Viewing profile — quarterwave

This is in fact a profound question. The physics of electricity propagation in a powerline circuit is fundamentally the same as the propagation of FM radio waves, or even the beam …

Erlang = Owls (message passing)

Crystalline III-V channels can be grown epitaxially on silicon substrates, with buffer layers to grade the strain due to crystal lattice mismatch. With silicon wafers heading to 45…

I am reading this book 'The Dollar Trap: How the US dollar tightened its grip on global finance' [1], where economist Eswar Prasad explains how money flows into the US from around …

Thanks, good point about telcos.

Interesting work! At first glance it would seem that Erlang or Akka provide a proven infrastructure for building such a multi-agent system+. Yet, a key construct is the notion of t…

I have home back-up power based on an inverter charging a lead-acid battery (located in a sheltered area outside the home), which costs about $100/kWh. Usage is about 1-2 hours dis…

This is an excellent 'road map' to the two key theorems of information theory. The focus on decoding complexity in the noisy coding theorem is particularly welcome. A separate arti…

Thanks for this reference.

Thanks for the detailed perspective. My limited & roseate view of a 21st century Lisp machine is based on an old theme - a massively parallel computing system using bespoke silicon…

Any chance of a resurgence in Lisp machines? Especially in view of the changes in CPU architecture due to semiconductor scaling challenges.

i used to be a college teacher for several years & my sympathies are with the author. Advice for those considering this path in science/tech - learn to write code on the side. Pick…

That's correct, thanks for pointing it out.

Is there an Erlang shell to evaluate expressions? There seems to be a sub-window to the right of the module editor, but I'm unable to place the cursor there. Tried in both Firefox …

While the Jeeves stories are good, they can't hold a candle to the time when lawlessness raised its head at Blandings Castle, or to the effect of Mulliner's Buck-u-Uppo tonic on th…

Thanks for pointing this out. The role of muon instead of proton could be: (i) to make the bond detectable as the muon decays, or (ii) 10X lighter mass of muonium compared to regul…

Thanks for both explanations.

Why is the muonic hydrogen required? From the Bohr formula the Rydberg energy of the muonic hydrogen would be some 200 times larger than regular hydrogen. Anyone know how that play…

The DSL reminds me of Fenics http://fenicsproject.org/

Thanks for the clear reply. I also read your paper. Immutable should be adequate for avoiding the serialization tax in hybrid applications that need 'symmetry breaking' of location…

Can Orleans grains within a single thread share state without message passing via the interface?

Processor clock frequency scaling is limited by two factors: (i) logic signal delays, and (ii) processor power dissipation (heat). In broad brush strokes, a processor core needs to…

Feynman-II has a nice chapter describing the idea of curved spaces: http://www.feynmanlectures.caltech.edu/II_42.html The chapters on electromagnetism and special relativity are ou…

Would the symmetry groups (point groups?) be different for 3D?

The impedance of free space is (unfortunately) a few hundred ohms. On top of this, the minimum signal voltage of analog integrated circuits is set by unsystematic (random) offsets,…