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মৃত উট দেখলে কাছেও যাবেন না কিন্তু কেন?

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সাগর তলের রহস্যময় কিছু আবিষ্কার যা দেখে বিজ্ঞানীরা নিজেরাই অবাক । deep s...

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মানুষগুলোকে কেন এভাবে জ্যান্ত সিদ্ধ করা হচ্ছে | Amazing fact about Phili...

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Multi level smart car parking system✌✌✌

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শিশুদের নিয়ে অদ্ভুত কিছু কনটেস্ট । amazing baby competition

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শিশুদের নিয়ে অদ্ভুত কিছু কনটেস্ট । amazing baby competition

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গরুর চোখে VR গ্লাস কেন পরানো হল | Why These Cows Are Wearing VR Glasses | carbon copy clips

@useless-bangladeshfacts, 

@pagol-chagol 

@shownarbangla

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Caligraphy

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Childhood fear vs Adult fear

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গরুর চোখে VR গ্লাস কেন পরানো হল | Why These Cows Are Wearing VR Glasses | carbon copy clips

@useless-bangladeshfacts, 

@pagol-chagol 

@shownarbangla

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আগুন পান বা FIRE PAAN ও আগুন ফুচকা বা FIRE PANI PURI খেলে মুখ পুড়ে না কেন?

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আগুন পান বা FIRE PAAN ও আগুন ফুচকা বা FIRE PANI PURI খেলে মুখ পুড়ে না কেন?

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আগুন পান বা FIRE PAAN ও আগুন ফুচকা বা FIRE PANI PURI খেলে মুখ পুড়ে না কেন?

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Video in the link 

https://www.youtube.com/watch?v=zPkKMG51WsY 

WaterLight, 

This low-cost high-innovation LED lamp uses saltwater to recharge its batteries! It was designed for neighborhoods with little to no access to electricity. Instead of requiring a traditional power outlet to replenish its batteries, the WaterLight uses a water-activated magnesium battery that causes a reaction when it comes in contact with brine. 

This effectively means the WaterLight can be charged via ocean water, regular saltwater, or in emergency cases, even urine.

The WaterLight is much more efficient than a solar-powered lamp, generating much more energy than a solar panel would. “WaterLight can be more efficient than solar energy lanterns because it regenerates instantly,” said Pipe Ruiz Pineda, executive creative director of Wunderman Thompson Colombia. “Once filled with water, the energy delivery is immediate while solar lanterns need to transform solar energy to alternative energy to charge batteries and they only work if there is sun.”

Almost a billion people have no access to electricity, according to World Health Organization data. That’s roughly 14% of the world that has to live in the darkness for half of the day. This stops them from being able to work and live, and makes it difficult for kids to study past dusk too. 

The WaterLight was designed to help them easily and effectively combat this situation without relying on a power grid. The light comes made from entirely recyclable materials that are water-resistant too. Inlets on the top of the lamp let water flow in, while the LEDs at the bottom provide 45 days of electricity with just half a liter of salt water.

E-Dina in collaboration with Wunderman Thompson

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Edina free electricity generator from salt water