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The most efficient candy, of course, would be pure powder. Also new at the time: the innovative packaging. That combination of foil and paper was designed to “weatherproof” the candy. Before this special wrapping (which Life Savers still use today, a full century on), kids would walk ...
This is a ship with an amazing history. She was built in 1943 with only one purpose: transport ammunition and fuel from England to France to keep the allied war machine going and win the war. Just after the war, in 1951, she ended up in Amsterdam where she could take it easy. We ...
curved mirrors reflecting the sun and focusing its heat on the cooking element.This apparatus can be used just like a gas or electric stove; it is more expensive to make but it does not need any fuel,and so costs nothing to use.Another possibility of using solar energy is in house-...
under way to make those efficient.Another interesting development is electric induction stoves(电磁炉).WHO experts note some new,safe and low-cost technologies that could help are already available.In India,you can bay an induction stove for about 8.00.AndinAfricayoucanbuyasolarlampforlessthan1.00...
b. The cost of evaluating the most efficient placing of cell towers would have to be lower than the cost of the repairs to the cell towers during the previous year. c. The cost of covering the towers with the better type of steel would have to be lower than the cost of the repairs ...
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They have an opening at the bottom for the fire and a place on top to put a pot. In the late 1970s, Aprovecho produced a popular stove called the Lorena. The Lorena was good at reducing smoke and warming homes. But new tests years later found that it was not efficient. The used tw...
a clean, fuel-efficient stove. The Berkeley---Darfur Stove he created saves 55% of fuel. That means the women wouldn’t have to leave the houses to find firewood as often. The invention also helps to save homes more than $300 a year. About 125,000 women and their families have been...
Interval training can be done either on the road or a home trainer. Indoor training is a great way to supplement your on-road riding in poor weather and is very efficient for a few reasons. The most important being that it’s a focused session. On the trainer, you don’t stop for tr...