More info HERE
the future. not much use but definitely innovative
Pretty cool.
I seen this yesterday, was gonna post it but the server issues cropped up.
Very interesting concept. Would not work well for me though; perpetually cold hands, like room temperature.
And if you get scared in the dark, cold hands and instant panic mode enabled: “Where did the light go?!” Very bad zombie apocalypse or alien invasion light.
pretty cool idea
pretty cool idea
peltier effect devices are not very efficient, but this is great proof of concept, they have loads of promise if made more efficient someday
Cool. 26$ for the prototype, so mass production could make this a light for a lot of people who dont check their batteries. ;)
Ahh, but read the fine print. The light only works if the air temp is 40-50F below your body temp (could be made so it needs to be over your body temp). Utterly useless for most situations.
I’m thinking if it’s hollow…
And it’s freezing cold outside…
Couldn’t you put something else inside the flashlight to warm up the inside?
I should get my head out of the gutter… :zipper_mouth_face:
Oh gosh, are you thinking what I think you’re thinking? 
Takin the term flashaholic to a whole other level!
It won’t work… Peltier’s need a (rather substantial) temperature difference to make electricity.
Really nice to see it work. Maybe in the future with the right materials it could adapt to the changing environment and hand temperatures. Thanks for sharing!
She’s awesome. That thing wouldn’t work in this weather though. lol
I didn’t read this, but already assumed it…
The idea still stands as a good one, but probably only for cold environments.
Interesting concept, I actually didn’t expect to see any light in the clip but she really made it. Pretty cool. Thumbs up!
More efficient thermoelectrics are DEFINITELY needed here. With more efficient thrmoelectrics also comes the possibility of having a small fan to keep the heatsink cooler for even greater efficiency. But current thermoelectrics probably couldn’t even power a fan (let alone a fan AND light).
Interestingly, I stumbled onto this some time ago. If everything goes well, this could improve thermoelectric efficiency from the current 3-5% to 15-20% - a HUGE improvement. Of course, with the delta T seen here, you wouldn’t see that kind of efficiency. But efficiency would still improve accordingly with newer materials.