Learning Physics with Wolfram Alpha

We believe we are at the beginning of a new Big Bang. This great explosion places us at the dawn of a new era in learning Physics, and we would like to participate in this fascinating process. Mobile devices are exponentially growing amongst our students, so we are convinced that they must be used to promote active learning. In this work, we will focus on several apps from Wolfram Research Company: Wolfram Alpha, Wolfram Alpha Viewer, Physics I and Physics II. All of them have many possibilities to achieve an autonomous and active learning. These apps allow users to select different options from a specific menu, enter values of the required parameters and the app calculates by itself the magnitude involved in the process. In addition, these apps also allow us to study the major laws of Physics, to look for the different units of the International System of Units or even to manage the most common physical constants. We are convinced that there is a necessity of developing more applications for smartphones that will empower a meaningful learning of Physics using apps for the operating systems iOS, Android, Windows Phone and those that arise in the future. This opportunity, which is provided to us by the new technologies, cannot be unexploited. We must strongly engage into this topic to achieve a meaningful learning.AB thanks the “Generalitat Valenciana” of Spain (project PROMETEOII/2015/015) and the "Vicerrectorado de Tecnologías de la Información" of the University of Alicante, Spain (project GITE-09006-UA)

Field test of quantum key distribution in the Tokyo QKD Network

A novel secure communication network with quantum key distribution in a metropolitan area is reported. Different QKD schemes are integrated to demonstrate secure TV conferencing over a distance of 45km, stable long-term operation, and application to secure mobile phones.Comment: 21 pages, 19 figure