Older than Apple, Younger than the Stars The Antikythera mechanism is an ancient mechanical analog computer (as opposed to digital computer) designed to calculate astronomical positions.It was discovered in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, and has been dated to about 150-100 ...

The way students attempt to pass their exams is in most cases wrong. Cramming information and leaving no place for improvisation and creativeness leads to nothing. It is no longer possible to state that exams are passed by means of solely one day of preparations. There might be such lucky students. However, there are only few of them who once found the bean in the cake. By contrast, there is a set of applicable instructions appropriate for passing an exam with no sufficient probl...

                                                            This article details the construction and building of a stand alone trainable speech recognition circuit that may be interfaced to control just...

Radiation in cell phones is generated in the transmitter and emitted through the antenna. ***When talking on a cell phone, a transmitter takes the sound of your voice and encodes it onto a continuous sine wave. A sine wave is just a type of continuously varying wave that radiates out from the antenna and fluctuates evenly through space. Sine waves are measured in terms of frequency, which is the number of times a wave oscillates up and down per second. Once the encoded sound has...