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visits member for 3 years, 1 month
seen Dec 2 at 19:17

Nov
25
asked Why are unilateral Laplace transforms suitable for causal systems and bilateral aren't?
Nov
25
revised What does $σ$ equal to zero mean?
The title was technically incorrect.
Nov
25
comment What does $σ$ equal to zero mean?
But FTs are mere sticks compared to the howitzers that LTs are. They obliterate the differentials for us to play with the remains. It just somehow makes me wish I could understand LTs a lot better than I do right now. (EDIT: not that FTs are any less important; on the contrary they are perhaps more widely used).
Nov
25
comment What does $σ$ equal to zero mean?
I don't think I have an intuition for Fourier transform either, but somehow it's much easier to keep in mind: Fourier transform finds and highlights the constituent frequencies of a time varying signal. And Fourier Transform is arrived at from Fourier series, which again is quite straight forward. I don't suppose I can truly understand these concepts — perhaps it is ludicrous for mortals to expect that they will arrive at Parseval's theorem intuitively. Even then, I rarely fumble around with FTs and FSsand hence I am fine with my limited perspective.
Nov
25
asked What does $σ$ equal to zero mean?
Oct
7
accepted Is redshift the only way by which we can tell that space is expanding?
Aug
31
revised How to model an apartment's airconditioning?
Made the question more specific
Aug
31
comment How to model an apartment's airconditioning?
Thanks for the answer, I upvoted it. But it's still not what I am looking for. I am looking for a more mathematical model (with elements like the heat exchange (i.e. the ac), the heat sink (i.e. the apartment) and the environment). A general model which can be used for a first-order approximation.
Aug
31
asked How to model an apartment's airconditioning?
Aug
13
awarded  Popular Question
Jul
2
awarded  Curious
Jun
26
accepted Will a prism widen a monochromatic beam?
Jun
26
comment Will a prism widen a monochromatic beam?
Could you provide a reference for the use of oscillating mirror to create a sheet of laser? I have up-voted both the answers but yours seems more complete.
Jun
25
awarded  Yearling
Jun
25
asked Will a prism widen a monochromatic beam?
Apr
1
comment Is redshift the only way by which we can tell that space is expanding?
When you say that the ruler is not expanding, is not expanding at all or is it expanding so slowly that it can't be measured? That's the primary import of my question.
Apr
1
asked Is redshift the only way by which we can tell that space is expanding?
Apr
1
comment What is the mass of the universe?
I added the last line and accepted the answer. Yeah, I guess I misread the source, but still it is very difficult to find a link which says that the mass of the universe is infinite. The word "Big Bang" in itself gives rise to so many misconceptions, that I think a simple statement saying that the mass of the universe (not the observable universe but the whole thing) is infinite, will help erase some of those misconceptions.
Apr
1
accepted What is the mass of the universe?
Apr
1
suggested rejected edit on What is the mass of the universe?