robryk @robryk@qoto.org

@anon_opin That implies that in many places smoke detector manufacturing should be nationalised.

@lynne Lots of "white" LEDs use a blue LED to excite some sort of phosphor that then generates a somewhat wide band of lower frequency light.

@munin

Why do you find it fascinating? Because of the difference in opinions of veterans and actions of active duty people or something else?

@eoaiuastwg For some form factors, people who want to have a media center/NAS/... + AP.

@eoaiuastwg

There's a good reason why some phones don't: there are some GSM (2G iirc) radios that rely on a battery to even out some pretty high spikes in current draw when transmitting.

This exact reason probably doesn't apply to laptops, but I wouldn't be surprised if some similar reason did. Obviously one could always add a sufficiently beefy capacitor, but that costs \shruggie{}.

@fafo What's the deal with the delay(?)? Is the location unchanged?

@kuba A z czego to jest? (Pomalowany metal? Jeśli tak, to jaki metal? (Łatwo ~rozpoznać ołów -- upiornie ciężki, stal -- ferromagnetyczna, aluminium -- lekkie i matowieje po podrapaniu)).

An amusing way to explain that garbage input produces garbage output.

I am going to CCC (#39c3). If everything works, I will be reachable by phone at 7275.

@_thegeoff @varx

Isn't that caused by your pupil being not a point?

@_thegeoff @ghalfacree do you know of the single transitor negative voltage generator?

@tomjennings @timoj I think you might enjoy reading Going Postal by Terry Pratchett.

@_thegeoff @Ryanteck

Even old scopes connect their ground to PE (I once melted insulation on a breadboard jumper by connecting scope ground to +5V from a lab PSU that also grounds negative side of its output.)

If you perform the following procedure:
1. Draw A from Poisson with mean x.
2. Sum up A i.i.d. +1/-1 Bernoulli variables with mean y.

You'll get a Gaussian random variable, with -- expectedly -- mean of x*y, but somewhat surprisingly with variance x.

It's somewhat nice (and surprising for me) that the variance is independent of the Bernoulli distribution skew.

@_thegeoff

If anything they do involves looking at derivatives and/or Taylor series of trig functions, using anything other than radians is going to be a pain.

Perhaps showing some situations where using e^i\phi{} instead of individual trig functions would help? Maybe how easy it is to do things with electrical impedance if you just treat it as a complex number and behave as if everything was just a resistor?

@whitequark

You can have a closed loop that exchanges heat with an open loop. This PR video doesn't explicitly say that, but shows the evaporation setup: https://youtu.be/th6jVeaMyxo?t=90 (it also mentions using sea as a heatsink when available).

@lauren

Do checks aid surveillance less than other non-cash payment systems? I would expect that a check specifies the payer and the payee, is seen in full by at least the payee's bank, and is probably stored for nontrivial amount of time by that bank.