<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>></span> I haven't looked at the link to the cooker so I can't comment</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: arial,helvetica,sans-serif; background-color: transparent; font-style: normal;">> on the efficacy of that particular design but...</div><br><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;">It's kind of important to look at the design! :)<br><br>I know fresnel lenses are cool, that's why I was looking in to them. But this particular design doesn't make sense to me. Here's the link to the site rather than ebay:<br><br>http://www.symmetryco.com/home/SolarCooker/SM-604/SM-604P.htm<br><br>How does focusing the light to multiple locations in the box help? It doesn't take in any
more light, so why not just have a plain transparent enclosure?<br><br>And, as it's been pointed out, why have all sides including the bottom made from the lenses?<br><br>~sanjay<br> </div> </div> </div></body></html>