Measuring average angular velocity with a smartphone magnetic field sensor

Pili, Unofre; Violanda, Renante

doi:10.1119/1.5021442

Cited by 20 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mobile devices can provide meaningful assistance to users in their work, study, and entertainment. They have been widely used in recent years within the process of instruction in different disciplinary fields, [4][5][6][7][8][9][10][11][12][13][14] although the effects on learning and the purpose given to them in the classroom are still being studied. Furthermore, smartphones are becoming the data recorders of portable physics laboratories for a variety of measurements in astronomy, mechanics, thermodynamics, electromagnetism, and optics among others, either using the internal sensors of cell phones or diverse applications.…”

Section: Background Informationmentioning

confidence: 99%

Linear Quadrupole Magnetic Field Measured with a Smartphone

Garde

Escobar

Ramirez-Vazquez

et al. 2020

The Physics Teacher

View full text Add to dashboard Cite

We believe that a natural focus of the physics education research community is on understanding and improving students’ learning in our physics courses. Due to the increase in technology, we can bring laboratory experiments closer to our students. It is necessary to update our laboratories technologically to get closer to the world in which our students live. With this in mind, we have considered the magnetic field created by a linear quadrupole and we have studied its dependence on distance, n being the exponent of distance. The main objective of this exercise is for our students to discover that the exponent n is very close to –4. The purpose of this work is to show that a laboratory is a powerful tool that increases significant learning under three conditions: 1) the practice must not be too sophisticated; 2) students must handle objects in the lab; and 3) the practice must be scientifically accurate, including the fitting using the least-squares approximation, and the following and necessary error calculation. We provide this practice so that all interested physics teachers can use it and adapt it to their specific laboratory.

show abstract

Section: Background Informationmentioning

confidence: 99%

Linear Quadrupole Magnetic Field Measured with a Smartphone

Garde

Escobar

Ramirez-Vazquez

et al. 2020

The Physics Teacher

View full text Add to dashboard Cite

show abstract

“…In the literature, the smartphone-based acceleration sensor has been employed in a rather quick measurement of the acceleration due to gravity [8] and in analyzing simple pendulum phenomena [9]. In contrast, applications of the magnetic field sensor of the smartphone device are less discussed [10], but recently demonstrated for the measurement of the air permeability [11], the field distribution around small magnets [12], flyby measurements with combined acceleration and magnetic field recording [13], the average angular velocity [14], a magnetic pendulum to measure the acceleration due to gravity [15], and measurement of a spring constant [16].…”

Section: Introductionmentioning

confidence: 99%

Measurement of the characteristics of the Earth’s magnetic field using a smartphone magnetic sensor

Koblischka¹,

Koblischka-Veneva²

2022

Phys. Educ.

View full text Add to dashboard Cite

Several properties of Earth’s magnetic field (field vectors, time dependence) are measured in various locations using a smartphone/tablet magnetic sensor. To enable a proper use of the magnetic sensor as a classroom tool, the exact location of the sensor in the device and its resolution must be identified in a first step. Then, students may perform several measurements on their own, allowing a comparison of the recorded field vectors and a discussion of the possible deviations. We also show that long-time measurements of the local magnetic field are possible using the smartphone sensors, which can be compared to available internet data. All the information obtained enables a better understanding of the properties of the Earth’s magnetic field and of the requirements for real applications of magnetic sensor elements.

show abstract

“…Smartphones have many applications and sensors that have been developed rapidly to help physics practicum activities (Klein et al, 2014;Kuhn & Vogt, 2012;Monteiro et al, 2015;Osario et al, 2017;Parolin & Pezzi, 2015;Pili & Violanda, 2018;Zakwandi et al, 2021). Among the available applications are Phypox and the physics toolbox.…”

Section: Introductionmentioning

confidence: 99%

Smartphone for physics practicum in momentum and impulse

Nuryantini

Zakwandi

Ariayuda

2022

Momentum: Physics Education Journal

View full text Add to dashboard Cite

Practicum is an important part of Physics learning that cannot be ignored even in distance learning. Obstacles of practicum facilities faced by students can be overcome by using sensor on smartphones as a measuring tool. In this study, the use of the accelerometer sensor on a smartphone has been carried out to analyze the concept of momentum and impulse through the collision of two toy cars. Two toy cars A and B with smartphones attached have their respective masses of m1 0.31345 kg and m2 0.32116 kg. Car A was idle and car B was moved until it collided car A. In the event of a collision, the accelerometer sensor recorded acceleration data (a) versus time (t). Data (a) versus time (t) was represented in the form of a curve. Next, the data were analyzed. From the graph obtained data t1 =1.237 seconds, when car B started to exert a contact force on car A. The contact time between cars was ï„t = 0.025 seconds. The maximum acceleration experienced by car A during a collision was a = 27.919 m/s2. From the area of the curve (a) vs (t) the impulse value was 0.1217 (N. sec) which is also the value of the change in momentum of car A, with car A's speed after the collision of 0.427 m/s. Thus, the accelerometer sensor on a smartphone can be used to assist students in finding important concepts through practical activities. The use of the accelerometer sensor is expected to help students to facilitate understanding the concepts of momentum and impulse.

show abstract

Measuring average angular velocity with a smartphone magnetic field sensor

Cited by 20 publications

References 4 publications

Linear Quadrupole Magnetic Field Measured with a Smartphone

Linear Quadrupole Magnetic Field Measured with a Smartphone

Measurement of the characteristics of the Earth’s magnetic field using a smartphone magnetic sensor

Smartphone for physics practicum in momentum and impulse

Contact Info

Product

Resources

About