The differences in characteristics among parts or the fluctuations of the inductance value of a coil due to temperature variation is lessened by reducing the stray capacitance components induced among the layers of wound conductor, and size reduction and cost reduction are achieved. The rotor is attached to the bob axle so that rotation of the bob axle and the rotor presents a measurable deviation of the electrical field received by the electrical field receiver. The parameter may be dynamically determined, by a firewall or a hypervisor for example, and the placeholder may be replaced with the dynamically determined parameter. The earbud holder has a front panel and a back panel wherein the front panel moves with respect to the back panel and wherein magnets secure the earbud holder in the closed First Position A. In addition, the responses are displayed in the same web page using partial page refresh type techniques such that the web page continues to be displayed with a same Uniform Resource Locator in duration said user interacts with said web page and also when the responses are displayed.