The turning point, however, came in 1997 when the Institute of Electrical and Electronics Engineers (IEEE) approved the 802.11 Standard, the basis of what is now known as WiFi.
Although the main use of spectrum is for communication purposes, there are also other uses such as cooking food in microwave ovens, medical applications, garage door openers and so on.
Besides issues of national sovereignty defence, very strong economic and political interests play a determinant role in the management of spectrum, largely due to the rapidly increasing economic value of spectrum.
Our understanding of spectrum has changed a great deal since Marconi first spanned the Atlantic with his “wireless telegraph message”. In 1902, he used the whole spectrum available at the time to send a few bits per second over thousands of square kilometres.
The spark transmitter used for Marconi’s telegraph occupied all electromagnetic frequencies available to existing receivers.
There is no simple definition of spectrum. From a technical viewpoint, spectrum is the range of electromagnetic waves that can be used to transmit information.
The first winner of the Connect Your Rights: Make the Connection contest is Charlie Parra del Riego for his hilarious SOPA Guitar Solo. To learn how you can submit your own content, check out our call for submissions.
Campaña de prueba completa (solo lo ve Staff role)
Esta es la descripción de la campaña. Como minimo debe tener 50 caracteres para ser aceptada. La imagen no se carga directamente en el cuerpo como se hace con otros nodos, en vez de eso, hay un campo “Image:” especifico para subir una imagen.
El texto que sigue es para rellenar…
APC responds to Vint Cerf’s recent column, “Access to the Internet is Not a Human Right”, with an open letter supporting his challenge to the technical community and engineers to put human rights to the forefront of internet design.
The new edition of Global Information Society Watch 2011 focuses on internet rights and democracy. It features stories from almost 60 countries including on internet in prisons in Argentina and the role of social media during the Arab uprisings. GISW 2011 is out in December but you can read some chapters now online.