Monolith149 Daily

Another place to see what KG is doing...

QAM

We noticed the other day how QAM (quadrature amplitude modulation) bit rates, e.g., in optical fibre, increase by 4x at each step: QAM16, QAM64, QAM256. The Wikipedia page makes why this is completely clear. In the digital version of QAM there’s an NxN matrix, a “constellation” of points when viewed as an amplitude and phase angle. Scroll down to “Quantized QAM” on the page to see the animated GIF on the right.

Quadrature amplitude modulation

Pluto’s Blue Sky

“Pluto’s haze layer shows its blue color in this picture taken by the New Horizons Ralph/Multispectral Visible Imaging Camera (MVIC). The high-altitude haze is thought to be similar in nature to that seen at Saturn’s moon Titan.” From Nasa.gov.

Event Horizon Telescope

“On April 5-14 2017, the team behind the Event Horizon Telescope hopes to test the fundamental theories of black-hole physics by attempting to take the first ever image of a black hole’s event horizon (the point at which theory predicts nothing can escape).” from Space.com.

APL Life

It’s certainly true that Conway’s Game of Life is one of those wonderful toys that’s brings joy when you take it out of the drawer every once in a while.

There was a post this morning based around a Youtube video of a full implementation of Life written in APL, as a single function of course.

Binary Candles

I don’t remember where I read this last week, but the idea if binary candles is brilliant. You can represent any age up to 127 with seven candles! If you understand binary, you already know what to do.

Pine 64

Another, small (some under $20) single board computer series.

Pine64

Scaling Git at Microsoft

“A couple of years ago, Microsoft made the decision to begin a multi-year investment in revitalizing our engineering system across the company.”