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Mobile Jammer Circuit

This circuit is used to block the signals of cell phones with in the range of 100 meters. This circuit can be used in TV transmission and also for remote controlled toys or play things.

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10 Incredible Real-Life Mad Scientists

By the time we reach college age, most of us are aware that real scientists are nothing like their movie counterparts. There’s a lot less wild hair, while bad German accents and screams of “it lives!” are few and far between. However, not so long ago, the line between real life and fiction was much more blurred. Right into the 20th century, great scientists were conducting vital, world-changing research while also, in some cases, presenting more than their fair share of oddness and peculiarity. Here, we give you ten real-life scientists who could give Victor Frankenstein a run for his money in the eccentricity stakes.

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Automatic Washroom Light Switch

We turn On the lights in our washroom when we enter it and turn them off when we leave. We sometimes forget to turn Off the lights after leaving the washroom. This may lead to power wastage and also the lifetime of the lights may decrease. To avoid these problems, we are going to make a circuit which automatically turns On the lights when a person enters the washroom and it automatically turns it Off when he leaves it.

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50 Top Online Learning Sites

50 Top Online Learning Sites

Online learning may not appeal to everyone; however, the sheer number of online learning sites suggests that there is at least a strong interest in convenient, portable learning options — many of which are study-at-your-own-pace. For your reference, we’ve selected 50 top learning sites and loosely collected them into the categories you’ll find below. While this is not a rankings list by any means, using a variety of criteria, we’ve filtered in some of the most popular sites in each category. Many of these sites offer free lessons; some require payment or offer verified certification for a nominal fee. Some sites offer very general non-academic lessons, others provided actual college / university curriculum course material. Whatever you are looking to learn, check out the list below before trying to wade through pages of search engine listings.

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Density Based Traffic Signal System

Nowadays, controlling the traffic becomes major issue because of rapid increase in automobiles and also because of large time delays between traffic lights. So, in order to rectify this problem, we will go for density based traffic lights system. This article explains you how to control the traffic based on density.

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