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GLOWING WATER :)

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by

laura ospina

on 29 April 2014

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Transcript of GLOWING WATER :)

By changing the quantity of the variables and combining them, we want to see which are the best methods to create luminescent water and how the luminescence of these liquids are affected.
PHOSPHORS
A phosphor is luminescent substance that emits light when excited by radiation.
OUR EXPERIMENT
GLOWING WATER :)
Main question!
How does the method and quantity of the dependent variables used to make water glow affect the luminescence of water?
WHY DOES IT GLOW?
A black light or ultra violet light emits electromagnetic radiation that can make objects that contain phosphors glow.
FLUORESCENCE
Fluorescence is when objects emit luminescence or emit a visible light when they absorb radiation and then immediately emit radiation.
QUININE
Quinine comes from the bark of the cinchona tree that is found in the rainforest. This substance has many uses from medical to culinary.
Phosphors are substances that absorb energy and then emit visible light by turning UV radiation into light that you can see.
Quinines most known property is that it treats malaria.
Quinine, dew to its fluorescent properties, is used in dinks and cocktails but quinine has an extremely bitter taste that has to be lowered down by adding sugar to the drinks.
HYPOTHESIS
If we use an ultraviolet light on a cup full of tonic water then the water will emit a much more powerful glow because the tonic water contains quinine which is rich in phosphors that where they are exposed to UV light they will be exited by the radiation it emits and it will produce a visible light.

VARIABLES
EXTERNAL VARIABLES:
• Light in the room
• Highlighter brand
• Tonic water brand
MATERIALS
• 4 cups of tonic water
• 360 ml of hydrogen peroxide
• 9 highlighters
• 1 ultraviolet light
• 6 cups of water
• 9 empty water bottles with their respective lid
• A dark space
• Squared paper
:)
OTHER EXPERIMENTS
Highlighter
They are made of a felt tip pen . It contains a colorant and a liquid which can be water or oil.
The highlighters are fluorescent because they absorb radiation and emit visible light because they contain phosphors
Our results and research show that the orange highlighter does not have a sufficient amount of phosphors to glow.
References:
• ducksters. (2014, April 3). Physics for kids: Types of electromagnetic waves.. Retrieved from http://www.ducksters.com/science/physics/types_of_electromagnetic_waves.php
• Merriam-Webster, Incorporated. (2014). phosphor. Retrieved from http://www.merriam-webster.com/dictionary/phosphor
• Harris, T. (2014). How black lights work. Retrieved from http://science.howstuffworks.com/innovation/everyday-innovations/black-light1.htm
• GREENBAUM, H., & RUBINSTEIN, D. (2012, January 20). The hand-held highlighter. Retrieved from http://www.nytimes.com/2012/01/22/magazine/the-hand-held-highlighter.html?_r=3&
• Darielle (2013, April 14). History of ultraviolet light. Retrieved from http://goodchangesnowblog.com/history-of-ultraviolet-light/
• Science Kids. (2014, January 24). Make glowing water. Retrieved from http://www.sciencekids.co.nz/experiments/glowingwater.html
• Merriam-Webster, Incorporated. (2014). fluorescence. Retrieved from http://www.merriam-webster.com/dictionary/fluorescence
Full transcript