Scientists at the SETI Institute monitor an intriguing signal in 1997. While this transmission was first thought to be extraterrestrial, it was soon traced to telemetry from the SOHO solar research ...

The sound enters the microphone, where it is converted into a weak electrical signal. Amplifier The weak signal from the microphone is amplified. Notice how the incoming signal is flatter than the ...

The Signal messenger is getting a feature to transfer previous messages to paired devices. And there are already further plans for this.