2,922 reputation
826
bio website none
location Germany
age 32
visits member for 2 years, 3 months
seen Sep 16 at 12:28

I am a professional space engineer, with the heart of a physicist.

I am also a Linux loving, academic, pragmatic, hopelessly idealistic, anti-bureaucratic baboon, and proud father of two little baboons (although they could be chimps, it's too early to tell).

If you think I did something awesome, consider buying me a coffee:


Sep
30
awarded  Explainer
Jul
10
awarded  Yearling
Jul
2
awarded  Curious
Jun
19
comment Handling halogen lamps
So you're saying that it doesn't reduce the lifetime of the bulb, just reduce the net light output? And not by much too, because normally you'd only handle the bulb only once, to put it in...
May
7
awarded  Enlightened
May
7
awarded  Nice Answer
May
7
revised What is the period of a physical pendulum without using small-angle approximation?
added 119 characters in body
May
7
comment What is the period of a physical pendulum without using small-angle approximation?
@StevenLu: Ah no, it's correct. I modeled the "friction" as being a spring constant of the string, which therefore depends on angle only (not speed). The net effect of that is the same as an increase in the gravitational force; no energy is lost, so it doesn't model friction at all; let me correct that.
May
7
revised What is the period of a physical pendulum without using small-angle approximation?
deleted 1 character in body
May
7
comment Will high power laser penetrate mirror?
@kleineg: sounds about right, somewhere there is some "worst" trade-off between intensity, frequency and energy usage. You'd have to take care not to increase the frequency too much, because many materials would become transparent to it (think X-ray). Point is, the most destructive combination of these parameters is really very material-specific; I suspect all-round laser weapons therefore use the true army style brute-force approach of just using ridiculously high intensities at a frequency that's most effective for the most common metals used on aircraft/ships...but I'm no expert :)
May
7
comment What is the period of a physical pendulum without using small-angle approximation?
@StevenLu: Hmmm come to think of it, are right; the period should decrease over time...I'll re-do the analysis if I have time later today :)
Mar
13
comment Is it possible to find a “replacement pendulum” for a system of two equal but perpendicular pendulums?
By 3D pendulum you mean a spherical pendulum?
Jan
10
awarded  Custodian
Jan
9
revised Finding the Schwarzchild radius of a star of solar mass 30
added 125 characters in body
Jan
7
comment Moments of inertia
OK, so what have you tried?
Jan
7
revised Does corrosion of iron increase its mass?
added 1 characters in body; edited title
Jan
7
revised Why are turns banked?
added 10 characters in body
Jan
7
revised Why are turns banked?
added 544 characters in body
Jan
7
answered Why are turns banked?
Jan
7
comment Is everyone seeing the same color as I see?
Hmmm...not sure about that last statement. People's favorite colors are (at least in part) determined by past experiences and the positive/negative associations with particular colors. I think it is not sufficient to be able to say that the experiences of color are different, just because their favorites are different.