energy for grinding grain spread rapidly through the Middle East and was in wide use long before the first windmill appeared in Europe. Starting in the 11th century A.D., European Crusaders brought the concept home with them, and the Dutch-type windmill most of us are familiar with was ...
One of the main causes of pore enlargement is excess oil productionpermanent hair removal. When your skin produces too much oil, it can clog the pores and make them appear larger. Additionally, as you age, your skin loses elasticity, which can cause the pores to stretch and become more not...
In fact, most of the things we do every day and much of the stuff we use owes a hidden debt of gratitude to these gigantic energy factories, which turn "fossil fuels" (coal, natural gas, and oil) into electric power. This energy-alchemy is a pretty amazing trick—and quite a recent...
If we triple the time and examine a period from 1850 (Fig.2) we can distinguish two very distinct periods: the time from 1850 to the end of World War I and from the end of World War I to today. In each period the prices stayed more or less constant over the long run. The graph...
Electric engines impact the environment both directly and indirectly at a micro and macro level. It depends on how you want to perceive the situation and how much energy you want. From the individual standpoint, electric cars don’t require gasoline to run, which leads to cars with no emissio...
However, it would be nice to have at least a little electricity, since so much of life in the 21st century is dependent on it. One thing I noticed right away about my property is that most of the time, the wind is blowing. Almost from the moment I bought it, I had the idea of...
Wind is seasonal, wind is dependent on storms and wind is variable and changeable -- much more so than human behavior. But it is possible that wind could become one part of a portfolio of alternative energy resources that could someday replace more traditional coal, natural gas and oil ...
However, fossil raw materials take millions of years to form, and just a matter of minutes to burn. The equation didn’t make sense, and we realized – nearly too late – our folly. “A little blip in the grand scheme of human history” While the fossil oil and gas era may now seem...
What is a turbo and how does a turbo work? If you go back to your childhood you probably remember those windmills sold at the seaside. Now imagine a windmill with 2 propellers back to back. As the wind blows the first propeller a shaft turns the second one and it will blow air in ...
Some points to consider: Q: How much energy is contained in one liter of diesel? A: 10 kWh. Q: How many kWh does it take for a diesel car to drive 100km? A: 6 liters of diesel, or 60 kWh. Q: How far can an electric car drive on 60 kWh? A: 400km When calculated into...