Question answer from swami and friends 6 STD
Answers
Answer:
Rajam is the son of the Police Superintendent and one of Swami's closest friends. Rajam is new to Swami's school at the start of the novel, and initially Swami and Mani view him as an enemy due to his quick wits, fine clothes, and fearless nature.
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Answer:
ok
Explanation:
ok your big and yourPeople in
Europe began
experimenting with
electricity around
400 years ago. They
generated electricity
in different ways and conducted various
experiments. However, they faced one
major problem which prevented them
from understanding electricity in depth.
They did not have a stable and permanent
source of electricity. This may sound
like a minor problem today, but it took
scientists nearly 200 years to find a
solution.
That solution came in the year 1780. And
it came almost by chance. A biologist
named Luigi Galvani from Bologna, Italy,
once saw a frog’s leg hung from a copper hook twitching violently when it
touched another metal. It seemed as if
the frog’s leg had suddenly come to life.
Galvani did many more experiments
with the legs of dead frogs. He finally
came to the conclusion that frog’s legs
twitched every time electricity flowed
through them. Galvani thought he had
discovered living or biological electricity.
He presented his theory to the world,
saying that all living beings contained
electricity and it was this electricity that
was their main source of life.
Galvani’s experiments took the
whole of Europe by storm. Many
scientists began performing similar
experiments with various species of
animals. Among them was Alessandro
Volta of Italy. He, too, performed
experiments with frog’s legs. However,
he discovered that if a frog’s leg hung
from an iron hook is touched with
another iron rod, it does not twitch. Volta
was a bit puzzled..
If the reaction in a frog’s leg is due
to the electricity in its body, why are two
different metals required to make it
twitch, he wondered? After a lot of
thinking he arrived at the conclusion that
electricity does flow through the frog’s
leg when two different metals touch it.
However, this electricity is not contained
in the leg of the frog but is generated by
some other process.
Volta repeated his experiment using
different liquids instead of frog’s legs.
He found that it did not require an
animal’s body to generate electricity. It
is possible to generate electricity if two
different metals are placed in some
liquids.
These experiments showed the way
to a steady source of electricity. Volta
made his first cell in 1800 using zinc and
copper plates dipped in sulphuric acid.
His discovery made him famous in the
realm of science. The cell he made is
called a Volta cell in his honour. The word
voltage is also derived from his name.
People in
Europe began
experimenting with
electricity around
400 years ago. They
generated electricity
in different ways and conducted various
experiments. However, they faced one
major problem which prevented them
from understanding electricity in depth.
They did not have a stable and permanent
source of electricity. This may sound
like a minor problem today, but it took
scientists nearly 200 years to find a
solution.
That solution came in the year 1780. And
it came almost by chance. A biologist
named Luigi Galvani from Bologna, Italy,
once saw a frog’s leg hung from a copper hook twitching violently when it
touched another metal. It seemed as if
the frog’s leg had suddenly come to life.
Galvani did many more experiments
with the legs of dead frogs. He finally
came to the conclusion that frog’s legs
twitched every time electricity flowed
through them. Galvani thought he had
discovered living or biological electricity.
He presented his theory to the world,
saying that all living beings contained
electricity and it was this electricity that
was their main source of life.
Galvani’s experiments took the
whole of Europe by storm. Many
scientists began performing similar
experiments with various species of
animals. Among them was Alessandro
Volta of Italy. He, too, performed
experiments with frog’s legs. However,
he discovered that if a frog’s leg hung