exhibit heliostat: tracks the sun and focuses it’s light onto target. sun ir camera screen shows...
Post on 13-Jan-2016
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Exhibit
Heliostat: Tracks the Sun and focuses it’s light onto target.
Sun
IR Camera
Screen shows IR Image
Exhibit (TBD)
We would like to use the IR Camera with the Heliostat to show that sunlight can produce heat.
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Goals of Evaluation
Do visitors understand the image produced by the IR camera?
(colors correspond to temperatures)
Can visitors use it to understand that light
produces heat?
YES
YES
Use IR Camera in Exhibit
YES
Easily convey color/temperaturecorrespondence?
NO
Don’t Use IR Camera in Exhibit
NO NO
Set Up
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Survey
1. Direct visitors to the two bowls of water and ask: “Can you tell me the difference between these two bowls of water just by looking at the screen”
1a. “What do the colors mean?”
(If incorrect, ask them to feel the water and repeat 1a)
2. Direct visitors to the lamp and ask: “If I shine the lamp on the tabletop, what will the screen show?”
2a.”Why?” “Where is the heat coming from?”
3. After letting them play with the two demos (water and light), ask what they liked best and if they have any suggestions for improvement.
N=39(with groups >100)
54% Female 46% Male
Evaluation Demographics
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Done Saturday morning (11/17) in front of the IR camera
Results
Do people understand the image produced by the IR camera?
(colors correspond to temperatures)
Can visitors use it to understand that light
produces heat?
Easily convey color/temperature correspondence?
YES = 95%
NO = 5 %
Use IR Camera in Exhibit
YES = 87%
Don’t Use IR Camera in Exhibit
NO = 13%
YES=51%NO = 49% After Prompt =55%Before Prompt =45%
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Paint with Light Vs. Play with Water
Paint on Clothes or Easel
Wanted more concentrated ‘brush’
Suggested Hair Dryer, Comparing Bulbs, Friction.
16% 23%
Both61%
Make hand disappear.
Wanted Ice, To Mix Hot and Cold
Give highlights, moustache etc.
Using the IR Camera to…
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Conclusions49% of visitors will understand what they see on the IR Camera without a demonstration or labels.
95% of visitors left understanding the connection between Heat and IR Color
87% of visitors left understanding the connection between LIGHT, Heat and IR Color (Problem: IR Camera scale changes)
Universal (100%) positive response for ‘Hands On’ Interaction
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