how long will it take solar energy to work on earth?
398963
Solar power works-it is used in many places.  The question is one of economics, which underlies nearly every human activity, but is one of the least studied fields.  It is expensive, and energy-intensive, to make solar-powered electrical panels-which in any case only work well inbright sunlight.  Solar power is most useful for heating water in individual houses, but again, it isnt economically competitive with coal, oil, and natural gas.  In order for solar power to be widely used, a number of things would have to happen. 1) development of much better electrical storage (batteries, heat sinks, capacitors, etc) 2) either solar power generators would have to get much more efficient or coal, gas, and oil much much more expensive or 3) to concern with greenhouse gases and pollution rise to such a level that people would be willing to pay 5-10 times more for electrical power.
1112253
Photons are produced by the sun in it´s core, because it is only there that fusion takes place. But the plasma of the sun is dense \nand the photon is continuously absorbed and re-emitted during its rise to the surface. Hence the photon will take about a million year to make the trip.\n\nAnd 8 minutes 20 seconds more to travel from the surface to the earth.
1061146
When the upper curve of the sun is on the horizon.  Of course it takes about 8 minutes for sun light to reach the earth and you are looking at 8 minute old sun light.
241716
A solar cell is usually a combination of materials, the photons in the sunlight strips electrons form one layer of materials to the other and moving electrons induces a current. Newer solar cells have multiple layers the work with the different wavelengths of the sunlight to increase the efficiency. Average power of sunlight on the earth is roughly 1000 watts per square meter. SO you can see a solar power station need a lot of room to generate enough power. The encapsulation of the cell to protect the cells also reduces the efficiency of the cells.
1028317
The Solar System is believed to be around 4.5 billion years old. Hence, ignoring any changes in the length of the year, the Earth has orbited the sun 4.5 billion times.
250338
I would guess the sun would be the energy in SOLAR powered anything. Solar = sun
180315
Since space is very close to being a vacuum, the only way energy can travel from the sun to the Earth is through the process of radiation (as opposed to conduction or convection).  Radiation relies on energy traveling in electromagnetic waves through the vacuum and hitting Earth (thus heating the Earth).  In a vacuum, all electromagentic waves, light included, travel at exactly 299,792,458 m/s, this comes out to about an 8 minute travel time from the surface of the sun.\n\nBut your question of "How many seconds does it take for the sun to warm up the earth?" doesnt really make any sense beyond what I just explained.
168576
- The Sun is so large, you could fit over one million Earths inside it.\n- The Sun consumes four million tons of hydrogen every second. Even so, it's so vast that our star has enough fuel to keep it shining for another five billion years.\n- The Sun's energy output is estimated to be 386 billion, billion megawatts. So in 15 minutes our Sun radiates as much energy as mankind consumes in all forms, during an entire year.\n\n- The sun is fascinating ! :)
375923
The sun is a powerful thermonuclear device.  Very little will withstand exposure to sunlight forever.\n\nTypical modern plastic based solar cells will last for 15 to 20 years.  "Glass technology" can be extended to 25 to 30 years.  Premium quality last as long as 50 years and counting.
871717
You can first buy the solar panels and then you get the plans from the Internet and you build such items as solar powered cars, water distillation station, etc..  The sky is the limit with solar power!!
96467
Our Sun will "burn out" in about 4.5- to 5.0-billion years from now.\n\nRight now the Sun is converting hydrogen into helium at a rate of some 600-MILLION metric tons per second. Once this main fuel source is exhausted, the Sun will begin fusing helium, and once that's gone it will "burn" progressively heavier and heavier elements. Each change in fuel will be accompanied first by a diminishment in size, then a period of swelling. Mercury, Venus, and Earth will be consumed. Finally nothing but iron will be left to burn in the Sun, and since the energy required for that is higher than the Sun can generate, it will gradually dwindle more and more in size until it will become what's called a 'white dwarf' star.
189425
It's about 93 million miles. It takes a sunbeam about eight minutes to reach earth once it leaves the sun. The moon, by contrast, is about 240,000 miles away, but I'm not positive about that exact number. I am positive about the sun, though.
588448
Mankind will probably be able to go there, but it is quite far in the future - I'd say at least 20 to 25 years away.  Whether or not interest in doing so continues will depend on what is going on right here on earth, and whether we have the will to spend the money on the project.
413368
Energy demand will keep on increasing. So there will be substitute sources of energy like solar cell and water. A lot of research is going on to make this alternate sources working and cheaper than the conventional ones like mineral fuels.
916850
the earth rotational energy is calculated to be  2.58×10^29 J , thus 0.01 of this is 2.58*10^27J , and this enough for human needs for about  2580000000 years .\n\nand if we asume that the energy decrease the rotational energy by the same portion (0.01%) then the day length will decrease by 14.4 mins.
1185197
Our sun will not explode. It will eventually burn out in about est. 5 billion years. Then, for the next several million years it will swell to a red giant which will possibly engulf the Earth and quite possibly Mars. Then eventually the remainder will be pushed off into space and it will shrink to a white dwarf.
324411
Mean distance from\nEarth 149.6×106 km\n(92.95×106 mi)\n(8.31 minutes at the speed of light) \n\n--\nThe Sun is the spectral type G2V yellow star at the center of Earth's solar system. The Earth and other matter (including other planets, asteroids, meteoroids, comets and dust) orbit the Sun. Different latitudes of the Sun rotate at different rates; a point on the equator takes 25 days to complete a rotation, while a point at a pole takes 36 days. The resultant torsion creates the Sun's very strong magnetic field, which in turn drives the 11-year cycle of solar activity. The Sun accounts for more than 99% of the solar system's mass. Energy from the Sun has supported almost all life on Earth through photosynthesis since the appearance of the first organisms. Humans use sunlight for eyesight, warmth, growing crops, and powering solar cells.\n\nThe Sun is a ball of plasma with a diameter of 1.392 million km (864,950 mi) and a mass of about 2.0×1030 kg, which is somewhat greater than that of an average star in the Milky Way galaxy. About 74% of its mass is hydrogen, with 25% helium, and the rest made up of trace quantities of heavier elements. The Sun is about 4.6 billion (109) years old and is about halfway through its main sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. About 5 million tons of matter are converted into energy within the Sun's core every second, producing neutrinos and solar radiation. In about 5 billion years, the Sun will evolve into a red giant and then a white dwarf, creating a planetary nebula in the process.