3,623 reputation
723
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location Berkeley, CA
age 27
visits member for 3 years, 8 months
seen Jun 5 at 19:45

Jul
2
awarded  Curious
Nov
2
awarded  Yearling
Nov
2
awarded  Good Question
Jun
27
awarded  Self-Learner
Dec
23
awarded  Popular Question
Nov
2
awarded  Yearling
Aug
11
comment The ideal trampoline
Yes, the bottom end of the spring is fixed in place.
Aug
9
asked The ideal trampoline
Jul
16
awarded  Nice Answer
Jun
8
awarded  Caucus
Mar
9
awarded  Good Answer
Feb
6
accepted Phonons in non-crystalline media
Jan
27
revised Why do power lines sag when they are heated up?
deleted 91 characters in body
Jan
27
accepted Right Angle Circuitry
Nov
2
awarded  Yearling
Oct
15
comment Right Angle Circuitry
I don't understand. I'm already familiar with the magnetic vector potential field, denoted A. The A field is not mysterious.
Oct
5
comment Does the heat death of the universe really imply a maximum entropy state *all* of the time? Or most of the time?
en.wikipedia.org/wiki/Boltzmann_brain
Aug
20
comment Has every possible interaction between elementary particles been observed?
The core of the Sun is over 10 million K, not 5800 K. Check your facts.
Jul
25
comment How come an anti-reflective coating makes glass *more* transparent?
This is what I was going to say. There is a superposition principle for amplitude, but not for power. The power can have interference, which is the case here.
Jul
25
comment Solving one dimensional Schrodinger equation with finite difference method
Except that if you solve this with any softening of the singularity, such as $1/\sqrt{x^2+a^2}$. you'll get a no-node ground state, and the energy of that state goes to $-\infty$ as $a$ goes to zero. NGY wants the one-node state to be the ground state, but for any softening of the singularity there is a no-node ground state. Only for $a=0$ does that no-node state not exist.