FYI -- So much for MythBusters... I wonder what Arthur C Clarke would say about this: http://zebu.uoregon.edu/~probs/therm/sunstrok/sunstrok.html http://sanfrancisco.cbslocal.com/2013/05/02/shiny-dog-bowl-blamed-in-santa-r... Shiny Dog Bowl Blamed In Santa Rosa Fire May 2, 2013 11:59 PM SANTA ROSA (CBS SF)  A dogÂs water bowl was being blamed for starting a fire at its ownerÂs Santa Rosa home, according to fire officials. North Bay firefighters called it is one of the most unusual fire calls theyÂve ever had. Perry and Shay Weisbrich said they had to call 9-1-1 after their dog TobyÂs metal bowl reflected a concentrated beam of sunlight onto the side of their house  a beam so powerful, the wood started to burn. ÂI just looked outside a minute and saw what i thought was steam. said Shay Weisbrich. ÂA big plume of it through the glass door.. So I went over there thinking, ÂthatÂs not right, not normal. And it was smoke! The Bennett Valley Fire Department responded before the fire got out of control. As for Toby, the Weisbrichs said heÂs getting a new dish: a plastic bowl.