That would be to live forever, but with an eternal lamp ...

    Eternal flashlightWhen I picked up this flashlight, I immediately remembered Duncan MacLeod, who would die only when his head was cut off. This "eternal" flashlight, like the immortal from the MacLeod clan, does not age, does not require batteries, it does not need bulbs, either ordinary or energy-saving. It does not even have a battery that can age and stop charging. I really have a question, "what's the joke?" After all, we all know very well that releasing eternal things is not profitable. It’s much more interesting for the manufacturer to produce disposable things. Let's see the “eternal” flashlight closer.



    To begin with, we'll figure it out, but how does he even manage to shine? Have you really thought of a perpetual motion machine? No, it turns out to be much simpler. A fairly massive magnet inside (take care of your watch so that it does not magnetize and stop) generates current when it passes through a coil. And for this you need a flashlight to shake well, up and down, up and down, faster, even faster ... uh, tired. It's good that there is a capacitor inside that allows the flashlight to work even after it has stopped shaking. And the LED is on, though there is only one that is hidden behind a massive focusing lens.

    Through the transparent casing of the eternal lamp you can see how the magnet goes inside.
    Through the transparent housing of the lamp you can see how the magnet goes inside.


    We take measurements. Almost completely discharged lamp, when its LED is barely noticeable, turn off and shake intensively for ten seconds. After that, the lamp shone more or less tolerably for about three minutes, gradually reducing the luminous flux. By the fourth minute of the world, it became so small that we can say that it was discharged. You can shake the flashlight when the light is on. From this, it only flashes quite brightly at the moment when the magnet passes through the coil. By the way, it’s good to give signals to aliens, turn it on, and swing it, one-two, one-two, and the flashlight blinks to the beat :)

    I have a LED backlight in my Sony Ericsson mobile, which can be used as a flashlight, which is always with me. For comparison: my Sony Ericsson flashlight a meter from the wall gives a bright spot about a meter in diameter. The “eternal" flashlight gives a light spot at the same distance of about 10 centimeters. However, it shines further. At a distance of five meters, the flashlight Sony Ericsson already gives a barely visible backlight. Unlike the “eternal lamp”, which gives a light spot about a meter at a distance of five meters (if you shake it well).

    Now we shake the lamp for one minute and see how much it will burn. I hope that the difference should be significant, shaking six times longer than the first time. Yes, and on the Internet they promise that one minute of shaking will allow the flashlight to burn for thirty whole minutes. Honestly, after a minute of intense shaking, my hand began to fall off, but what can’t be done for the sake of experiment. And the thing is clearly not female. The lantern is about 25 centimeters long and weighs almost 300 grams. To be absolutely exact, then 298 (weighed on electronic scales).

    The thing is not female, the length of the lamp is about 25 centimeters, and the weight is 298 grams
    The thing is not female, the length of the lamp is about 25 centimeters, and the weight is 298 grams

    In life, obviously you won’t shake the lamp so, and the result was not quite what you wanted. The lantern with great difficulty shone for about five minutes, of course not 30, but I expected the result at least fifteen minutes. We can say that for the first three to four minutes it shone normally, and then it turned out the same as for the first time, the LED, of course, lights up, but barely, and can no longer illuminate anything. Yes, a capacitor is not a battery, shake it as much as you want, but it will only shine for three to four minutes.

    I recalled from the same series a Soviet-era flashlight bug. Easier, pressed with two fingers (especially if you put a light bulb of lower voltage). If they gave me a choice of the Soviet bug and the eternal lamp, I would choose the first. Indeed - what the bug does not have is a capacitor in order to put the lamp in the on state if something needs to be highlighted, but there aren’t enough hands.

    And so, why can I use this "eternal" flashlight? Put at home in order to highlight if a ball has rolled up under the bed (a couple of seconds will be enough shaking). Highlight the counter on the stairs to write off how much electricity you burned (if you have low vision). Highlight yourself if the electricity is turned off (to find a candle and a lighter). If you have such a phone as mine, then it is better to give this flashlight to some summer resident. As a gift, it looks original.

    Now we come to the question asked at the beginning. And how profitable is it to produce such a flashlight? After all, he bought it once, and no longer need batteries, you do not need to buy anything. And it’s very profitable. At first. Using it is inconvenient, despite the fact that it is beautiful and transparent. It shines a little and weakly, and you need to shake often (the hand falls off). You realize this only when you try to use it like an ordinary lamp, and not just have fun, it’s not shining. Yes, and heavy, I do not advise taking a hike. And secondly, he has a rather sharp plastic, i.e. it is enough to drop it a couple of times, and the flashlight is covered.

    And dropping it is very simple. Design engineers decided that notwhy the lantern live forever. Let the consumer think that the lamp is “eternal”, and we will make the shape of the lamp round, but not simple, but perfect round. If you try to put it on the table, then he as a living immediately seeks to slide to the edge. If you place it vertically, then the situation turns out to be rather unstable (we remember that it is a long and heavy magnet just in the handle) and it is enough to touch it a little as it falls and starts to roll to the edge. Just turn away, like the one "hitting" on the floor and not at all MacLeod ... After all, living forever is so boring!

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