[Music]
it's um sometime hi guys
can you guess the title of my next video
[Music]
hurry up write your guess in the
comments section below what is a black
hole
usually when a star is alive the inward
force of gravity is exactly balanced at
each point by the outward force created
by hot gases and radiation these inward
and outward forces maintain balance and
hold the star together however when the
star runs out of fuel there are no hot
gases and radiation hence there is no
outward force to balance the inward pull
of gravity and thus the star begins to
die the star's core begins to collapse
under its own gravity this collapse
causes the outer layers to blow apart in
a huge explosion called a supernova now
it is estimated that if a star has at
least 20 times more mass than our sun
then the star collapses to form a black
hole the surface or boundary of a black
hole is called event horizon nothing can
escape from within the event horizon of
a black hole not even light hence the
black hole appears black topic human
eyes what are a booger x' they are
similar to burgers
Oh gross no eye boogers generally
contain oil dust germs etc they are
formed from the tear film on our eyes
does the film of any action seems oh no
the tear film mainly consists of three
layers mucin layer aqueous layer and
lipid or oily layer together these
layers moisturize our eye they also trap
dust and germs which are removed while
blinking when we blink the eyelid closes
and if there is any dust or germ it gets
discarded along
some tear film through the tear duct
into the nasal cavity but while sleeping
since we don't blink the tear film dust
and germs get collected in the inner
corners of our eyes and start to dry out
forming eye boogers hmmm how this
placebo effect work I don't know dude
alright I'll explain placebo in Latin
means I shall please and this is what
placebos do placebos are inactive sugar
pills injections
etc that looked like real medications or
treatments in most cases they relieve
pain and make us feel better even though
they are not actual medicines this
effect of placebos on our body is called
the placebo effect now one of the
reasons why placebos are effective is
that when we take them our mind
perceives placebos as a real medications
hence our brain reacts to the placebo in
a manner which is similar to when we
take real medications thus our brain
releases natural painkillers like
endorphins that help relieve pain in
addition to this it also decreases the
production of stress hormones thus
making us feel better
why does airplane food taste bad
I don't know weights I'll explain our
ability to perceive taste is affected by
a few factors such as humidity air
pressure etc in an airplane
the humidity is less as compared to that
on the ground this makes the air in the
airplane quite dry also to maintain the
air pressure inside and outside the
airplane the air pressure inside it is
decreased decreased air pressure and dry
air to rise our nose and mouth dry nose
cannot properly smell odors dad dude I'm
not able to smell the berker now smell
of food helps us to understand the
flavor and ingredients of the food thus
the food which we cannot smell properly
appears unappealing also dry mouth
reduces the sensitivity of our taste
buds as a result we cannot perceive the
taste of
properly topic respiration why should we
not overwater potted plants well duh
it's because the water will overflow and
make the floor dirty now leaves of a
plant taking oxygen from the air present
in the atmosphere while the roots being
buried in the soil taking oxygen from
the air present in tiny spaces of the
soil when we overwater a potted plant
the air in the tiny spaces gets replaced
by water
yikes so do the roots know how to swim
in water
oh please listen as air gets replaced by
water the roots do not get sufficient
oxygen to breathe and they begin to rot
this may adversely affect the growth of
the plant thus we should always try to
supply adequate water to the potted
plants and not overwater them