our Teacher Resources - inspired by Charlotte Mason Homeschooling with a Living Books Curriculum
Difference Fluorescence and Phosphorescence
- Fluorescence is light energy produced by a process where high-energy radiation (such as ultraviolet or X-ray) is absorbed by electrons surrounding an atom and is re-emitted as light energy.
What is Fluorescence?
Some materials absorb invisible, high-energy "black" (ultraviolet) light, use part of the energy, then emit nanoseconds later bright visible light, but only while the ultraviolet light shines on it
- Phosphoresence is light energy produced by a particular type of chemical reaction where the excess chemical energy of the reactants is given off as light energy. acc to wikipedia
What is Phosphorescence?
- Phosphorescence is similar to fluorescence. Both involve absorption of energy. "Glow-in-the-dark" light (phosphorescence) is not as bright as fluorescence but lasts much longer. acc to ehow
( 20000 Leagues under the Sea - Jules Verne - Chapter Teacher Resources for Homeschooling )
Quote Jules Verne
" For some time prior to the opening of our story ships at sea had been met by an enourmous object, a long thing shaped like a spindle and infinitely larger and more rapid in its movement than a whale. At times it was phosphorescent. .. "
No comments:
Post a Comment