Bibliography (7):

1. https://www.taylorusa.com/pages/about-us

2. The Temperature of Heaven and Hell

3. 2015-05-simanek-heavenishotterthanhell.html#healey

4. The Temperature of Heaven and Hell [Retrospective]

5. Is Hell Endothermic or Exothermic? Old Collegiate Legend Involves a Student’s Coming up With a Clever Proof about the Physical Properties of Hell

6. Theological Engineering Exam

7. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Applied_Optics  :

      https://en.wikipedia.org/wiki/Applied_Optics