Energy from the Sun

[MrBOB39]

Very Good Video by the way

[MrBOB39]

hey loqiloqi...your statment is wrong a couple of ways..

rosenburg bridge (allowing/enabling faster then light travel in a way one need not go faster then C.. Also..many things travel faster then speed of light (unknown & un-realized to Einstein at the time)

[v4rcrazy1]

Greetings.....its really a great video....i have problems in calculating temperature rise with respect to watts.....if you dont mind plz help me out in figuring the problem....

[tostrong4you]

Awesome video

[trailkeeper]

At about a tenth of a watt (0.1 W) per square centimeter it will take about 10 square centimeters to have 1 watt of energy. A square that size is about 3.16 (the square root of 10, about 3) centimeters long on each side which is about one and a quarter (1.25 in ) inches long.

[Lineriderrocks123]

I thought E=mc^2 said that anything that travels faster than the speed of light becomes energy.

[loqiloqi]

@Lineriderrocks123,

Nothing with mass can go faster than or equal to the speed of light. As a particle approaches light speed, it takes progressively more energy to accelerate it, and infinite energy to push it to exactly the speed of light.

E = mc^2 lets us compute how much energy an object with mass is "made out of". A small amount of matter can annhiliate to release a large amount of energy. For example, nuclear fission or fusion causes a reduction in mass and a release of energy.

[timonix2]

@loqiloqi E = mc^2 does not say that it takes infinitive energy to accelerate an object to light speed... E = (mc^2)/sqrt(1-v^2/c^2) does though. where E is the energy, m=mass, c=speed of light and v=velocity of the object. There are similar functions for many other things as well. such as time.

[Animalvader1]

@Lineriderrocks123 An easy way to remember what E=mc^2 is meant for is to read it with the words instead of the letters: Energy=Mass times the square route of the Speed of Light. While the speed of light (rounded up to 300,000,000 meters per second) is part of the equation, it's still used to find the energy out put of annihilated matter. If you google "e=mc2 explained", you'll find an easy, but detailed article on what E=mc^2 means and how it works. Hope that helps.

[dmacosta1]

very nice video

[jonce81]

Nice... Hope it doesn't take too long for your next video(s)..

[cristoretornebiblia]

Can anyone tell me if we installed solar panels in the Sahara Desert could this produce enough electricity to supply the entire earth?

[RestauranteChines]

@cristoretornebiblia It could. But that energy could not reach every person in the world because you can't carry electricity that far.

The same goes if you build geotermal generators in Hawai and it would be much less expensive ;-)

[cristoretornebiblia]

@RestauranteChines Thanks for your reply, so how do we transport electricity from different country, surley we can store them in big Capicators?

[MrGGGGIO]

@cristoretornebiblia

The area of Sahara Desert is 9 100 000 km^2

-> amount in square meters - [9.1x10^12 m^2]

as the video says our planet receives 1100 W/m^2 (7:15)

--> 9.1x10^12 * 1100 = 10 010 (terawatts) :O

Yes, it's unbeleavable and impossible

[didierlassus]

very nice video

[d3adp001]

517,426,273,458,445,040,214,47­7.21179625 horse power from the sun

140,511,914,900,262,400watts=p­ower to earth per second or

188,353,773,324,748HP or

21,617,217 barrels of oil per second

1.56 grams to the earth

4,294,829,216 grams total (this seems high to me but hey)

[Renuzitus]

I love these videos.

[UserIsAnFBIAgent]

Very Good Video. I am now smarter because of your video, and your know how.

Thank you.

[mycompasstv]

great learning videos, thank you. 

[cool70200]

Very nice, thanks.

[TheMick26]

Very simple, elegant description!

Thanks for sharing!

[ashthegreat]

Very good! Works very simple.

[neoaeonian]

I think I once saw that the sun's energy was first calculated by the speed at which ice melted in the sun. Regardless, it is an amazing amount of energy. 10 100 Watt lightbulbs for every square meter. With those kinds of numbers I'm suprised we haven't been able to convert entirely to solar energy by now.

[adolthitler]

@neoaeonian Fossil fuels are solar energy stored in chemicals.

[PlanetoftheAtheists]

@neoaeonian when you live in a world utterly controlled by the energy industry....it's a bit tough to change

[GunShard]

Interesting.

[joelito101]

I wonder how much wattage is required to separate Hydrogen and Oxygen from water? 1100 Watts / m^2, sounds like all we need to do is use that energy and convert it to usable energy.

[Xeonveridan]

@joelito101 Hydrogen gas isn't hard to make, but hydrogen gas is very inefficient because it has a massive volume/energy ratio. It's having to compress hydrogen down to a liquid- which has the same energy, but less volume- that takes so much energy.

[DrEnzyme]

There's an interesting TED talk related to this. Basically, it was saying that if we were able to convert a swimming pool sized amount of water into hydrogen and oxygen every second (using the sun!) we would be able to solve the world's energy problems.

[Peacenik]

That's a lot of energy. No wonder the sun is so hot.