light show

What's the application? The use of lasers to provide an entertaining light show for humans, dogs, or cats. What problem(s) is it the solution to? 1) "How will I entertain my dog or cat?" 2) "How can we distract people from the fact that Roger Daltrey has no voice left?" Why are lasers essential? Lasers provide coherent beams of light, which remain small over very large distances, allowing you to project a small spot or a tight beam across a room, or even a football stadium. Why is it cool? Duuuuude! Lasers, duuuuude! Why isn't it cool enough? 1) It's fundamentally just a toy. 2) No amount…