Solar Power

A solar cell is not an energy source, but an energy converter. In the case of solar, the energy source is light, and the solar cell converts it from light energy to electrical energy.

This is not necessarily true. In reality there is no straight answer to which is best. Each have advantages and disadvantages. Just because solar power is used more domestically does not mean it is the most effective and certainly does not mean it produces a lot of energy. Most solar panels are, at best, 40% efficiency and large installations only generate enough power because there is a lot of panels / reflectors and they collectively generate power. In general solar panels are the cheapest alternative, at least for a house, with 2.2KW systems costing $18,000 approximately, with even cheaper smaller systems out there. But lets be honest, the only reason they are seen more on the roofs of houses is because it would be impractical to put a conventional power plant there. Most people do not have enough room for anything else. So solar energy is not actually the undisputed best alternative source of energy. Its all a matter of perspective.

Solar energy is converted into usable electricity through solar panels which contain photovoltaic cells. These cells capture sunlight and convert it into direct current (DC) electricity. An inverter then converts the DC electricity into alternating current (AC) electricity that can be used to power homes, businesses, and other electrical systems.

A source of energy is a physical system or substance from which energy can be extracted or converted. Examples include fossil fuels (such as coal, oil, and natural gas), renewable sources like solar and wind energy, and nuclear power.

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy and heat between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes. Engineers also consider the transfer of mass of differing chemical species, either cold or hot, to achieve heat transfer. While these mechanisms have distinct characteristics, they often occur simultaneously in the same system. Heat conduction, also called diffusion, is the direct microscopic exchange of kinetic energy of particles through the boundary between two systems. When an object is at a different temperature from another body or its surroundings, heat flows so that the body and the surroundings reach the same temperature, at which point they are in thermal equilibrium.

Energy is typically lost through processes like heat production or friction during energy transformation. This loss occurs because no energy conversion is 100% efficient, meaning some energy is always converted into forms that are less useful. This is known as the law of conservation of energy.

Yes all metal foils reflect heat (and other electromagnetic radiation: light, radio waves, etc.).

1 hour = 3,600 seconds
9 hours = 32,400 seconds

Power = E I = (0.45 x 0.018) = 0.0081 watt = 0.0081 joule per second

Energy = Power x time = 0.0081 x 32,400 = 262.44 joules

You may be talking about a lamp which has the symbol ( unable to show ) like symbol omega with a circle . Any piece of metal which heats will emit light

One of the big disadvantages of solar power is that it only works when the sun is shining. People who are "off-grid" and get all of their electricity from solar panels can store their power in batteries, however, so that they can use this power when it's rainy.

Measurement Units:

The measurement of the power of sunlight emitted from the sun is called Radiant Flux and is measured in watts. The measurement of the perceived power of sunlight is called Luminous Flux and is measured in lumens. Lumans are directly related to candelas (or candlepower), which is the luminous intensity emitted in any one direction. Measurement Methods: Surprisingly, luminosity is still often measured by eye. Another popular method is by measuring the current emitted by a photovoltaic cell.

http://en.wikipedia.org/wiki/Radiant_flux http://en.wikipedia.org/wiki/Candlepower http://en.wikipedia.org/wiki/Lumen_(unit) http://en.wikipedia.org/wiki/Luminous_flux

Heterotrophs use glucose as a food molecule to make energy through a process called cellular respiration. Glucose is broken down in the presence of oxygen to produce ATP, the primary energy source for cells.

A solar dryer is a device that uses solar energy to dry food, crops, or other products without the need for electricity or fossil fuels. It typically consists of a box or chamber with a transparent cover to capture sunlight and an airflow system to remove moisture from the material being dried.

While solar power has many advantages to offer, you must first make some ethical considerations to determine if implementing a solar power system has more advantages over disadvantages. You must consider whether the system will impact the natural habitat of wildlife in the area or if the lives of people living in the area will be disrupted.

The most common metal used in solar panels is silicon. Silicon is a versatile material that can efficiently convert sunlight into electricity. Other metals, such as copper, silver, and aluminum, are also used in the construction of solar panels for wiring and structural components.

Wind power is not a type of solar energy. Wind power is generated by harnessing the kinetic energy of moving air, while solar energy is derived from capturing sunlight and converting it into electricity. Both are forms of renewable energy, but they are distinct sources with different mechanisms of generation.

Plants use the energy from sunlight to convert Carbon dioxide and Water into sugars which they then store as starch. When plants die some of them are preserved over a long period of time as fossil fuels such as coal, oil and natural gas. These fossil fuels still contain the stored sunlight energy which was originally trapped by the plants millions of years ago.

BP Solar, Kyocera Corp, Nanosolar, SunPower Corp, have manufacture in the US. The trade association for solar energy in the US is SEIA (Solar Energy Industries Association) http://www.seia.org, this website should give you more details

Chlorophyll is the molecule in a blade of grass that captures solar energy during photosynthesis.

Gettering in solar cells is a process used to remove impurities and defects from the silicon material used to make the cells. This helps to improve the efficiency and performance of the solar cells by reducing recombination of charge carriers. Gettering can be achieved through different methods, such as phosphorus diffusion gettering or wafer bonding gettering.

On a sunny day, one square foot of photovoltaic solar cells can generate around 10-12 watts of power. However, this can vary depending on factors such as the efficiency of the solar cells, the angle of sunlight, and any shading that may be present.

If by unit we are asking about a watt, he cost for the panel is about $3.00 a watt. Double this price for installation.

The cost of a kilowatt (1000 watts) from your local utility is about $0.10 or $0.0001 per watt.

This means you need to use the panel for 6000 hours to break even. Typical sunlight in Wisconsin averages two hours a day and you get about 75% efficiency from a panel. This means you need to run the panel for 4000 days to break even. Typical panels last about ten years. Their life is determined by their breakdown in sunlight.

You could charge batteries directly from the cells if they are wired together right. Cells in series and parallel to make power is tricky business. It would help if they were identical but they are not. Now PV power management systems get the most out of all cells all day long.

No, solar energy for calculators is typically harnessed using small solar cells built into the calculator. Solar satellites, on the other hand, are used to capture solar energy in space and then convert it into electricity for use on Earth, often on a larger scale for powering homes and buildings.

When light hits an object, it can be transmitted (pass through the object), absorbed (taken in by the object), or reflected (bounced off the object). The color of the object we see is the result of the wavelengths of light that are reflected off the object and into our eyes.