Hollow flashlight report,best flashlight 2000 lumens torch,1 diameter tactical flashlight edc - You Shoud Know

03.01.2014
Trascendio recientemente que una de las finalistas de la Feria de Ciencias Google, la adolescente canadiense Ann Makosinski, ha disenado el prototipo de una linterna que transforma el calor proporcionado por las manos que la sostienen en su fuente principal de energia, cuya carga duraria alrededor de 20 minutos. Ann Makosinski es una de las quince finalistas de la Feria Ciencias de Google, que se destaco por el diseno ergonomico de la linterna a la que bautizo Hollow Flashlight y por su eficiencia “desde el punto de vista termodinamico. Makosinski's 'hollow flashlight' is a battery-free illuminator, an ever-ready device powered by the heat of human hands which can stay lit for 20 minutes (according to Makosinki's own test run).
The YYJ youth received a modicum of attention in June, when she was picked to be the only Canadian at Google's Science Fair at their campus in Mountain View, Calif.
After an interview with Mashable, published on Tuesday and titled "This 15-Year-Old's Science Project Will Light Up Your World", Makosinski enters Google's teenage showcase with potential corporate support in tow.
The Mashable article currently has over 13,800,000 total shares, plus prime mention on the site's Facebook page and the page of its affiliate site, Social Good. The 'hollow flashlight' a€“ which Makosinski has defined as "ergonomic" and "thermodynamically efficient" a€“ runs with a coating of Peltier tiles, which are able to convert hand warmth into energy. In Makosinski's tests, the flashlight works when the tiles are warm on one side a€“ so, from your hand a€“ and cold on the other.
She will head to Google's campus as one of only five finalists in the Age 15-16 category and a€“ again a€“ the competition's only Canadian.
Other finalists' projects (in the Age 15-16 category) include Enhanced Solar Cells, a Green Method for Clean Water, a Treatment for Liver Inflammation, and 'Creating Bioplastics from Banana Peel' (which has won the event's 'Voter's Choice').
Makosinski displayed her flashlight in a video in August, which was uploaded by Google to their Science Fair channel. We encourage an open exchange of ideas on this story's topic, but we ask you to follow our guidelines for respecting community standards. This week I will be reviewing a product not yet available for the market, but interesting enough to get praise.
Every once in a blue moon you need to use a flashlight, whether it’s because the lights went out or you dropped something in the dark.
While the product is still in its infancy and proto stages it has already shown promising results.
Makosinki used Peltier tiles, which create electricity when one side of the tile is heated while the other is cool.
The Peltier tiles are arranged around a hollow aluminum tube – hollow so that the inside can receive air that will cool the backs of the tiles.
Part of Makosinski’s inspiration for the project was her desire to reduce the use of disposable batteries. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Ann Makosinski, a 15-year-old high school student from Victoria, British Columbia, designed a flashlight that's powered entirely by body heat — specifically, heat produced from the palms of your hands.
The device, which she calls "hollow flashlight," uses Peltier tiles to transform hand warmth into usable — and battery-free — energy.
She spoke to Mashable about the project's design, her affinity for thermoelectrics and what she's most looking forward to about the Google Science Fair. A few years ago, in grade seven, I did an energy harvesting project for this local science fair. For this first project, I heated one side with a candle and cooled the other side, so there was a very large temperature differential.


Interesting idea, but will it still work in warm weather, when the ambient temperature approaches body temperature? Combien de fois avez-vous maudit votre lampe de poche car les piles étaient mortes ? Aquella que nos rodea pero que no usamos nunca.” declaro la joven Ann Makosinski a la CBC News. Solo necesita una diferencia de temperatura de cinco grados para funcionar y producir hasta 5,4 mW con un brillo de cinco velas”, afirmaron autoridades de la feria.
El ganador recibira una beca universitaria de 50 mil dolares y un viaje a las Islas Galapagos. Entre los proyectos finalistas tambien destaca el metodo disenado para utilizar las cascaras de platano en la produccion de bioplastico, un metodo para determinar las tasas de metastasis del cancer de mama y un sistema para evaluar el impacto de los proyectos de infraestructura en especies en peligro de extincion. Makosinski says temperature comes into play, because there needs to be a five-degree difference between the user's hand and the room's a€“ or atmosphere's a€“ ambient temperature. I noticed that the greater the temperature differential, between the hot and the cold sides, the more power was produced. She also first publicly unveiled the device a€“ and provided a more in-depth scientific explanation a€“ in April (*video below).
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I think the Hollow flashlight will nail the coffin shut for traditional electrical torches.
Flashlights aren’t used that often in most households however there are some necessary cases. In tests, the flashlight worked for around 30 minutes, but its useful time could vary widely depending on ambient temperatures. I knew I wanted to harvest human energy, specifically heat — as humans, we radiate enough heat that's close to 100 watts' worth of lightbulbs. Our local science fair is around April, but I got caught up with class, plays and things like that, so I could only work on it from time to time. Basically, there are lots of different pairs of these two similar metals sandwiched in between two ceramic plates, and I use four of them.
Just meeting all these people who are interested in science, like me, and hearing about their ideas and just talking — seriously — about the science field in general. Powered by its own proprietary technology, Mashable is the go-to source for tech, digital culture and entertainment content for its dedicated and influential audience around the globe. Once she had the numbers figured out, Makosinski set out to get the parts necessary to turn her concept into an actual device. This clever device will take away the great inconvenience of going to the store to get batteries. Ann Makosinski, a 15 year old student from Canada, made a flashlight for her science fair project – a flashlight powered entirely by the body heat of the hand holding it. A temperature difference of just five degrees is enough to power the LED bulb on the Hollow Flashlight. If the flashlight were ever to be mass produced for sale, Makosinski says that she would make some tweaks to her prototype design to make the light more durable and efficient. But her invention can also be priceless in parts of the world where access to electricity is scarce.
Basically, they're these flat tiles, and if your body heat runs on one side, and you cool the other side, it will produce electricity.


So I thought, 'Why not take advantage of that?' The flashlight just seemed like the best application. It will always last as long as there's a difference in temperature between the environment and your hand.
In the tropics, for example, this would be especially useful because you don't normally use your phone during the day, so temperatures will have cooled off by night.
But there are still quite a lot of improvements to be made before I put this to commercial use.
Top on her shopping list: Peltier tiles, a technology that can produce electricity when warmed on one side and cooled on the other. Fotografo, escritor y corrector; cuyos gustos diversos, curiosidad y sed de conocimiento lo han llevado a desempenarse como escritor para redes de blog sobre temas de interes.
I think we are likely to see similar human powered devices in other consumer fields like TV remotes or computer mice. When the ambient temperature is colder, the flashlight will receive more power from the user’s body heat and provide more light. The inventor’s interest in harvesting sustainable energy that would ordinarily be wasted won her a $25,000 scholarship from Google. In the following years, I did all these projects that related to harvesting energy — the same basic concept.
But it will work as long as there's about a five degree differential; a 10 degree difference would work, too, but wouldn't be quite as bright.
I've been reading about the other projects in this fair, and they all sound incredible, so I can't wait to meet the people behind them. When she had the tiles, LEDs, and all the other necessary circuitry together, Makosinski began working on the actual mounting of everything inside a hollow aluminum tube. The average amount of electricity generated by palm heat was about 57 milliwatts in tests, and only about half a milliwatt is required to light the LED. Her goal was to have everything positioned in such a way that the ambient air inside the tube would cool one side of the tiles while the heat from the user’s hand would transfer through the aluminum and warm the other side.
Makosinki has already earned a place amongst 15 finalists in Google’s Science Fair, and has a legitimate chance of winning the whole thing.
Pendant ce temps, l'air ambiant qui circule dans cette lampe creuse se charge de refroidir l'autre face des composants. What’s more, in terms of performance, the device can provide a half hour of lighting at a temperature of just 50?!
Watch Makosinski explain her Hollow Flashlight project step by step: The results of Makosinski’s efforts have landed her a spot on the list of 15 finalists at the Google Science Fair being held in September, where the company will select a winner to receive $50,000 and a trip to the Galapagos Islands.
Looking beyond the Google Science Fair, Makosinski is excited by the prospects of what this device has to offer, as described on the Fair’s website: “In the future, I hope to work on improving efficiencies of the converter, increase the flashlight brightness, and perhaps use this technology for powering wireless medical sensors. For example, imagine holding your phone, and at the same time charging it just from the heat of your hand! Or perhaps all school chairs in classrooms having Peltier tiles, and we could harvest the heat and amplify it into electricity using my method.



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