Glow Essay Example for Free

Glow EssayInvestigation of the effect of cold temperatures on the enduring time of beam shells. Aim to investigate whether freezing a glow bemuse will restore its longevity. Hypothesis The glow sticks will last longer when they are frozen than when they are at means temperature. Background information Glow sticks are made of hydrogen peroxide, a phenyl oxalate called ester, and phosphorescent discolour. The ester and phosphorescent dye are kept in cardinal part of the glow stick, the hydrogen peroxide in the other, set-apart by a piece of glass. No chemical reaction occurs until the glass breaks, combining the chemicals together intimate the tube.Cooling a glow stick slows the reaction a s wakefully and causes it to last longer, but the light is dimmer. This can be demonstrated by freezing an activated glow stick. When it is reheated, it will begin to glow again. However, if the chemical reaction has already occurred and the glow stick has already foregone out, freezi ng the glow stick will not cause it to begin glowing again. A high quality glow stick will last 8-12 hours, provided there is no otherwise interference. It will glow faintly for about one day after this time period is over, however the primary glow will slang gone out.Other factors, such as the color of the glow stick (Green, yellow and orange are the brightest colorise and therefore last the longest. ), the previous treatment of the glow sticks (Sometimes, a glow stick will have been accidently activated by being knocked over or bumped before the activator intends to, meaning that the chemical reaction may have already occurred by the time it is intended to be activated. ) and the amount of light they are capable to and for how long. (Being hit with direct light damages the glow stick, lessening its longevity. )