Hey, have you seen that famous light bulb, that keeps working for more than one hundred years?! Why doesn’t it burn out? Let’s find out… What is so special about that bulb? Why that light bulb can work for a hundred years, but modern light bulbs cannot even last for a couple of years? Some people say that modern bulbs have planned obsolescence. And I think it is partly true, but not completely, and I’ll explain you why in this video. But first, let’s see what difference between that famous light bulb and modern light bulbs …and let’s try to figure out how we can achieve the same result The most obvious what you can see is the brightness and here is a quote about it from Wikipedia: “The Centennial Light was originally a 30-watt or 60-watt bulb but now is very dim, emitting about the same light as a 4-watt nightlight” And that is very important. That’s the secret of the long lifespan of that bulb. The light bulb is working just at about 10 percent of the initial capacity. Modern light bulbs, work at 100 present, and that is why they burn out so quickly. And manufacturers aren’t going to change that for two reasons. First reason: they don’t want to make bulbs that work forever, but actually that’s not the main reason. The main reason is Energy Efficiency To make more energy efficient light bulb, that produces as much as possible visible light, but as less as possible heat and other radiation, you need to make light bulbs, with a very high temperature of the filament in working state. In short: The higher working temperature of the filament the more energy efficient light bulb you make, but here is the problem: the higher temperature of the filament the faster light bulb burn out. So it’s a trade-off. But actually, all of this can be calculated, and light bulb can be made with the smallest possible economical cost. Well, now we know why bulbs burn out, and how to make them work longer, Now I’ll show you two simple tricks that will lower the power consumption, and therefore significantly increase the life of the light bulb. TRICK NUMBER 1: Using a diode The idea is pretty simple; you just need to connect a diode sequentially Like this… let me show the difference with diode, and without it TRICK NUMBER 2: even simpler Just connect 2 light bulbs sequentially. See the difference!? With this simple tricks, your light bulbs will never burn out. But, do you still use incandescent light bulbs? Let me know in the comments below. And Thanks for watching!