scienceolympiadist wrote:I've always wondered if you can perfect water as the timing device. I briefly tried it last year, and gave up to do other events when it failed. I wonder if I have the time and the mind to experiment with that again this year.
scienceolympiadist wrote:For pendulum...wouldn't the amplitude damper signifcantly over time?
scienceolympiadist wrote:Right, T = 2(pi) * (L/g)^(1/2). But eventually, the amplitude becomes so small that it's hard to discern an oscillation. Then, it just stops moving.
scienceolympiadist wrote:Really? I remember I tried something very simple: a string wrapped around a pencil, with a screw at the end of the string. The oscillations dampened after about 10 seconds.
RandomPerson52 wrote:Hmm, this event intrigues me, other than the pendulum mentioned, what have you guys seen used to keep track of time?
And in general, how hard did you find the written portion of the event?
wlsguy wrote:Our team used a sand timer that was exceptionally accurate. ( I know, they aren't normally very good. Ours was).
I think 85% of teams used a typical pendulum. Others used more exotic devices.
Paradox21 wrote:I think the 3 obvious types are pendulum clocks, sand clocks, and water clocks. Then I have seem some rather ridiculous ones like corn clocks and ramps with a ball bearing etc. If you are going to use any type of funnel -like clock (water sand) it is best to have as small a particle size as possible and ensure that it is as clean as possible. Not only does creating a mess potentially trigger a penalty, but it will massively reduce your accuracy and consistency.
I think that the tests vary quite a bit. At and below the state level the tests were painfully easy for me. I think our state test had about 8 questions. But the national test was very thourough and well-made.
What worries me is making something that's very accurate, how precise do these devices have to be, (like nearest second, nearest half second, nearest tenth)?
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