Natural Occurrence
Naturally occurring decay heat is a significant source of the heat in the interior of the Earth. Radioactive isotopes of uranium, thorium and potassium are the primary contributors to this decay heat, and this Radioactive decay is the primary source of heat from which Geothermal energy derives.
Read more about this topic: Decay Heat
Famous quotes containing the words natural and/or occurrence:
“Self-esteem creates natural highs. Knowing that you’re lovable helps you to love more. Knowing that you’re important helps you to make a difference to to others. Knowing that you are capable empowers you to create more. Knowing that you’re valuable and that you have a special place in the universe is a serene spiritual joy in itself.”
—Louise Hart (20th century)
“One is absolutely sickened, not by the crimes that the wicked have committed, but by the punishments that the good have inflicted; and a community is infinitely more brutalised by the habitual employment of punishment than it is by the occasional occurrence of crime.”
—Oscar Wilde (1854–1900)