According to sources familiar with the experiment, the 60 nanoseconds discrepancy appears to come from a bad connection between a fiber optic cable that connects to the GPS receiver used to correct the timing of the neutrinos’ flight and an
Manufacturing and devices
The answer is obvious but few people stop for a second to wonder about this. After all, it is not like Apple has control over all aluminum in the world. Apple were just the first to see the potential of
Julia programming language and hadoop
While we’re being demanding, we want something that provides the distributed power of Hadoop — without the kilobytes of boilerplate Java and XML; without being forced to sift through gigabytes of log files on hundreds of machines to find our
The UNIX file system as a recursive function
Ignoring “write” operations, for the moment, a file system is just an implementation, a concrete manifestation, of a map from file names to file contents. A UNIX style file system complicates the story because file names are “paths” through a
Apple’s A5 chip made in Austin
Although I think it might have been designed here too. The A5 processor – the brain in the iPhone 4S and iPad 2 – is now made in a sprawling 1.6 million square feet factory in Austin owned by Korean
Richard Stallman speaks
A supply of tea with milk and sugar would be nice. If it is tea I really like, I like it without milk and sugar. With milk and sugar, any kind of tea is fine. I always bring tea bags
Dennis Ritchie
Truly a brilliant engineer. http://en.wikipedia.org/wiki/Dennis_Ritchie
Droning on about computer security
Good grief. The US military’s unmanned Predator and Reaper drones are continuing to fly remote missions overseas despite a computer virus that has infected their US-based cockpits. Government officials are still investigating whether the virus is benign, and how it
The multics file system
The design proposed in this paper is ubiquitous. A file is simply an ordered sequence of elements, where an element could be a machine word, a character, or a bit, depending upon the implementation. A user may create, modify or
Fukushima Robot Blog
This from the IEEE is really fascinating. It is the blog of a robot operator in the Fukushima nuclear plants. Some interesting things about controls, robot handling, and durability are discussed. And, big surprise, the competence of the organization that