This Spring Break was packed with fun. I went on hikes, dinners, beaches, talked with family and friends, drove around, and more. A few days ago, I went to see “Oz: The Great and Powerful”, which was okay. I took a picture at the last scene to describe the science behind the theatre.
When the lights are on everything in the room is a dark color, dark red or dark black. The objective is to have no reflections in the room other than from the screen which is white when the lights are on. The three fundamental colors of light red, blue, and green are used to form every other color projected onto the screen. The screen is then able to reflect every color back to our eyes because it is white. This is the idea of addition. Like a painter adds colors to a white canvas, colors of the visible spectrum is added to a white projector screen which we see. The dark walls should absorb all light, so anything reflected onto it is absorbed and not reflected.
Although in this picture the ceiling above takes on a red color because the ceiling is a dark red carpet and will absorb every other color, but red which is reflected.
When at school, I laugh at the students who attempt to fix themselves through a school window. The window is two-way and yet students can see themselves in it without noticing the people behind it.
In this photo I am adjusting myself in a Castle Building window. The sun produced light which bent through the front doors then reflected off the floor. There was also light produced from the ceiling fixtures. This combination created a “mirror”. Reflection is possible because light hits the glass at a certain angle. Because of that special angle the window then acts like a planar mirror. The image created is virtual and same distant away from mirror to object. Sometimes the glass does not produce an image.
Mr. Snell had performed many experiments to develop a way to find the index of refraction. With this knowledge we know the index of refraction of glass, and this can determine the angle in which light is internally reflected. This angle is the same angle in which I could see myself in the picture.
I hope students are more aware that the windows are two-way and will steer clear from embarrassing motions in front of it.