Actually, since light is the universal speed
limit, nothing can travel faster than it.
However, as radiation travels in the form of
light, the waves carry energy at constant,
light speed. This cannot be changed as it
moves, however, one can change the direction of
light in a medium. Let's think about this with
light in water. The light looks deformed because
the light particles are bouncing around the
molecules in the water and coming out the other
side. The scattering off individual water
particles makes the light go in different
directions and this motion is slower than the
light moving straight through the water.
If we are able to use a medium, such as a
highly dense fluid, that deflects light enough
when it is shot through, then virtually no light
will pass the medium. We can apply the same
reasoning towards radiation, and say that if we
had a properly dense enough material, we could
deflect the effects of radiation coming out.
However, since we are talking about protecting
Earth, it may be a little tougher, as this medium
would have to be very dense and sit in the upper
part of our atmosphere. If there were a dense
film surrounding the Earth, we would theoretically
be protected from effects of radiation.
As for the second part of your question,
chemical energy can be converted into
electrical energy, and this is how a battery
generates power. Chlorophyll use the process
of photosynthesis to produce energy. This process
is an oxidation-reduction reaction in which the
electrons travel from water to CO2
molecules, creating a flow of charge within the
plant. This flow of charge is what produces
high-energy glucose, and if a battery was
connected to the flow, we could harness the
chemical energy by reacting it with the electrodes
in the battery. This chemical reaction would
include the battery in the flow of charge,
powering other processes intended with the saved
Hope this answers your questions!
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