Name: ____________________________________________ Period: ______________ Date: ____________________ Question: How does a laser work? _______________________________________________________________________ Answer: A laser is made by taking a tube with mirrors on each end and filling it with a particular gas and then sending a flash of light into the tube. When the light hits the gas molecules some of them emit photons-little pieces of light. Some of the photons hit the mirrors and are reflected back and forth between the mirrors and build up until there is a powerful beam of light. Each photon in this beam of light causes more gas molecules to emit more photons, so the beam gets stronger and stronger. Soon, the beam of light is power enough to go through one of the mirrors and leave the tube. This is a laser beam. ______________________________________ _______________________________________________ Picture/Diagram 1 Picture/Diagram 2 Explanation This is a diagram of a laser before it is turned on________ Explanation This is a diagram of a laser beam turned on. ________ Interesting Fact/Information: __ Some lasers are powerful enough to pop balloons!________________________ ____________________ __________________________________________________________________________________________________ __________________________________________________________________________________________________ Works Cited: 1. http://science.howstuffworks.com/laser5.htm 2. http://inventors.about.com/od/lstartinventions/a/laser.htm 3. 4.