Archive for August 2016

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Fixed Wing Drone by Parrot

The Parrot “Disco” is a fixed wing drone with a fish-eye lens camera, a range of nearly 2 kilometers, and flying time of over 45 minutes. It costs $1,300, flies at up to 80 kph (50 mph), and has automated take off and landing modes. There is a joystick operated control panel that integrates with […]

Mapping Clusters of Galaxies

A new technique of mapping clusters of galaxies using the direction in which they are moving, creates a new look at superclusters of galaxies. Galaxies clump together into clusters and clusters of galaxies clump together into supergalaxies. The name given to our supercluster is Laniakea, which is Hawaiian for “immeasurable heaven”. Laniakea: Our home supercluster […]

How Real Hacking Works

Hacking computers is a mysterious and dangerous world that most of us don’t really understand. This video shows some hackers at DEFCON demonstrating their techniques on a reporter who volunteered to be hacked. The video shows some basic “social engineering” which may use technical knowledge and experience, but involves classic “confidence” manipulation to gain credentials […]

Vortex Wind Generator Wiggles

Vortex bladeless wind generators respond to air movement by vibrating and oscillating as eddy currents curl around them. The motion created in the masts can be harnessed to produce electricity, using a linear alternator. This greatly reduces the cost of energy capture. Vortex Bladeless Wind Generator. – [] Vortex Bladeless: a wind generator without blades […]

1913 – Erdos – bio

Paul Erdos was born in 1913 in Hungary and was a mathematician. He had an eccentric personality and was one of the most prolific mathematicians in history, either writing or collaborating on 1,475 papers. He did work in number theory, set theory, and probability theory, and is credited with founding the field of discrete mathematics. […]