Photo from open sources
What are the most important elements of a portable flashlight? Of course, a light bulb and a battery. A quality light bulb can be durable, but the battery must be constantly changed or recharged. How many real people, like the heroes of horror films, paid life without doing it well in advance. However, now everything can change – Canadian engineers developed an innovative flashlight, which in theory is able to function indefinitely without any batteries.
Of course, the device still needs to work electricity, however, he takes it not from the battery, but directly from finger of the owner. It’s enough to touch a special pillow plate on the body of the flashlight, and that instantly starts convert the heat of human skin into electricity. Miniature thermoelectric generator receives energy due to the difference temperatures between the environment and the body. For example, if on street twenty eight degrees Celsius, the generator will give out fifteen milliamps, which is enough for power five-millimeter superbright LED bulb.
Canadians plan to make a flashlight case out of aluminum or titanium. The aluminum device will weigh thirty-five grams, titanium – forty-five. Of course, the second option will come out more expensive. According to the inventors, the choice of metals is by no means accidental. Firstly, they are durable, and secondly, the metal case is also serves as a radiator, making the operation of the thermoelectric generator even more effective.
Like many other modern inventors with a great idea, but without funds for its implementation, Canadian craftsmen decided to seek funding for his project on the Kickstarter website serving to attract donations from ordinary users of the Network. Engineers planned to collect a modest amount of five thousand American dollars, however a durable flashlight devoid of battery, as far as visitors liked the resource, that they donated over seventy-three thousand to this project.
