A quantitative analysis of coupled oscillations using mobile accelerometer sensors

Castro-Palacio, Juan Carlos; Velázquez-Abad, Luisberis; Giménez, Fernando; Monsoriu, Juan A.

doi:10.1088/0143-0807/34/3/737

Cited by 53 publications

(47 citation statements)

References 19 publications

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“…Numerous investigations have been published on laboratory experiments in which digital cameras or webcams are used [3][4][5][6][7] , optical mice 8,9 and games consoles and their wireless devices which control the games [10][11][12][13][14] . Also the sensors of smartphones are beginning to be used to make precise measurements [15][16][17][18][19][20] . These sensors allow carrying out direct measurements of physical magnitudes if we have previously downloaded specific applications, most of which are free, that allow us to show measurements on the screen of the smartphone, store them and even do a graph with the results.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses

et al. 2015

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In this work we propose an inexpensive laboratory practice for the laboratory of an introductory course of Physics for any grade of Sciences and Engineering, which was very well received by our students, where a smartphone (iOS, Android or Windows Phone is irrelevant) is used together with some mini magnets, similar to those that can be found in the door of our refrigerators, a 20 cm long school rule, a paper and a free application (app) for measuring the magnetic field using the magnetic fields sensor or magnetometer of the smartphone, which needs to be downloaded and installed. The apps we have used are: Magnetometer (iOS), Magnetometer Metal Detector and Physics Toolbox Magnetometer (Android). Nothing else is needed. Cost of this practice: 0 coins. The main purpose of the practice is that students determine the dependence of the component x of the magnetic field produced by different magnets (from the typical magnets that are decorated in refrigerators even with a ring magnet and spherical magnet). We have obtained that the dependency of the magnetic field with the distance is of the form x -3 , in total agreement with the theoretical analysis. The secondary objective is to apply the technique of least squares fit to obtain this exponent and the magnetic moment of the magnets, with theirs corresponding absolute error.

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Section: Introductionmentioning

confidence: 99%

Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses

et al. 2015

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“…Then, a comparison with the theoretical expressions (3) to (9) allows students to check the accuracy of the theoretical model and experimental results, as well as to study the influence of different parameters on the vibration frequencies. Figure 7 shows the comparison of the experimental frequencies and the theoretical values calculated using expressions (3) to (9). The experimental results shown in figure 7 correspond to an average of the Fourier transforms of three independent measurements of the vibrations of a steel rod with length = L 0.35 m and cylindrical section of radius = -r 0.925 10 3 · m. For the calculation of theoretical values, the Young's modulus and density values were taken from [40].…”

Section: Experiments and Resultsmentioning

confidence: 99%

Smartphones as experimental tools to measure acoustical and mechanical properties of vibrating rods

González

2016

Eur. J. Phys.

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Modern smartphones have calculation and sensor capabilities that make them suitable for use as versatile and reliable measurement devices in simple teaching experiments. In this work a smartphone is used, together with low cost materials, in an experiment to measure the frequencies emitted by vibrating rods of different materials, shapes and lengths. The results obtained with the smartphone have been compared with theoretical calculations and the agreement is good. Alternatively, physics students can perform the experiment described here and use their results to determine the dependencies of the obtained frequencies on the rod characteristics. In this way they will also practice research methods that they will probably use in their professional life.

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“…The accelerometer sensor has been used to study the simple pendulum phenomena and harmonic oscillations [17][18][19][20]. In addition, the smartphone acceleration sensors were used to quantitatively analyze a system of coupled oscillators [21]. Furthermore, the smartphone ambient light sensor has been used to study a system of two coupled springs [22].…”

Section: Introductionmentioning

confidence: 99%

Solar Irradiance Measurements Using Smart Devices: A Cost-Effective Technique for Estimation of Solar Irradiance for Sustainable Energy Systems

Al-Ta’ani

Arabasi

2018

Sustainability

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Solar irradiance measurement is a key component in estimating solar irradiation, which is necessary and essential to design sustainable energy systems such as photovoltaic (PV) systems. The measurement is typically done with sophisticated devices designed for this purpose. In this paper we propose a smartphone-aided setup to estimate the solar irradiance in a certain location. The setup is accessible, easy to use and cost-effective. The method we propose does not have the accuracy of an irradiance meter of high precision but has the advantage of being readily accessible on any smartphone. It could serve as a quick tool to estimate irradiance measurements in the preliminary stages of PV systems design. Furthermore, it could act as a cost-effective educational tool in sustainable energy courses where understanding solar radiation variations is an important aspect.

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A quantitative analysis of coupled oscillations using mobile accelerometer sensors

Cited by 53 publications

References 19 publications

Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses

Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses

Smartphones as experimental tools to measure acoustical and mechanical properties of vibrating rods

Solar Irradiance Measurements Using Smart Devices: A Cost-Effective Technique for Estimation of Solar Irradiance for Sustainable Energy Systems

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