Investigating viscous damping using a webcam

Shamim, Sohaib; Zia, Wasif; Anwar, Muhammad Sabieh

doi:10.1119/1.3298370

Cited by 29 publications

(33 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] .…”

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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“…Electronic devices such as digital cameras [1], webcams [2], optical computer mice [3,4] and game controllers [5][6][7] allow us to determine fundamental physics properties through the design of new and interesting experiments.…”

Section: Introductionmentioning

confidence: 99%

Determining the efficiency of optical sources using a smartphone’s ambient light sensor

et al. 2016

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This work reports the use of a smartphone's ambient light sensor as a valuable tool to study and characterize the efficiency of an optical source. Here, we have measured both luminous efficacy and efficiency of several optical sources (incandescent bulb and halogen lamp) as a function of the electric power consumed and the distance to the optical detector. The illuminance of LEDs as a function of the distance to the optical detector is characterized for different wavelength emissions. Analysis of the results confirms an inverse-square law of the illuminance with the detector-source distance and shows good agreement with values obtained by classical experiments. This experience will trigger awareness in students in terms of sustainability, light propagation and efficiency of different optical sources.

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“…Various experiments using digital cameras [1], webcams [2], optical mouse of computers [3,4], wiimote [5], and other game console controllers [6] have been reported. For instance, physical processes can be followed and analyzed by using a simple digital camera [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Using a smartphone acceleration sensor to study uniform and uniformly accelerated circular motions

Castro-Palacio

Velázquez

Gómez-Tejedor

et al. 2014

Rev. Bras. Ensino Fís.

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The acceleration sensor of a smartphone is used for the study of the uniform and uniformly accelerated circular motions in two experiments. Data collected from both experiments are used for obtaining the angular velocity and the angular acceleration, respectively. Results obtained with the acceleration sensor are in good agreement with alternative methods, like using video recordings of both experiments and a physical model of the second experiment. Keywords: rigid solid, mobile application, accele rometer sensor.Neste trabalho foi utilizado o sensor de aceleração de um smatphone em dois experimentos a fim de estudar o movimento circular uniforme e uniformemente acelerado. Os dados coletados em ambos os experimentos foram usados para obter a velocidade angular e a aceleração angular, respectivamente. Os resultados obtidos com o sensor de aceleração apresentam boa concordância com outros métodos alternativos, como usando gravações em vídeo de ambos experimentos e um modelo físico do segundo experimento. Palavras-chave: sólido rígido, aplicativo de celulares, acelerômetro.

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Investigating viscous damping using a webcam

Cited by 29 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

Determining the efficiency of optical sources using a smartphone’s ambient light sensor

Using a smartphone acceleration sensor to study uniform and uniformly accelerated circular motions

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