Chemiluminescence And Hydrogen Using The Law Of Reflection

Without using electricity, there are many ways to illuminate a parking lot. First, I can decorate the ceilings and walls of the parking lot with glow sticks (light sticks). This method of producing light is called chemiluminescence. Chemiluminescence is the direct production of light as the result of a chemical reaction with little or no heat produced. The glow sticks can operate by causing two chemicals to mix. A common reaction used for these devices is hydrogen peroxide and phenol oxalate ester. The hydrogen peroxide is kept in a thin, small glass vial in the middle of the stick, and the second chemical phenol oxalate ester is in the main body of the light stick. Bending the light stick in the middle causes the small glass vial of hydrogen
The Law of Reflection states that the angle of incidence is always equal to the angle of reflection in a plane mirror, and that the incident ray, the normal, and the reflective ray all lie on the same plane. By placing each plane mirror at a 45 degree angle at each corner the tube, light entering from one end from a light source (for example, a light bulb in in the store) will change 90 degrees in direction, which will change in direction 90 degrees again by the second plane mirror placed at the other corner of the tube, and to the eye. This is possible because the incident light that hits a mirror at 45 degrees to the normal of the mirror will reflect 45 degrees to the normal to accord with the Law of Reflection, resulting a 90-degree change in direction for each plane mirror. This happens twice, allowing the change in direction of light of a total of 180 degrees but ultimately in the same direction. Periscopes are effective to view objects at a different altitude; using this optical device, I can see a virtual image of what is over the crowd of people below the
Triangular prisms have a critical angle of 41.4 degrees; thus, if the prism is oriented in such a way that the angle of incidence is greater than the critical angle (41.4 degrees), total internal reflection will result. Prisms are suggested for use in this task because it is more effective than regular mirrors because it reflects almost 100% of the light by total internal reflection while mirrors absorb some light, and are more durable than mirrors because the metal/silvered films of mirrors deteriorate easily. By placing the prisms 45 degrees in each corner of the interior of the store, since 45 degrees is an angle of incidence greater than the glass prism’s critical angle of 41.4 degrees, total internal reflection will occur, changing the direction of light by 90 degrees (according to the Law of Reflection, the angle of incidence must equal the angle of reflection- the angle of incidence at 45 degrees to the normal will result in the angle of reflection at 45 degrees to the normal). This will occur for four of the triangular prisms due to the Law of Reflection, and will effectively reflect the laser beam along the interior of the store. Unlike white light, laser