Thermodynamics/Expert Profile

Average Ratings

• Knowledgeability 9.87
• Clarity of Response 9.70
• Politeness 9.80
• Response Time(hr) 6.2
• Response Time(hr, last 90 days) 6.4

• Number of Questions Today 0
• Max Questions to be Asked in a Day 5
• Total Questions (since joining AllExperts) 1207
• Volunteer Since 2004-09-12
• Prestige Points 24648

Recent Reviews from Users

Read More Comments

Recent Answers from Richard J. Raridon

2011-12-08 Entalphy:

I'm trying to convince you that you can only measure differences in both enthalpy and potential energy.  In the equation PE = mgh, PE changes as a function of h.  If you have an object setting on the floor

2011-12-07 Entalphy:

Total enthalpy of a system cannot be measured.  Only differences in enthalpy can be measured.  Therefore, you have to have some starting point and that is defined as zero for elements.  It's like electrical

2011-11-12 Energy:

1) Everything above absolute zero has heat energy that shows up as the movement of the atoms in the material  2) Kinetic energy is the energy of motion and potential energy is the energy of position  3

2011-10-13 Calorimetry:

As you should know, water has the highest specific heat of any material.  Since calorimeters are made out of aluminum or something similar, they can easily change temperature quickly.  I would check their

2011-09-22 Thermodynamics:

Yes, stirring might add a minute amount of heat but the coffee loses most of its heat through the sides of the cup.  By stirring, you move some of the coffee from the center towards the sides.    It's