A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion
of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form
of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky
directly opposite the sun.
Objective: This research reveals the physics behind the creation of rainbows and to find out "Is the artificial
creation of rainbows help full in any way when it comes to our understanding of ways in which light works.
The viscosity of a particular fluid is an interesting parameter that plays an important role in fluid dynamics of that fluid. We chose the common household cooking item canola oil. Using a ball drop, we set out to measure viscosity at various temperatures and create a model for the viscosity of canola oil as a function of temperature, as well as an accurate measurement for viscosity at room temperature. It was found that the viscosity between 0 and 40 degrees Celsius can be approximated using an exponential function and that an estimation for viscosity at room temperature was not very difficult to obtain. The precision of this measurement was limited by uncertainty in lab equipment used to measure various quantities as well as the image analysis software we used and the limited frame-rate of our camera.
Jamie Clark
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