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Re: It's About Time C
Posted: March 9th, 2015, 1:21 pm
by bernard
blaub1196 wrote:Just out of curiosity, what is everyone's devices like and how accurate have you gotten them.
I'm not sure how our team's times are, but we're using a pendulum and I've heard its quite accurate. A number of other teams also use pendulums and have won the event at a number of tournaments.
Re: It's About Time C
Posted: March 10th, 2015, 2:35 pm
by boomvroomshroom
bernard wrote:blaub1196 wrote:Just out of curiosity, what is everyone's devices like and how accurate have you gotten them.
I'm not sure how our team's times are, but we're using a pendulum and I've heard its quite accurate. A number of other teams also use pendulums and have won the event at a number of tournaments.
What would you use besides a pendulum? Has anyone tried making a spring or whatever yet?
Re: It's About Time C
Posted: March 10th, 2015, 3:37 pm
by bernard
boomvroomshroom wrote:bernard wrote:blaub1196 wrote:Just out of curiosity, what is everyone's devices like and how accurate have you gotten them.
I'm not sure how our team's times are, but we're using a pendulum and I've heard its quite accurate. A number of other teams also use pendulums and have won the event at a number of tournaments.
What would you use besides a pendulum? Has anyone tried making a spring or whatever yet?
Our team considered making a spring clock but the damping is is too much for timing 5 minutes. Can I ask why you want to try something other than a pendulum?
Re: It's About Time C
Posted: March 10th, 2015, 5:03 pm
by finagle29
Spring clocks have the advantage that measuring fractions of a period is extremely easy if you have two metersticks behind the oscillating mass with the zero ends at the equilibrium point.
Re: It's About Time C
Posted: March 10th, 2015, 5:06 pm
by bernard
finagle29 wrote:Spring clocks have the advantage that measuring fractions of a period is extremely easy if you have two metersticks behind the oscillating mass with the zero ends at the equilibrium point.
Wouldn't the damping give it a similar effect as a pendulum oscillating in front of large grid showing degree markings like a protractor?
Re: It's About Time C
Posted: March 12th, 2015, 6:40 pm
by elephantower
bernard wrote:finagle29 wrote:Spring clocks have the advantage that measuring fractions of a period is extremely easy if you have two metersticks behind the oscillating mass with the zero ends at the equilibrium point.
Wouldn't the damping give it a similar effect as a pendulum oscillating in front of large grid showing degree markings like a protractor?
i.e. aren't both unworkable? The only way to measure fractional period I've heard is to use an escapement so you have a constant amplitude (you still have to have killer reflexes).
Re: It's About Time C
Posted: March 12th, 2015, 8:16 pm
by mogrady
This Saturday I am heading into Regionals. This whole week has consisted of compiling my binder full of info. Anyone want to share what they put in theirs? Also, links to useful sites would be appreciated
Re: It's About Time C
Posted: March 12th, 2015, 8:57 pm
by elephantower
Sure
Here's my notes page for IAT
https://docs.google.com/document/d/1XmN ... hI-4y8/pub
Pretty bad imo but it won us first (along with our clock of course)
Re: It's About Time C
Posted: March 14th, 2015, 6:03 pm
by mogrady
Hey thanks alot man. This was really useful.
Re: It's About Time C
Posted: April 3rd, 2015, 9:10 am
by jkang
elephantower wrote:
i.e. aren't both unworkable? The only way to measure fractional period I've heard is to use an escapement so you have a constant amplitude (you still have to have killer reflexes).
My partner and I don't use an escapement on our device, and we can still get fractional swings close enough to get near perfect scores on our device.