science animation has been prepared keeping the curiosity
of the audience, an effort has been made to cover the Sun's
source of energy and the complete mechanism of transfer
of energy from the core to the surface, the box-open notes
at various places inside the animation provide crucial details.
Nuclear fusion reaction
- source of solar power:
Hydrogen nuclei (protons) fuse to create helium-4 and release
energy in several stages:
1. Two protons combine to form a deuterium (hydrogen
atom with one neutron), a positron (similar to electron,
but with a positive charge) and a neutrino
2. A proton and a deuterium atom combine to form a helium-3
atom (two protons with one neutron) and a gamma ray.
3. Two helium-3 atoms combine to form a helium-4 (two
protons and two neutrons) and two protons.
Now, the helium-4 atoms are less massive than the two hydrogen
atoms that started the process. The difference in mass was
converted to energy given by Einstein's theory of relativity
The high-energy gamma ray
photons produced at the core is then transported to
the space by the process of radiative diffusion and convection
and then again by radiation.
During the energy transport mechanisms, the entire gamma
rays in the core are converted into visible, ultraviolet
light, X-rays, visible light, infrared, microwaves and radio
photons producing a continuous (thermal) spectrum.
Thus it is this energy produced by the nuclear fusion
at the sun's core that strikes the earth, provides warmth
to the planet and drives our weather and provides energy
Since Sun has got a vast amount of hydrogen element, it
will continue to produce energy for next billion numbers
of years and is therefore an inexhaustible source of energy