4 inventions 'do not cost 1 cent' but have great significance for the poor

These are solutions that help the lives of the poor become much more wonderful.

One day wake up, you suddenly feel depressed for this life. Bored because of exam pressure, bored with work pressure or bored because people like you naturally have lovers? In general, the feeling of being bored of this world must have many people experienced at least once in their lives.

But slowly. At least you can go to school, get a job, have a person to like, have a home that is comfortable to go back to, you are luckier than millions of people on this Earth.

In the world, there are places where people do not know what electricity is, must walk dozens of kilometers just to bring back a bucket of clean water, or live in places where light cannot reach even in the middle of the afternoon.

Poverty alleviation is a difficult issue, requiring a long-term roadmap. However, many inventors have come up with simple ideas that are very practical, making life of needless lives difficult, becoming much more pleasant.

1. Lamps made from bottle shells

Many parts of the world do not have electricity - this is probably everyone knows. The Philippines' Sitio Maligaya area is such a place.
But this place is not only short of electricity, but slums built very close together, so close that the light cannot reach even in the middle of the day.

To solve this, a group of students at Massachusetts Institute of Technology - MIT (USA) - developed a great project: creating solar-powered lamps with plastic bottles.

The lights use solar energy with plastic bottles.

Project named: A liter of Light - 1 liter of light. The idea is simple: apply the principle of light refraction. When light comes into contact with a interface between two environments with different refractive indices, it changes direction.

If you cut a hole in your house, the sun will only light one corner. Meanwhile, just add a plastic bottle containing water inside, the light will be refracted to many sides, turning a cheap plastic bottle into a proper solar lamp.

These cheap bottle lights can light up to 10 months a year.

According to calculations, these cheap bottle lamps can light up to 10 months a year, with a capacity equivalent to 60W bulbs. As a result, this initiative has been replicated by the Philippines with the project "One liter of light" , installing more than 10,000 bottle lamps, bringing sustainable energy to poor communities in Manila and neighboring provinces. .

2. Hippo Water Roller - makes 9 hours to get disaster water easily

There are hundreds of millions of people in the world who are not exposed to clean water, especially in developing countries in Africa.

To survive, women and children are forced to take water in the traditional way: they move a distance of tens of kilometers each day, putting on a bucket of 20 liters of water. Read here, you probably understand how much time and effort this work is, right?

This device consists of a barrel of 90l water, attached to a steel shaft, turning the water tank into a wheel.

Every day they spend 3 to 9 hours just to get water. Moreover, the team to 20 pounds of water up to the beginning of the day after day is likely to cause damage to the spine and neck vertebrae.

To solve this, African scientists have come up with a very practical idea. It was a very simple device, consisting of a barrel of 90l water, attached to a steel shaft, turning the water tank into a wheel.

The life of a bucket is 5-7 years.

Equipment not only helps people save time and effort, but also helps bring back water to ensure hygiene during transportation. The lifespan of a bucket is 5-7 years, which is extremely effective.

3. Lamps run on salt and water

The idea of ​​a salt and water lamp is given in some waters in the Philippines, where residential areas are not exposed to electricity.

So Salt was born. Salt is a lamp, and what it uses to run is not electricity, but salt - just as its name suggests - and a glass of water.

This battery will activate when salt water enters.

Salt's operation principle is not as simple as using it. Inside Salt is an electroplated battery. This battery will activate when salt water enters, because this solution can be used as an electrolyte.

This lamp can be lit for 8 hours.

According to Aisa Mijeno, the inventor of Salt, this lamp can light up within 8 hours. It is expected that in 2016, Mijeno's organization will provide 600 Salt lamps for Filipinos to use, then mass produce them for sale worldwide.

4. Air conditioning summer rescue from plastic bottles

In Bangladesh, more than 70% of households do not know what electricity is. And to improve the disaster, 70% of the people here are living in corrugated iron roofing houses. As a result, often in the summer, the room temperature in this country hits . 45 degrees C.

To solve this, an advertising company named Gray Dhaka, along with volunteers, came up with an idea of ​​a "conditioner" - rather than a cooler - without electricity , with the name Eco-Cooler.

Eco-Cooler is actually a very simple structure: used plastic bottles are cut in half, attached to a board.

Eco-Cooler is actually a very simple structure: used plastic bottles are cut in half, attached to a board. After that, apply the board to the window and finish! We already have an air conditioner that doesn't need electricity but is extremely environmentally friendly.