In the present experiment, we heat an object and observe how it cools with time and what factors aect the cooling rate. In one part, we allow the object to be cooled with the help of forced air currents and in the other, the air currents are switched o. We will also learn how to use the thermocouple, an important component of numerous industrially important processes. We will also observe that heating an object does not instantaneously raise its temperature, rather it changes only gradually.
|Sample Results||Data acquired from Physlogger and its interpretationForced and natural convection graphs|
|Version||April 8, 2019 - Version 2019-5|
Further Readings and References
- Heating water: rate correction due to Newton’s cooling The Physics Teacher , J. O. Connell , 37 551 , (1999).
- Introducing specific heat through cooling curves The Physics Teacher , C.R. Mattos, A. Gasper , 40 415 , (2002).
- Do darker objects really cool faster? American Journal of Physics , R.A. Bartels , 58 244 , (1990).