Water temp over time

The schoolchild made this project. Author wants to see the water temperature based on time.
Author started to wonder about the effect of the ambient temperature and how long it takes the water to reach equilibrium.

Parts

• DS18B20 – Waterproof temp sensor – Adafruit
• Food-grade heat shrink tubing –Adafruit
• Arduino Leonardo
• Arduino Ethernet Shield (for SD Card)
• Cardboard box
• SHT1x Temp\Humidity Sensor
• Tenergy 7.4v 5200mAh LiPo Battery – All-Battery

Result

Author started at 8:47pm and the battery lasted until about 6:15am.

What is interesting about the data is the humidity seems to have a direct relationship to the ambient temp of the refrigerator.

For more information, please refer to the following link:
http://www.mobilewill.us/2013/11/science-water-temp-over-time.html