Ruslan

St. Petersburg, Russia

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How is a quantum superposition different from a mixed state?

quantum-mechanics quantum-information hilbert-space superposition density-operator asked Oct 11, 2013 at 22:18

physics.stackexchange.com

47 votes

Why are first four x86 General Purpose Registers named in such unintuitive order?

assembly instruction-set 8086 asked Dec 1, 2017 at 14:39

retrocomputing.stackexchange.com

41 votes

How is Gosper's approximation to factorial derived?

approximation factorial asked Mar 27, 2017 at 11:05

math.stackexchange.com

36 votes

Is comparison of const_iterator with iterator well-defined?

c++ iterator comparison-operators const-iterator asked Feb 14, 2016 at 10:43

stackoverflow.com

35 votes

Is it legal to use previous function parameter to declare new one?

c++ function gcc language-lawyer asked Mar 1, 2016 at 13:37

stackoverflow.com

34 votes

Is MathieuC for moderately large imaginary arguments broken?

bugs numerics special-functions precision-and-accuracy asked May 9, 2015 at 17:06

mathematica.stackexchange.com

32 votes

Why does Snape suggest Malfoy use Serpensortia spell?

harry-potter parseltongue asked Feb 1, 2018 at 16:34

scifi.stackexchange.com

30 votes

How to improve performance of BesselJ to the level of GSL?

performance-tuning numerics special-functions asked Jun 2, 2015 at 10:40

mathematica.stackexchange.com

28 votes

Why does PAUSE key have a long make code and no break code?

keyboards asked Sep 6, 2019 at 22:21

retrocomputing.stackexchange.com

25 votes

What do individual rainbow-forming droplets look like?

refraction geometric-optics asked May 27, 2018 at 21:52

physics.stackexchange.com

Top Answers

116

Stopping at the first machine code instruction in GDB

stackoverflow.com

103

Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

stackoverflow.com

102

Why does the humidifier make a stove's flame orange?

physics.stackexchange.com

LibreOffice doesn't have an icon

apple.stackexchange.com

СССР Parts Identification

electronics.stackexchange.com

Why is the sky *uniformly* blue?

physics.stackexchange.com

Is my OS 32-bit or 64-bit?

codegolf.stackexchange.com

What does the "true" visible light spectrum look like?

physics.stackexchange.com

What keyboard shortcuts take me to the desktop if I have no Windows key?

superuser.com

What is a standing wave?

physics.stackexchange.com

Debunking Stroustrup's debunking of the myth “C++ is for large, complicated, programs only”

codegolf.stackexchange.com

When will a wave function collapse if the observer was only a camera and the video was watched later in time?

physics.stackexchange.com

What wavelengths of light does a banana reflect?

physics.stackexchange.com

Eigenfunctions of the Runge-Lenz vector

physics.stackexchange.com

What do individual rainbow-forming droplets look like?

physics.stackexchange.com

How is Alpha Radiation possible?

physics.stackexchange.com

Given two vectors (with no common point), is a dot product between them possible?

physics.stackexchange.com

How to improve performance of BesselJ to the level of GSL?

mathematica.stackexchange.com

Feynman couldn't explain how the photon becomes instantaneously aware of the glass thickness. Do we have a better understanding now?

physics.stackexchange.com

Can a quasiclassical electron wave packet in elliptic orbit be formed from bound hydrogen-like eigenstates?

physics.stackexchange.com

How is Gosper's approximation to factorial derived?

math.stackexchange.com

Is everything a resistor?

physics.stackexchange.com

Why are certain PDE called "elliptic", "hyperbolic", or "parabolic"?

math.stackexchange.com

Will table sugar twist polarized light?

physics.stackexchange.com

What it the outer part of the sun, that we see with our eyes, called?

astronomy.stackexchange.com

Why does long long n = 2000*2000*2000*2000; overflow?

stackoverflow.com

How do I say "1/1000"?

ell.stackexchange.com

Why must traveling waves have the same amplitude to form a standing wave?

physics.stackexchange.com

What exact color does ozone gas have?

chemistry.stackexchange.com

Why are the units of angular acceleration the same as that of angular velocity squared?

physics.stackexchange.com