Not the easiest DIY project but this homemade Homemade Oscilloscope looks and works great. “Homemade Cathode Ray Tube with cold cathode. Vacuum is somewhere between 100 – 200 microns, easily attainable with amateur equipment. Vertical deflection is done using an electrostatic plate. This CRT is used as an oscilloscope to display a signal from a sound synthesizer. “
Everyone is aware that we need to shred our confidential information right? Well it looks like software can now restore shredded documents. “A research team in Germany has developed a computer-software system to piece together some 45 million pages of secret police files ripped into 600 million pieces. The pieces of torn documents are scanned on both sides, and the digital images are then analysed by a cluster of 16
