Physics 1 D Period
Lizzy Adamsen
Sam Boston
Nick Brown
Cole Bryant
Nick DiCorpo
Margaret Gregorich
Maddie Harris
Oz Jensen
Phoebe Kurth
Mack Lemkau
Grace McKessy
Nicole Mulleady
Maddie Otero
Riley Page
Phil Platek
Student Choice Awards
Icy Cloud
Lizzy Adamsen
This image demonstrates phase change and molecular movement, as dry ice sublimates from a solid to gas. When you place dry ice into water, a thick fog is created as condensed water vapor mixes with carbon dioxide while the sudden change in temperature causes water vapor in the air to condense into small water droplets, creating fog. While submerged in water, the carbon dioxide sublimates into a gaseous form, producing cold gas bubbles. As the bubbles escape at the surface of the water and are exposed to warm air, the bubbles condense creating advection fog. Advection fog is formed as warm air molecules pass over a cold surface, causing the molecules to chill to a saturation, creating fog.
Upside Down Water
Riley Page
This photo demonstrates the concept known as refraction. Refraction is the change in direction of a wave passing from one medium to another, caused by a change in speed. Light moves faster in air than it does in water, so the light slows down as it travels into the water, causing a slight change in direction. The light experiences this change in direction due to the different densities of water and air. When light enters a substance that is more dense, water in this case, it bends more towards the normal line. Because of the way the light is bending, the sign in the background appear upside down in the water droplet.
Reflection of Light
Nick Brown
This image exemplifies two different components that take part in the reflection of light; specular reflection and diffuse reflection. Specular reflection is when light reflects off of a smooth surface at the same angle as it had hit the surface. This introduces both the angle of incidence and the angle of reflection, which are the two equal angles of the light waves that interact with the water. The angle of incidence is the angle at which the light hits the reflecting surface (the water) and the angle of reflection is the angle at which the light bounces off the reflecting surface (the water). In the image, the water is reflecting the trees and the sky because all reflected light obeys the relationship that the angle of incidence equals the angle of reflection. However, although this rule is still in fact being obeyed, the image reflecting off the water is not completely identical to what is being reflected. This is because the lake is not perfectly still due to the wind, causing the rays of light to reflect off of different levels and shapes of water. As a result, the rays are reflected at many different angles; ultimately causing the image reflecting off the water to be disrupted. This is called diffuse reflection.
Water Droplets on a Petal
Nick DiCorpo
Here, water droplets remain stationary on a rose petal. These droplets remain stationary because rose petals have small outgrowths, which are called micro-papillae, that are invisible to the naked eye. These micro-papillae's give the petals significant roughness and make the petals become water repellent, which is called superhydrophobicity, and makes them adhesive. Therefore, because of these micro-papillae's on rose petals, the water droplets remain stationary on the rose petals.
Leaning Tower of Coke
Riley Page
This photo demonstrates the concept of the center of gravity. The center of gravity is the point on an object that when supported on that spot, the object will balance. The reason why the can does not fall over is because a leaning object will not fall over as long as the line through it's center of gravity doesn't pass it's base. In this case, the center of gravity is where the coke can is touching the pole. This is a result of the amount of liquid in the can. There was roughly 100 mL of water in the can when we balanced it. This allows the can to balance because all of the water is concentrated at the bottom of the can. If there were more water in it then the distribution of the weight would not allow for the can to balance at that point, as the center of gravity would change.
Color Bomb
Phoebe Kurth
This image is an example of thin film interference. Thin film interference is when a single light wave is reflected twice, once from an upper boundary and a second time from a lower boundary. In this photo, a thin film of oil rests on top of a puddle of water since oil is less dense than water. A ray of light hits the boundary between the air and the oil and the ray reflects. The same ray passes through the first boundary and hits the second boundary between the oil and water. This ray also reflects and two events can occur. The first is called constructive interference. This is when the path difference of the two reflected wavelengths are in phase (synchronized). The white light reflected results in a variety of colors depending on the thickness of the film and the length of the wave. The second event that can occur is called destructive interference which is when the two wavelengths are out of phase (not synchronized) and cancel each other out. Therefore, the eye can can see minimal light and the intensity of the color is reduced.
