Rody Oldenhuis
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 Nov 27 awarded Necromancer Jul 10 awarded Yearling Apr 29 awarded Nice Answer Nov 13 awarded Popular Question 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 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