# Concentrated sunlight using mirrors enough to kill someone? **URL:** \ **Category:** Factual Questions\ **Created:** [May 8, 2023, 8:29am UTC](https://boards.straightdope.com/t/concentrated-sunlight-using-mirrors-enough-to-kill-someone/983739 "2023-05-08T08:29:08Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![bob\_2](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bob_2/32/3341_2.png) [@bob\_2](https://boards.straightdope.com/u/bob_2)\ **Post date:** [May 8, 2023, 9:17am UTC](https://boards.straightdope.com/t/concentrated-sunlight-using-mirrors-enough-to-kill-someone/983739/4 "2023-05-08T09:17:07Z")
> [@Celtic\_Kitsune](#): > > hand-held mirrors to concentrate sunlight on the referee who is promptly killed You could read this thread: > [@The practicalities of manually focusing multiple mirrors on a single target](https://boards.straightdope.com/t/the-practicalities-of-manually-focusing-multiple-mirrors-on-a-single-target/500535): > > A question provoked by the now-locked mirror protest thread (I obtained permission to start this one, BTW)… 1000 people are recruited to try to set light to a target by reflecting sunlight onto it, using individual hand-held mirrors. The question is: even if they are all positioned on a special gantry that means they can all see the target and the sun, has any individual any hope of actually reflecting sunlight so as to hit the target? It was easy enough for me to reflect a small spot of ligh… --- _[View the full topic](https://boards.straightdope.com/t/concentrated-sunlight-using-mirrors-enough-to-kill-someone/983739)._