Osciloskop pro Android: zvukové experimenty pro každého
| Title in English | Oscilloscope for Android sonic experiments for everyone |
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| Authors | |
| Year of publication | 2015 |
| Type | Chapter of a book |
| MU Faculty or unit | |
| Citation | |
| Description | Sound is a theme that appears in the teaching of physics of elementary schools and secondary schools and has great potential for a variety of interdisciplinary links - you can connect it to music education, uměnovědnými objects, but also mathematics and other subjects. Mostly confined to teaching the theoretical interpretation of experiments supported the demonstration character - normally show beats, various experiments with tuning forks, or the difference between transverse and longitudinal vibrations on a metal rod. Oscilloscope, which is available on the tablet, typically uses two different inputs. The first is a USB input, which leads to some experimental device. Tablet can be connected in this way with a variety of sensors and inputs, such as a strain gauge, which may be of interest for example in the teaching of electricity and magnetism, but this should also be possible to connect the optical barrier. Of course you connect a conventional microphone. The second option, which we will deal in more detail, the use of a microphone that is integrated directly on the device. Integrated microphone has a number of advantages - no need to purchase additional equipment, carry them with you, you can comfortably work in the field and so on. On the other hand, it must reckon with the fact that the microphone is not the usual quality and some devices amplify the signal in the area, which is typical for phone calls, so between 100-550 Hz can lead to a certain bias. It is necessary for each device specially to investigate and either use them to measure where it does not matter, or vice versa for an experiment in which students of this fact alone shows, the entire dependency investigate and understand. |
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