Energy from the Sun

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With some very simple equipment and knowledge of basic math it is possible to estimate the power output of the sun.
This video describes the process and explains the calculations. The video leaves a challenge, use the results to calculate the total energy arriving at the earth each second and using E=mc^2, calculate the mass loss of the sun.

Category:

Education

Tags:

• sun
• energy
• Joules
• Watts
• Physics
• mathematics
• area
• of
• sphere
• photovoltaic
• passive
• solar
• biomass
• heat
• thermal
• nuclear
• fusion
• fission
• E=MC^2

[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.

[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....

[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.

[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.

[cristoretornebiblia]

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

[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.

[Lineriderrocks123]

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