Skill 6 of 14
In Progress

Heat & conservative forces

When rubbing your hands fast, they become… warm?

Heat has been generated![1] Let’s symbolise it $Q$.1

Slide a box over the floor, or make your motorbike wheel spin on the asphalt.

Subscribe to valuable engineering skills for your resume or CV

Try full access with a 7-day free trial on all subscriptions.


Already subscribing? Log in:


  1. Heat (Physics): Definition, Formula & Examples’ (web page), Gayle Towell, Sciencing, 2019, www.sciencing.com/heat-physics-definition-formula-examples-13722754.html (accessed Jun. 22nd, 2020)
  2. Ueber die bewegende Kraft der Wärme und die Gesetze, welche sich daraus für die Wärmelehre selbst ableiten lassen’ (book, in German), Rudolf Clausius, Pogendorff's Annalen, vol. 79, 1850, www.archive.org/stream/ueberdiebewegen00claugoog (accessed Jun. 24th, 2020), page 15
  3. Sears and Zemansky’s Univesity Physics with Modern Physics’ (book), Hugh D. Young & Roger A. Freedman, Pearson Education, 13th ed., 2012
  4. Conservative Force’ (web page), Byju's, 2019, www.byjus.com/physics/conservative-force (accessed Jun. 22nd, 2020)
  5. Conservative and Non-Conservative Forces’ (web page), Samuel J. Ling, Jeff Sanny, Bill Moebs and others, Physics LibreTexts, 2020, phys.libretexts.org/Bookshelves/University_Physics/Book%3A_University_Physics_(OpenStax)/Map%3A_University_Physics_I_-_Mechanics%2C_Sound%2C_Oscillations%2C_and_Waves_(OpenStax)/08%3A_Potential_Energy_and_Conservation_of_Energy/8.03%3A_Conservative_and_Non-Conservative_Forces (accessed Jun. 22nd, 2020), ch. 8.3
  6. Thermodynamics: What is the difference between heat and thermal energy?’ (web page, forum conversation), Saravanapandian, Konanur Lakshminarayana, Ronald L. Klaus and others, Quora, 2013-2018, www.quora.com/Thermodynamics-What-is-the-difference-between-heat-and-thermal-energy (accessed Jul. 22nd, 2020)