How do we get light energy from the sun?

Answer 1

The energy pathway from Solar System star, the Sun, to an incandescent, fluorescent and or LED bulb can be traced. The Sun emanates electromagnetic waves as light photons. Solar panels convert this into electron streams. Electron streams, or current, flow through elements to emanate visible light.ÊÊ

Answer 2

You could use a wattmeter (a device that measures the electrical voltage and current to determine and display the power used by the lightbulb). That would tell you how much power (energy) is dissipated by the lightbulb and radiated as light and heat. This Is Usually Measured in LUX.

Answer 3

50% of the electricity in the united states is produced by burning coal. Let's go backwards from the elctrical energy which enters your house and can be converted into various types of energy for use in your house. The electricity was produced by spinning a magnet inside a coil of wire or spinning a coil of wire inside a round magnet. This takes mechanical energy. The mechanical energy is provided by steam which turns a turbine which is connected to the magnet or coil to make it spin. The steam is produced by water being super heated. That's thermal energy. That thermal energy is produced by burning the coal. Coal is a rock that was formed by compressed plants that died millions of years ago. Energy from those plants was stored in the coal. And plants get their energy directly from the sun. Chlorophyll in the plans allow them to use light from the sun to produce sugar from carbon dioxide and water in a process called photosynthesis. The light energy from the sun is radiant energy. But that's not the beginning. That light from the sun was released at the sun's surface, after the energy traveled for millions of years from the core of the sun. The core of the sun is a very hot, high pressure place. Particles are moving so fast and under so much pressure that they get crushed together to for new elements. When two nuclei of atoms combine or fuse, it is called fushion. And this fushion is an example of nuclear energy. I guess we could trace it back further, but you wanted to know about the sun. And we would have to go back billions of years more to find that source of energy. But here are the lessons. Energy is never created or destroyed, only changed. So all the energy we have now, had to come from some where, and will just be converted into other forms as we use it. Most often, it is converted into heat. Also, every time one form of energy is converted into another some of it is lost as heat (sometimes most of it). For example, of the energy from the food you eat, 95% of it gets converted to heat to keep you warm. Only the other 5% is useful for things like moving, thinking, breathing, and typing this answer. In most cases, heat energy is not useful, so it's wasted. Now think about all the changes that had to happen to convert the energy in the core of the sun to electricity to run your computer. Look at how inefficient coal powered electricity is, and how much more efficient solar electrcity would. In that case, we can convert the light from the sun directly into electricity. One step! Hope that helps.

Answer 4

That depends on how the electrical energy is generated. Here is one example: The Sun makes water evaporate; when it rains on a continent, it has higher position, and thus higher potential energy, than in the ocean. This potential energy makes turbines move; these move generators, that convert the potential energy into electrical energy.

Answer 5

it is transformed into chemical energy in the form of sugar

Answer 6

The lamp must incorporate a solar cell to get charged through solar energy.

Answer 7

Exactly the same way it travels from the sun ... in the form of

electromagnetic radiation, which is really the only way for light

to travel, because that's what light IS.

Answer 8

sun water dam light bulb