Q. & A.s ‑‑‑ SCI.
& TECH. – 16
425Q. What is XNA?
XNA
means an artificial genetic material.
This XNA (xeno-nucleic acid) was
reported to be capable of replication in the test tube much like real DNA.
426Q.
What is the difference between yagnam and yagam?
In yagnam
there is burning of ghee, grain, etc.
In yagam
the is slaughter.
1.
Rajasuyam = killing one male and
one female from each species and throwing them into fire on the name of
puja.
2.
Naramedham = in this a young boy is slaughtered at the end of puja
and thrown into fire.
Eg. Sunssepa who was made balipasuvu was saved by Viswamitra
3.
Vajapeyam = in this a goat or goats sacrificed at the end of puja.
4.
Ashvamedham = in this a horse is worshipped and left it out to
wander across lands. If any king catches hold of this, then he has to fight
against the sender. If the horse is not caught, that means the owner of the
region accepts the supremacy of the sender.
Eg. Rama sent ashvam which was caught by Lava and Kusa
5.
Poundareekam = one young male and one female are selected for this.
They both perform dance naked in front of all the public, do intercourse, and
complete the puja.
427Q. What
is Pioneer X ?
It is believed that in our galaxy its
self there are at least 3 civilisations. Where they are located? how do they
look like? Etc are not known.
So scientists had sent Pioneer X, a
space satellite in 1974. It crossed the
solar system in 1984.
If it will be caught, if the beings will
be more intelligent than us, they open the satellite, and find from where that
is sent. There is gold flake. On top of that man and female figures are
engraved. By seeing that they may understand us.
428Q. When you descend in a giant wheel
you get fear. Why?
It is because of loss of weight.
429Q. Today’s North will not tomorrow’s
North. Why?
Earth
has oscillating motion. It oscillates 47o. It takes this in a year.
That is why whatever today’s North changes the next day.
430Q. what is the difference between GN
[geographical north] and MN [magnetic north]?
GN is formed on the extreme north point.
MN is formed due to Earth’s magma’s
rotation.
The difference between these is 17o.
431Q. Why the poles are formed in North
and South directions, but not in East and West?
The
rotation of the Earth is from West to East. 90o to that is North and
South. That is why poles are in north
and south directions.
It
is because, the ionized sate of matter of magma rotates from west to east.
Magnetic field is created in north and
south directions.
432Q. what is time?
The angle of sun ray falling on the earth is
called time.
433Q. what is time reversal theory?
It
was proposed by Albert Einstein in 1900.
Any
object travelling faster than earth’s rotation, that object can fly ahead of time. That is why time goes
back.
Eg., Concorde. This plane used to travel at
2500 kmph. Earth’s rotation is 1600 kmph.
Before
light ray can reach the next place of destiny Concorde used to travel. This was
proved in 1960.
434Q. what is pseudo gravity?
It
is used in space ships to provide artificial internal gravity directed towards
centre of the ship.
Space
ships are spherical with pseudo gravity system in the centre.
It
has special generators.
No
ac celebration is felt inside when spaceship is accelerated.
It
is limited to LSA of the SS not far.
People
in space ship live normally, otherwise they will be hanging.
435Q. If we stand on North pole itself
what direction will the magnet show?
If we stand anywhere on earth the compass
shows the north and south directions. If
we stand on the north itself, compass doesnot show any direction. That time
people use Gycoscope.
436Q. Why the value of “g” differs from
planet to planet and star to star?
The value of g depends on
1.
The volume of matter
2.
Rotation speed
3.
Plasma present
437Q. What is inclination?
When a bar magnet is suspended freely on
equator, it lies horizontally towards the poles. If the magnet is brought near
towards a pole, it tilts making an angle. As the magnet is brought near to the pole of the Earth, the opposite
pole of the bar magnet makes 90o at the pole. This is called
inclination.
438Q. Why does a top rotating on its
needle stands erect?
It is due to artificial gravity.
439Q. what is the basis for magnetic
property?
The interior of the Earth has magma. It
rotates at 1600 kmph. Its state is plasma. The ionised state of plasma when rotates, magnetic field is
created at its 90o.
440Q. What is escape velocity?
When an object should fly away the planet,
it should have velocity higher than the g value. Then only it can escape. It is
called escape velocity.
441Q. Why does the escape velocity of an object change from planet to
planet?
The escape velocity changes from planet to
planet because the g value changes from planet to planet.
Eg. The earth has g = 9.8 m/sec2 so
its escape velocity is 11.2 kmps.
442Q. Can you create a monopole?
No.
443Q. What is magneto therapy?
Using magnet if disorders of some parts of
body can be rectified it is called magneto therapy.
444Q. What is GMT?
During the imperialistic times, the British
used to rule nearly 54 countries. The whole world was not having a common
measure of time. That was why the longitude passing through Greenwich Village
was taken as 0o and time is calculated. Accordingly the times of other
places were counted.
445Q. How does North show North?
Earth’s north is in the south. The north of
compass shows the south.
446Q. Why vastu north is wrong?
1.
Vastu is not same all over the
world.
2.
Vastu depends on climatic
conditions, wind directions, etc.
3.
How can a stone or cement can
decide the fate of human being.
4.
India has irregular shapes with
regard to vastu…
5.
If we search for correctness in
incorrect land how far it is correct?
447Q. Why IST?
It is a large country.
From west to east there is a time gap of
three hours.
That means if it is 3AM in Gujarat it will
be 5 AM in Arunachal Pradesh.
If with in a country there are so many time
zones, for various purposes there will be many problems such as Railways, air
crafts, channel transmission, etc.
To avoid this, whatever is the time on 82 1/2o
longitude is applied to the entire India.
That means the time on this line will be at exactly at 4 AM.
That time is applied to entire India.
This is called IST.
448Q. What is artificial moon?
A satellite which has a saucer like base of
62meters dia. is placed in geostationary orbit. On this the sun’s heat falls
for 24 hours except few minutes. This saucer like dish reflects the light of
sun falling on it. It works like a Moon. This
moon is called artificial moon.
449Q. when will sun die?
Inside sun nuclear fusion reactions go on in
millions. The energy liberated is the energy that we receive. After some time
if the hydrogen gas needed for fusion reaction is over, that is the death of
the Sun.
450Q. A stone sinks but a ship floats.
Why?
When a ship floats in water it displaces
certain amount of volume of water. If that much of water is collected in a
plate of balance and the ship in another plate are placed and weighed then the
weight of the water is heavier than the ship itself. That is why ship floats.
In the case
of a nail it is reverse. That is why nail sinks.
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