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Water Bottles to Illuminate a Million Homes

In Manila, the capital of the Philippines, lack of electricity keeps millions of the city’s poorer inhabitants in the dark. Metal rooftops on the city’s slum houses also block natural daylight, but students from the Massachusetts Institute of Technology have found a cheap and elegant solution to the problem: plastic water bottles.

By filling a plastic bottle with water and bleach (to prevent algae from growing), students and residents can fashion a solar lamp that fills even the gloomiest shelters with light. It works thanks to phenomenon you may have learned in physics class – refraction. When sunlight passes through the bottle and hits the water, its rays bend and disperse in many different directions.

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Naval Architecture and Marine Engineering

Engineers are responsible for building planes, trains, and automobiles, but what about those who are more aquatically inclined? Budding Captain Nemos may want to consider pursuing Naval Architecture and Marine Engineering, a field of study dedicated to the design, construction, and maintenance of ships.

Since we haven’t mentioned this particular engineering discipline on our blog before, we’d like to take a moment to provide our readers with a brief overview of what it’s like to be a naval architect and a marine engineer.

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