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visits member for 2 years, 9 months
seen Jul 28 at 15:48

Just here to learn and share.


Apr
26
comment Can I get anions by touching the negative electrode of a battery?
Sorry OP. I just made it up. In fact this is how it feels after sitting through bio talks. Ron, you might enjoy this-->google.com/…
Apr
26
answered Can I get anions by touching the negative electrode of a battery?
Apr
24
comment Were the physical constants chosen randomly by the nature?
I was under the impression that we chose the constants depending on the units we choose.
Apr
14
answered What is “quantum locking”?
Apr
8
answered If a measured value is oscillating so fast between two numbers, what does the detector read?
Apr
8
comment How do I know an initial speed of a thrown object using the max height
Regardless of the syntax, the logic is very simple. Declare $g$ as a double precision constant, $h$ and $v_0$ as double precision arrays, implement a loop within which you read values of $h$, compute $v_0$ and push the computed value back into the array you declared for $v_0$.
Apr
6
answered How do I know an initial speed of a thrown object using the max height
Mar
19
comment Strategies against 50 Hz mains hum on detector signals?
Take a look at mini-circuits (minicircuits.com/homepage/homepage.html) and digikey (search.digikey.com/us/en/cat/filters/line-filters/…).
Mar
18
comment Does Quantum Mechanics assume space and time are continuous?
Modern field theory is based on the Poincare group, i.e., space and time are continuous. Why? No idea. +1
Mar
18
comment Is the quantization of the harmonic oscillator unique?
By deformation quantization, do you mean a different kind (parametrized?) of homomorphism?
Mar
16
comment What is a general definition of the spin of a particle?
You can think of spin as residual angular momentum in the rest frame.
Mar
11
comment Accuracy of atomic clocks
The theoretical limit would be the linewidth of the line being used (D1 or D2) of Rb or Cs. This is from Heisenberg's time energy uncertainty. The accepted value is 5.3Mhz for Cs (if I remember correctly).
Mar
10
comment Why does optical pumping of Rubidium require presence of magnetic field?
It would help if you explained how your experiment is setup? What kind of light source, detectors...there are many reasons why optical pumping is getting washed out. Pulsed light or CW light? How are you probing the system?
Mar
10
answered Why does optical pumping of Rubidium require presence of magnetic field?
Mar
9
comment Does no-cloning theorem implies a no-comparison theorem?
How exactly can you obtain a result of your operation without a measurement?
Mar
9
answered Accuracy of atomic clocks
Mar
9
answered Does no-cloning theorem implies a no-comparison theorem?
Mar
9
comment At what angle does a single atom “reflect” a single photon?
Just remember that energy, momentum and angular momentum have to be conserved and you will get a spatial probability distribution. Of course, you have to take into account the recoil velocity of the atom as well.
Mar
8
answered Why are there 4 Dimensions and 4 Fundamental Forces?
Feb
26
comment Turn-on delay time for Laser diode
The turn on delay or soft-start is by design and depends on the laser current controller. As far as I know, it has nothing to do with the diode laser itself. It is not so much as a delay as it is a slow ramping up of the current. This is done because transient currents can easily destroy an LD.