Team 24

Invisible Glass

Question: Can apple juice, water, vinegar or vegetable oil make Pyrex glass invisible?

Hypothesis: We think you can make Pyrex glass invisible by submerging it into vegetable oil.

Our Experiment

Materials:

Apple Juice
Vinegar
                Water
                Vegetable Oil
                Rubber gloves
                4 Pyrex beakers
                4 Pyrex rods

Safety Procedures:

1.   Do not drink oil
2.   Do not break glass
3.   Wear gloves

Procedure:

Put on rubber gloves
Take each Pyrex beaker and fill it with one of the liquids
Pick up the Pyrex rods and put one in each beaker with liquid.
Observe and see which one you no longer can see

Special Needs:
None

Watch us in action:
<feel free to add pictures, videos, etc>

The Science Behind it:

We see things with our eyes because light reflects and refracts off them. If light either from the sun or from a lamp didn't reflect we would not see any object. Reflect means how the light bounces of an object into your eyes. Refract means the bending of light as it passes from one material to another. An example of this is when you put a straw into a glass of water and it looks like the straw bends right where the straw hits the water. In order to make an object invisible you would have to take away the reflective or refractive properties. In order to take away the refractive property you need to have two materials that have the same index of refraction. This means the speed which light travels through materials. Imagine running on the beach. You can run real fast on the sand, but when you run into the water your speed slows down. The air and the water have two different densities. This means how compact an object is. In this experiment we are using Pyrex glass with a index of (n=1.147) so we need to find another substance with the same density. Though the other three liquids take away the reflective property of the pyrex glass only the vegetable oil had the same refractive index. Since the two materials have almost the same refraction speed there is no change of speed when the light goes between them. This causes no reflection nor refraction of light so the pyrex glass becomes invisible.

Conclusion:

You can make Pyrex glass invisible by submerging it into vegetable oil.
This only happens because the vegetable oil and Pyrex glass has the same refractive index.

Jack

I like tacos and I am a master with video games.