2,623 reputation
1225
bio website nl.linkedin.com/in/…
location Canada
age 33
visits member for 4 years, 1 month
seen Dec 16 at 4:11

Dec
1
comment Why does my watch act like a mirror under water?
@Frédéric, @Jerry: if the total reflection happens at the glass-air surface, then you don't even need to be underwater to see the effect. I wanted to try some experiments, but I didn't have a watch handy. I'll see if I can find one this evening.
Dec
1
comment Why does my watch act like a mirror under water?
@Jerry: I thought of etalon effects, but as you say, there wouldn't be one critical angle, but several maxima.
Dec
1
comment Why does my watch act like a mirror under water?
Good guess, but you've got your $n$'s mixed up. There is no water-air surface here, because there's glass or plastic (the watchplate) in between the water and the air! The index of plastics and glasses is usually higher than water, so unless this watchplate happens to have $n\approx 1.2$, then there must be something else going on.
Dec
1
awarded  Enthusiast
Dec
1
comment How can you focus sound?
That's actually diffraction, not focusing.
Nov
30
comment If time standard clocks and any memories about the time standard are destroyed, can we recover the time standard again?
Uh, what's TAI?
Nov
24
comment How can you focus sound?
As with sound, but I wanted to keep the answer simple ;-)
Nov
24
answered How can you focus sound?
Nov
23
comment How to get the cosine of a waveform?
Do you mean you have a Fourier spectrum of the waveform?
Nov
20
revised How to determine phase angle for a sinusoidal motion?
corrected remark about amplitude
Nov
20
answered How to determine phase angle for a sinusoidal motion?
Nov
18
comment How “How to See Without Your Glasses” works?
Your answer is correct, but I think there's a more intuitive way to explain it.
Nov
18
answered How “How to See Without Your Glasses” works?
Nov
16
comment How can we describe the polarization (of light) coming from an arbitrary angle?
Actually, "p" and "s" are defined with respect to a surface of reflection. As I said, I always mix them up, but as far as I remember, "s" is polarized in the plane of the surface of reflection, and "p" is polarized in the plane defined between the incoming and outgoing beams. So, "s" and "p" are still defined when you reflect a beam upwards.
Nov
16
comment Amount of 2 amperage
@endolith, Because "amperage" has the stereotype clinging to it that it's only used by people who don't know what current or amperes are. Please note I'm not saying that stereotype is necessarily true.
Nov
15
answered Meaning and application of convolution or deconvolution in physical sciences
Nov
15
comment Notation of plane waves
Thanks both of you for your answers, I'm arbitrarily accepting this one because I like "stationary field" best.
Nov
15
accepted Notation of plane waves
Nov
13
revised Is it possible to make glasses that make everything brighter, but do not magnify or focus?
expanded answer greatly
Nov
13
comment Is it possible to make glasses that make everything brighter, but do not magnify or focus?
I'm skeptical of this solution being able to increase the brightness without distorting the image. Can you elaborate?