168 reputation
5
bio website gener8.be
location Belgium
age
visits member for 11 months
seen Aug 5 '13 at 10:06

I'm a freelance software engineer, living and working in Belgium (Antwerp-Brussels area). My expertise is in C++, and in Tcl scripting. I have experience in many other technologies, and consider myself a generalist rather than a specialist. Besides programming, I am also interested in science, music, writing, and playing with my kids.


May
27
comment How can particles travel in a straight line?
Thanks, Dan, this is a very clear answer. So am I correct in understanding that the photons coming from a distant star have only a tiny variation in their velocity, so that they can be considered "linear" for practical purposes?
May
27
awarded  Editor
May
27
revised How can particles travel in a straight line?
Spelling fix
May
24
asked What is the wave length of the entire universe?
May
24
asked How can particles travel in a straight line?
May
21
awarded  Scholar
May
21
accepted What causes the permittivity and permeability of vacuum?
May
21
comment What causes the permittivity and permeability of vacuum?
OK Thanks for the explanation. This is actually the answer I was looking for.
May
18
comment What causes the permittivity and permeability of vacuum?
OK, but I wasn't asking about the reason for the exact values, only for the reason why they're finite. If the vacuum is really empty, nothing would prevent it from permitting an infinite amount of electricity or magnetism to pass through. The limited speed of light in a material is caused by atoms that "block" the waves, at least temporarily. So what causes the waves to be "blocked" in empty space?
May
18
comment What causes the permittivity and permeability of vacuum?
This is actually a very nice visual explanation for why the wave has a finite propagation speed, even in vacuum. The fields simply cannot "bend back" any faster, so they cannot cause the wave to go faster either. How physically accurate this explanation is, is not clear to me yet. But thanks for the image and the clear relation between the wave and the oscillating field that causes it.
May
18
awarded  Critic
May
16
awarded  Student
May
16
asked What causes the permittivity and permeability of vacuum?
May
9
awarded  Supporter