge inside the wire. Typically, the Laplace force is explained as a magnetic force resulting from the interaction of the moving charges with the external magnetic field. Such an interpretation, however, is too simplistic and does not take into account all the interactions between the various charge populations inside the wire. This leads to a series of paradoxes that might hinder the understanding of this subject. For instance, a magnetic force cannot do any work, while a current-carrying wire in a magnetic field represents the paradigm to understand the working principle of an electric motor. Here, we will solve this and other inconsistencies by showing, with simple arguments comprehensible to undergraduate students, that the Laplace force is instead an electrostatic force.
{"title":"Origin of the Laplace Force Applied to a Current-Carrying Wire Immersed in a Magnetic Field","authors":"M. Finazzi, M. Zani","doi":"10.1119/5.0096757","DOIUrl":"https://doi.org/10.1119/5.0096757","url":null,"abstract":"The macroscopic force (called the Laplace force) acting on a wire carrying an electric current placed in a magnetic field is a consequence of the Lorentz force acting on each charge inside the wire. Typically, the Laplace force is explained as a magnetic force resulting from the interaction of the moving charges with the external magnetic field. Such an interpretation, however, is too simplistic and does not take into account all the interactions between the various charge populations inside the wire. This leads to a series of paradoxes that might hinder the understanding of this subject. For instance, a magnetic force cannot do any work, while a current-carrying wire in a magnetic field represents the paradigm to understand the working principle of an electric motor. Here, we will solve this and other inconsistencies by showing, with simple arguments comprehensible to undergraduate students, that the Laplace force is instead an electrostatic force.","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44074848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Postgraduation planning during the pandemic","authors":"Susan C. White","doi":"10.1119/5.0147688","DOIUrl":"https://doi.org/10.1119/5.0147688","url":null,"abstract":"","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42778087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"(University) Physics in a Nutshell by Tobias Wegener","authors":"D. MacIsaac","doi":"10.1119/10.0017701","DOIUrl":"https://doi.org/10.1119/10.0017701","url":null,"abstract":"","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45468209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We have developed a new simple experiment for the students where they can get a quantitative measure of how the resistance of a wire depends on the temperature of the wire. The only materials required are a copper wire coil, a DC voltage source, a digital ohmmeter, and a calorimeter with an analog thermometer. The students discover a linear relationship between temperature and resistance. The temperature coefficient is easily calculated from the slope of the graph and compared with the standard values. The experiment, although simple to perform and feasible with minimal equipment, does provide reasonable results and is appropriate for either high school students or an undergraduate physics laboratory. Also, the work would be of interest to teachers in an introductory-level physics course.
{"title":"A Useful Experiment for Teaching Resistance of a Wire as a Function of Temperature","authors":"M. Kovačević, M. Milošević, Lj. Kuzmanović","doi":"10.1119/5.0089514","DOIUrl":"https://doi.org/10.1119/5.0089514","url":null,"abstract":"We have developed a new simple experiment for the students where they can get a quantitative measure of how the resistance of a wire depends on the temperature of the wire. The only materials required are a copper wire coil, a DC voltage source, a digital ohmmeter, and a calorimeter with an analog thermometer. The students discover a linear relationship between temperature and resistance. The temperature coefficient is easily calculated from the slope of the graph and compared with the standard values. The experiment, although simple to perform and feasible with minimal equipment, does provide reasonable results and is appropriate for either high school students or an undergraduate physics laboratory. Also, the work would be of interest to teachers in an introductory-level physics course.","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48498900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Studies have shown that students have difficulties in explaining concepts related to energy. Here, we report on an activity in which students analyze three similar energy scenarios, examining their own data taken with the aid of an Arduino microcontroller. In addition to learning about energy, students gain electronic skills, programming skills, and data analysis skills through these exercises.
{"title":"Energy Conservation Analysis Using Arduino","authors":"A. Çoban, Niyazi Çoban, Emine Çoban","doi":"10.1119/5.0067534","DOIUrl":"https://doi.org/10.1119/5.0067534","url":null,"abstract":"Studies have shown that students have difficulties in explaining concepts related to energy. Here, we report on an activity in which students analyze three similar energy scenarios, examining their own data taken with the aid of an Arduino microcontroller. In addition to learning about energy, students gain electronic skills, programming skills, and data analysis skills through these exercises.","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43822099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Converging through the window","authors":"F. J. Torcal-Milla","doi":"10.1119/5.0091999","DOIUrl":"https://doi.org/10.1119/5.0091999","url":null,"abstract":"","PeriodicalId":48709,"journal":{"name":"Physics Teacher","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49257571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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