Difference between revisions of "Electricity"
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For some settlement applications electricity can not be avoided. This is true for [[radio link]] and night time lighting. | For some settlement applications electricity can not be avoided. This is true for [[radio link]] and night time lighting. | ||
− | + | Karen,I don't know if there is or will be a labor shortage or not. I beevlie there is one and it will continue.I do not find your reasoning to be very sound. First, just because 69% of the 50-70 population wish to continue working they will not find comparable employment. Age discrimination is alive and well. They will be employed as Wal Mart greeters or independent consultants. There is and will be a shortage of qualified managemnt talent.Your assumption that spending weakens with age is wrong. Spending changes with age. Health care and assisted living becomes a larger share of elderly spending giving rise to employment in health and age related fields.Your view of the credit crunch and housing in particular are very short-sighted. Go back to 1980 and plot a line for total house sales and you will find that going out to a projected 2010 number will follow a pretty straight line. We have just come through a once in a liftime housing bubble. Current slaes levels are still above the 25 year average. Also the population is holding staedy and rising slightly. We are the only developed nation with replacement level birth rates among the native popultion (excluding immigrants) and whem you add in immigration (legal) we have a robust population growth. Immigrants on average purchase a house after being here 10 years. Each of the last three decades has seen increasing levels of immigration in excess of 10 million people each decade. When you factor in housing that needs to be replaced and increasing household formations due to lifestyle changes the housing market will recover by early next year and will add to the economy. Also the commercial building market both private and government is doing very well and will continue to do so.I won't go on but I would like to suggest that you leave economic analysis to the economists and write about what you know best, current employment market condidtions.Respectfully yours,Ed Zenzola | |
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==See Also== | ==See Also== |
Revision as of 08:17, 29 October 2012
Electricity is the most versatile kind of energy used on Earth. It plays an important part in almost every modern technology. Electricity can be transmitted easily over a distance via cables. It can be transformed into several other energy forms. A settlement on Mars can hardly be imagined without electricity.
Contents
Generation
Electrical energy can be produced directly in several ways.
Photovoltaics
The conversion of photons to electricity.
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Thermoelectric Generators
A thermoelectric generator produces electricity from differences in thermal energy between two or more areas.
Piezoelectrics
Piezoelectricity is the generation of electricity as a direct result of mechanical deformation.
Electrochemistry
Direct current can be pucdroed from solar energy.Solar cells are also called photovoltaic cells. Solar cells convert the light into direct current electricity, which is the same kind of electricity you would find in a standard battery. Once the energy is converted to electricity, it can be stored in a battery or sent through an inverter which changes the electricity to alternating current, the type of electricity that powers everyday electric items.
Significance for a Martian colony
Inevitabilities
For some settlement applications electricity can not be avoided. This is true for radio link and night time lighting.
Karen,I don't know if there is or will be a labor shortage or not. I beevlie there is one and it will continue.I do not find your reasoning to be very sound. First, just because 69% of the 50-70 population wish to continue working they will not find comparable employment. Age discrimination is alive and well. They will be employed as Wal Mart greeters or independent consultants. There is and will be a shortage of qualified managemnt talent.Your assumption that spending weakens with age is wrong. Spending changes with age. Health care and assisted living becomes a larger share of elderly spending giving rise to employment in health and age related fields.Your view of the credit crunch and housing in particular are very short-sighted. Go back to 1980 and plot a line for total house sales and you will find that going out to a projected 2010 number will follow a pretty straight line. We have just come through a once in a liftime housing bubble. Current slaes levels are still above the 25 year average. Also the population is holding staedy and rising slightly. We are the only developed nation with replacement level birth rates among the native popultion (excluding immigrants) and whem you add in immigration (legal) we have a robust population growth. Immigrants on average purchase a house after being here 10 years. Each of the last three decades has seen increasing levels of immigration in excess of 10 million people each decade. When you factor in housing that needs to be replaced and increasing household formations due to lifestyle changes the housing market will recover by early next year and will add to the economy. Also the commercial building market both private and government is doing very well and will continue to do so.I won't go on but I would like to suggest that you leave economic analysis to the economists and write about what you know best, current employment market condidtions.Respectfully yours,Ed Zenzola