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(Gizmodo)   Fifteen year old Canadian girl invents flashlight powered by heat from the human hand. The machines found all the energy they would ever need   (gizmodo.com) divider line 44
    More: Cool, Canadians, science fairs, Plastic pressure pipe systems, alternative energy, Miami Heat  
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4173 clicks; posted to Geek » on 28 Jun 2013 at 4:52 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-06-28 01:41:46 PM
I have a fleshlight that is powered by the motion of the human hand.
 
2013-06-28 01:47:33 PM
What if it's freezing outside? You expect me to take off a glove?  What if it's really hot outside?  Is the peltier going to over heat?

Also, your flashlight is weaksauce.  Should come in real handy if I ever have to illuminate something less than a foot away.
 
2013-06-28 02:11:59 PM
Fap power!  Is there anything it can't do?
 
2013-06-28 02:34:59 PM

The Beatings Will Continue Until Morale Improves: I have a fleshlight that is powered by the motion of the human hand.


I'm gonna go have a seat over there.
 
2013-06-28 04:54:24 PM
www.extremetech.com
 
2013-06-28 04:56:20 PM
Peltiers are pretty damn cool... alternately they are pretty damn hot.
And that sentence was punnier than I intended, please don't react negatively.
 
2013-06-28 04:58:55 PM

Honest Bender: What if it's freezing outside? You expect me to take off a glove?


Give her a break, she's from Canada. They never get cold weather or use gloves there.
 
2013-06-28 04:59:49 PM
Gizmodo's blocked here. Does the article mention how this heat to electricity conversion works without an intermediary (or with one) and avoids violating the law of entropy?
 
2013-06-28 05:01:29 PM
Awesome! A sympathy lamp. She needs to hand the plans to MAster Kelvn in the fishery and she'll have university tuition covered in no time.
 
2013-06-28 05:02:29 PM
Well played, Subbs...well played indeed!
 
2013-06-28 05:03:08 PM

The Beatings Will Continue Until Morale Improves: I have a fleshlight that is powered by the motion of the human hand.


Umm, it's flashlight, not fleshlight.

/Subtle differences.
 
2013-06-28 05:07:31 PM
If only the world could have harnessed the hand power I was generating at age fifteen.
 
2013-06-28 05:07:35 PM
Good thing someone made LEDs more efficient in the last few years.
 
2013-06-28 05:07:44 PM
Except the amount of light it produces is absolutely worthless.

Neat idea, though.
 
2013-06-28 05:20:41 PM

Jormungandr: Peltiers are pretty damn cool... alternately they are pretty damn hot.
And that sentence was punnier than I intended, please don't react negatively.


Heh, I remember when I first started experimenting with them many years ago. I was holding a 60W thermo junction in my hand for the first time. Connected it to a 12 volt trolling motor battery. Took about 1/10th of a second for me to drop it and wave my hand around like I was stung. Kids.

That was grade school too. I set up a system using cheap plastic fresnel lenses to focus several sq ft of sunlight on the thermo junction. Solar panels at the time (30 years ago) were expensive and not as efficient. Many sq ft of fresnel lens was cheap. My goal, other than amusing myself and not getting a date for all of high school, was to come up with a system with higher current output than solar cells per square foot for less total materials cost. Was successful, though it was clunky and fragile. No one gave me a scholarship for it.
 
2013-06-28 05:24:42 PM

tacchimonster: Except the amount of light it produces is absolutely worthless.

Neat idea, though.


uh... what were you doing at 15?
 
2013-06-28 05:26:58 PM

SordidEuphemism: avoids violating the law of entropy?


What? Unless there were claims of 100%+ efficient heat-to-energy transfer, not sure why you would imagine this would violate the second law. Your body generates heat. Part of this heat is wasted. This flashlight harnesses the otherwise wasted heat from the hand to power an LED bulb.

tacchimonster: Except the amount of light it produces is absolutely worthless.


Not worthless, but as a replacement flashlight this would be not be worthwhile. I think the proof of concept was great. Could be useful in creating active indicators while cycling and jogging or the purposes of rescue. Plus, in total darkness and pointed away, might create enough light to see proper switches and such when groping about against the wall, though probably for novelty more than practicality (how awesome would that be, can't quite find the switch but the switch glows with your hand pressed against, pointless but neat).
 
2013-06-28 05:37:40 PM

Vangor: SordidEuphemism: avoids violating the law of entropy?

What? Unless there were claims of 100%+ efficient heat-to-energy transfer, not sure why you would imagine this would violate the second law. Your body generates heat. Part of this heat is wasted. This flashlight harnesses the otherwise wasted heat from the hand to power an LED bulb.


I understand the law of entropy. I also understand that tech magazines like to make extrapolated claims based on imagined/incomplete equations. The most egregious I've seen lately was an article in the local paper which used Einstein's equation for mass-to-energy conversion as the basis for the output for a new nuclear facility being built a bit south of here. Looking back, I realize I phrased my question poorly, and apologize for that. As I am unfamiliar with the scope of Gizmodo's reporting, I was curious if they brought up the subject at all.

Further, I was curious (from the other part of my question) if this was a direct skin-contact Peltier device, or perhaps a heatsink-to-Peltier system, such as a gel or fluid which would absorb body heat for a time, and then use it to generate electricity at need.
 
2013-06-28 06:18:13 PM

Vangor: Unless there were claims of 100%+ efficient heat-to-energy transfer, not sure why you would imagine this would violate the second law. Your body generates heat. Part of this heat is wasted. This flashlight harnesses the otherwise wasted heat from the hand to power an LED bulb.


More to the point, you need a heat differential, not just heat, to generate power.  I think that's what's the guy was talking about.  You can't just "harness heat" to do anything useful unless you also have a source of "less hot" handy.
 
2013-06-28 06:21:35 PM
"DAD!! Can you build something for me?"
 
2013-06-28 06:29:26 PM
Woof! Think what she could do to revolutionize the toy business!!! (cough cough)
 
2013-06-28 06:39:22 PM
I should think that the colder the ambient air, the better the junction will work, since the flow is based on a thermal difference on the two sides.  Peltiers are also the heart of automobile 12 volt hot/cold  food "coolers".
 
2013-06-28 06:44:35 PM
Why do they always make these headlines out to be as if some major scientific miracle has occurred when in fact it's actually a pretty mundane application of well-understood principles?
 
2013-06-28 06:57:25 PM

Vangor: SordidEuphemism: avoids violating the law of entropy?

What? Unless there were claims of 100%+ efficient heat-to-energy transfer, not sure why you would imagine this would violate the second law. Your body generates heat. Part of this heat is wasted. This flashlight harnesses the otherwise wasted heat from the hand to power an LED bulb.

tacchimonster: Except the amount of light it produces is absolutely worthless.

Not worthless, but as a replacement flashlight this would be not be worthwhile. I think the proof of concept was great. Could be useful in creating active indicators while cycling and jogging or the purposes of rescue.


I could also see it being useful in clothing for hikers or workers who work in minimal-light conditions. Imagine using your own body heat to light up your clothing so you can be seen
 
2013-06-28 07:07:51 PM
And while researching her favorite topic she came across a device called a Peltier tile.

So she assembled some pre-fab parts and made something.

I built a space ship out of legos when I was 12, kiddo. Up your game.
 
2013-06-28 07:11:27 PM

doglover: And while researching her favorite topic she came across a device called a Peltier tile.

So she assembled some pre-fab parts and made something.

I built a space ship out of legos when I was 12, kiddo. Up your game.


This is why Einstein and Newton were men.
 
2013-06-28 08:02:05 PM

Uchiha_Cycliste: Awesome! A sympathy lamp. She needs to hand the plans to MAster Kelvn in the fishery and she'll have university tuition covered in no time.


Looks like a thief's lamp to me, the way it directs light in only one direction. Kilvin will probably take it for himself and ask why she'd need such an unsavory device. Until she builds an arrowcatch that is.
 
2013-06-28 08:08:08 PM
Since I've been a little guy the winter mantra has been: 'Wear a hat. You lose most of your body heat through the top of your head.' So design Peltier toques (hats), maybe combined with special hair product that improves connectivity? snap/connected to a compatible jacket keeps the cell/ipad/etc. in your pocket trickle charged?
 
2013-06-28 09:35:49 PM
On the other hand, if the thing lights up, you aren't dead. Or at least not for very long. That way you always know.
 
2013-06-28 09:50:38 PM
I'm pretty sure I already saw this on instructables.com

Still a clever girl if she didn't steal the idea.
 
2013-06-28 09:56:51 PM
50 lux ain't terrible for a flashlight that never needs charging and only costs $26 to assemble. It would be more than you need to navigate your surroundings, but not enough to easily read by.

I'm curious as to why the adjectives "Canadian" and "girl" were in the headline, though.  Not really necessary, unless you think Canadians and girls aren't capable of inventing things, and history will prove you wrong on both those counts.

/canadian
//not a girl
///slashies
 
2013-06-28 10:18:34 PM

big pig peaches: I'm pretty sure I already saw this on instructables.com

Still a clever girl if she didn't steal the idea.


http://www.instructables.com/id/Battery-Charger-Powered-by-Fire/
(same concept)
 
2013-06-29 12:10:30 AM
Vaultage.
 
2013-06-29 12:43:47 AM
BigJT: 50 lux ain't terrible for a flashlight that never needs charging and only costs $26 to assemble. It would be more than you need to navigate your surroundings, but not enough to easily read by.
 
I'm curious as to why the adjectives "Canadian" and "girl" were in the headline, though.  Not really necessary, unless you think Canadians and girls aren't capable of inventing things, and history will prove you wrong on both those counts.

I agree, the headline should just say "Invention invented".

Why waste space with all that extra information.
 
2013-06-29 01:02:32 AM

Begoggle: BigJT: 50 lux ain't terrible for a flashlight that never needs charging and only costs $26 to assemble. It would be more than you need to navigate your surroundings, but not enough to easily read by.
 
I'm curious as to why the adjectives "Canadian" and "girl" were in the headline, though.  Not really necessary, unless you think Canadians and girls aren't capable of inventing things, and history will prove you wrong on both those counts.

I agree, the headline should just say "Invention invented".

Why waste space with all that extra information.


How many other headlines about in the Geek tab give gender and nationality information about the inventor or researcher?  Is this headline an improvement over "Fifteen year old invents flashlight powered by heat from the human hand. The machines found all the energy they would ever need"?  Does the gender or nationality make this more interesting somehow?  If you think it does, why do you think that?
 
2013-06-29 01:23:18 AM
She seems kind of smug in that video. I'd chalk it down to the result of the obsessive Asian parent cliche, but her name is Makosinski so she should have some days where she chugs vodka with her dad.
 
2013-06-29 01:26:31 AM

SordidEuphemism: Gizmodo's blocked here. Does the article mention how this heat to electricity conversion works without an intermediary (or with one) and avoids violating the law of entropy?


I may be way oversimplifying this but in a Peltier electrons carry heat. Since one side is warm and the other hot heat will flow as it does it brings some electrons for the ride. They also can work in reverse where electrons carry heat from 1 side to the other. It doesn't violate entropy because heat flows from warm to cool, if the flashlight were in a room that was 98.6 there would be 0 energy produced.
 
2013-06-29 09:18:41 AM
Just like a woman 2 min of talking and 10 seconds actually showing you what you want.
 
2013-06-29 09:58:22 AM
Boeing could use that technology on their Dreamliner.  With all the battery fires they've been having, the extra power could be used for fire-suppression equipment.
 
2013-06-29 10:44:04 AM

FlashHarry: tacchimonster: Except the amount of light it produces is absolutely worthless.

Neat idea, though.

uh... what were you doing at 15?


---

Not wasting my time building a flashlight nobody can use, that much is for certain.  I don't know, probably dominating little league and enjoying my childhood.  How about you?
 
2013-06-29 10:49:00 AM

ng2810: Vangor: SordidEuphemism: avoids violating the law of entropy?

What? Unless there were claims of 100%+ efficient heat-to-energy transfer, not sure why you would imagine this would violate the second law. Your body generates heat. Part of this heat is wasted. This flashlight harnesses the otherwise wasted heat from the hand to power an LED bulb.

tacchimonster: Except the amount of light it produces is absolutely worthless.

Not worthless, but as a replacement flashlight this would be not be worthwhile. I think the proof of concept was great. Could be useful in creating active indicators while cycling and jogging or the purposes of rescue.

I could also see it being useful in clothing for hikers or workers who work in minimal-light conditions. Imagine using your own body heat to light up your clothing so you can be seen


---

That is actually a really clever alternative if they cannot find a way to boost the power.
 
2013-06-29 11:07:55 AM
I don't (dissolve) know who (dissolve)  shot (dissolve)  her video but (dissolve)  they (dissolve)  really (dissolve)  need (dissolve)  to learn how (dissolve)  to (dissolve)  edit without using dissolves. Is  (dissolve) there one (dissolve)  complete (dissolve)  sentence that(dissolve)  doesn't have (dissolve) them?
 
2013-06-29 12:18:23 PM

Any Pie Left: I don't (dissolve) know who (dissolve)  shot (dissolve)  her video but (dissolve)  they (dissolve)  really (dissolve)  need (dissolve)  to learn how (dissolve)  to (dissolve)  edit without using dissolves. Is  (dissolve) there one (dissolve)  complete (dissolve)  sentence that(dissolve)  doesn't have (dissolve) them?


That was a bit annoying, yes. The video would have been a lot more interesting if they'd covered up the audio edits with cutaways showing  the various components she was talking about.

That said, good for her. It's fun to make stuff -- especially if the stuff you make actually does something.
 
2013-06-29 06:22:21 PM

FlashHarry: tacchimonster: Except the amount of light it produces is absolutely worthless.

Neat idea, though.

uh... what were you doing at 15?


I was also discovering the energy in a 15 yo girl's hand.
Nudge nudge, wink wink.

Spoiler: There is plenty enough to power a flashlight
 
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