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How to run the event?
Posted: November 11th, 2019, 10:41 am
by jinhusong
I have some questions about the details of running the event:
1. When to record the device reading and thermometer reading?
My plan is within the 2 minutes, students tell me that their reading is ready (stabilized), then I wait 15 seconds to record them, maybe a photo snapshot. Just try to avoid students picking the instant time that two readings match.
2. Is stirring allowed or recommended or required, for both thermometer and device? This should make difference for thermistor.
3. Any recommendation for water containers? The 75 degree C water is still quite hot, prefer heavy container not easy to spill.
Thanks,
Jinhu
Re: How to run the event?
Posted: November 13th, 2019, 7:33 am
by Tendan
jinhusong wrote: ↑November 11th, 2019, 10:41 am
I have some questions about the details of running the event:
1. When to record the device reading and thermometer reading?
My plan is within the 2 minutes, students tell me that their reading is ready (stabilized), then I wait 15 seconds to record them, maybe a photo snapshot. Just try to avoid students picking the instant time that two readings match.
2. Is stirring allowed or recommended or required, for both thermometer and device? This should make difference for thermistor.
3. Any recommendation for water containers? The 75 degree C water is still quite hot, prefer heavy container not easy to spill.
Thanks,
Jinhu
1. The supervisors at our first competition didn't show us the calibration thermometer's temperature until after the detector's reading was recorded. That way we couldn't pick and choose the best reading.
2. We stirred our water a bit, but I don't know if it's allowed or if the supervisors even noticed.
3. Something like a soup thermos should be fine.
Re: How to run the event?
Posted: November 13th, 2019, 9:41 am
by jinhusong
Thanks.
Jinhu
Re: How to run the event?
Posted: February 16th, 2020, 9:21 am
by lifeof3.141592
Can a student change their equation for different temperature ranges? (E.g changing equation from T = 4V + 3 to T = 5V + 8 if latter station has hotter/colder water)
Can they use their own thermometer to do so?
Re: How to run the event?
Posted: February 16th, 2020, 9:53 am
by bernard
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can a student change their equation for different temperature ranges? (E.g changing equation from T = 4V + 3 to T = 5V + 8 if latter station has hotter/colder water)
Yes.
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can they use their own thermometer to do so?
See 5.b.
Re: How to run the event?
Posted: February 16th, 2020, 10:39 am
by Umaroth
bernard wrote: ↑February 16th, 2020, 9:53 am
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can a student change their equation for different temperature ranges? (E.g changing equation from T = 4V + 3 to T = 5V + 8 if latter station has hotter/colder water)
Yes.
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can they use their own thermometer to do so?
See 5.b.
Also worth noting that this refers to during the calibration period and that the equation cannot be changed during the time after the calibration period when you are testing your device.
Re: How to run the event?
Posted: February 16th, 2020, 12:09 pm
by LIPX3
Thank you for taking the time to think this through - I've had many ES's who haven't so far this year.
If possible, avoid showing the teams the calibration temperature, for the reasons you stated. Then just record the temperature on the official score sheet.
I wouldn't stir the water yourself, but allow teams to do so.
In regards to the way to hold the water, I would recommend a thermos of some sort - that way the water doesn't cool too quickly. A large size isn't required - you could get decent ones from Goodwill.
Re: How to run the event?
Posted: February 17th, 2020, 8:10 am
by lifeof3.141592
Umaroth wrote: ↑February 16th, 2020, 10:39 am
bernard wrote: ↑February 16th, 2020, 9:53 am
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can a student change their equation for different temperature ranges? (E.g changing equation from T = 4V + 3 to T = 5V + 8 if latter station has hotter/colder water)
Yes.
lifeof3.141592 wrote: ↑February 16th, 2020, 9:21 am
Can they use their own thermometer to do so?
See 5.b.
Also worth noting that this refers to during the calibration period and that the equation cannot be changed during the time after the calibration period when you are testing your device.
can we dip our finger into the water during the actual testing if we can't look at the calibration thermometer
Re: How to run the event?
Posted: February 17th, 2020, 9:50 am
by LIPX3
lifeof3.141592 wrote: ↑February 17th, 2020, 8:10 am
Umaroth wrote: ↑February 16th, 2020, 10:39 am
Also worth noting that this refers to during the calibration period and that the equation cannot be changed during the time after the calibration period when you are testing your device.
can we dip our finger into the water during the actual testing if we can't look at the calibration thermometer
No - why would you be allowed to dip your finger into the water? It is potentially 75 °C - exposure to 80 °C water can burn you in less than a second (source
here).