WHAT IS THE CONCEPT OF LAUREL AND YANNY ???

      TOPIC :- FREQUENCY

      WHAT IS THE CONCEPT OF LAUREL AND YANNY ???

DO YOU HEAR LAUREL OR YANNY ????

listen from this site 

https://www.vocabulary.com/dictionary/yanny

IN THIS CASE SOME PEOPLE HEAR LAUREL WHILE OTHER HEAR YANNY . IT IS ONLY BECAUSE OF VARIOUS FREQUENCIES.

SOME PEOPLE HAVE GREATER HEARING POWER TO HEAR SOUND OF HIGHER FREQUENCIES....

WHILE OTHER HAVE LOW HEARING POWER TO HEAR SOUND OF HIGHER FREQUENCIES...

IN THIS AUDIO CLIP THE  HIGHER FREQUENCY

  SOUNDS YANNY.... WHILE THE LOWER  FREQUENCY SOUNDS LAUREL..

SO IF U HAVE GREATER HEARING POWER TO HEAR THE SOUNDS OF HIGHER FREQUENCIES THEN YOU WILL HEAR YANNY...

WHERE AS IF U HAVE LOWER HEARING POWER TO HEAR SOUNDS OF HIGHER FREQUENCIES THEN YOU MIGHT HEAR LAUREL...

BUT IF SOME ONE IS TOO OLD THEN HE  MAY BE LOOSE THE POWER OF HEARING  HIGHER FREQUENCIES.. SO THE CONCLUSION FOR OLD AGED PEOPLE IS THAT THEY MAY HEAR LAUREL...

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WHAT IS NEWTON’s 2ND LAW OF MOTION ????

TOPIC :- NEWTON’s  LAW

WHAT IS NEWTON’s  2^ND LAW OF MOTION ????

Acc. TO THIS LAW , THE RATE OF 

CHANGE OF LINEAR MOMENTUM  OF

A BODY IS DIRECTLY PROPORTIONAL  TO THE 

EXTERNAL FORCE APPLIED  ON THE BODY ...

AND THIS CHANGE  ALWAYS TAKE PLACE IN THE 

DIRECTION OF THE APPLIED FORCE .....

THIS LAW IMPLIES THAT WHEN A 

BIGGER FORCE ...

IS APPLIED ON A BODY OF GIVEN MASS , ITS LINEAR MOMENTUM CHANGES OR VISE – VERSA....

THE MOMENTUM WILL CHANGE IN THE DIRECTION OF APPLIED FORCE. TO UNDERSTAND IT FURTHER SUPPOSE THAT.

m = mass of a body

V = velocity of the body

The linear momentum of the body -> P= mv

Let F be the external force   applied on the body in the direction of motion of the body.

P = a small change in linear momentum
      t = a small change in time

1.       rate of change of linear momentum = 

So by 1^st eq. of motion= v-u ÷ t

If the value of k = 1

                          F = ma

which have more mass it will produce more acceleration .

And whose mass is less it will produce less acceleration..

If u want to see the next part of this video i.e. Newton,s 3^rd law 

of motion then...

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HOW BLACK HOLE IS FORMED???

                    TOPIC :- BLACK HOLE

         HOW BLACK HOLE IS FORMED???

Before we start we have to know what is a black hole ????

A BLACK HOLE IS AN AREA IN THE SPACE FROM WHERE NOTHING CAN ESCAPE – NOT EVEN LIGHT CAN ESCAPE FROM IT...

BECAUSE THE GRAVITATIONAL FORCE  THAT PULL OBJECTS IN SPACE TOWARD THE BLACK HOLE  IS VERY STRONG...

Acc. TO SCIENTISTS  STELLAR BLACK HOLE FORM WHEN THE CENTRE OF A VERY MASSIVE  STAR OF ABOUT 20 TIMES OF THE SUN STARTS COLLAPSING ON ITSELF..

THIS COLLAPSING LEADS TO A HUGE EXPLOSION CALLED SUPERNOVA....

SCIENTISTS THINKS THAT SUPERMASSIVE BLACK HOLE IS ONLY FORMED AT THE CENTRE OF MANY GALAXIES ...

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WHO CAME FIRST A CHICKEN OR AN EGG ???

                Topic :- variation and mutation

WHO CAME FIRST A CHICKEN OR AN EGG ??? 

EGG LAYING ANIMALS LIKE :- crocodile snake and frog etc.

Are there for many times. SO WE CONCLUDE THAT ANIMALS CAME FIRST…

BUT HERE WE ARE TALKING ABOUT EITHER CHICKEN CAME FIRST FROM EGG OR EGG CAME FIRST FROM CHICKEN ?????

•     SO WHO CAME FIRST ????

•     THE CONCLUSION OR THE SOLUTION IS THAT

•     OV-17 PROTEIN  WHICH IS IMPORTANT FOR MAKING AN EGG SHELL WHICH IS ONLY FORMED  IN THE OVARIES OF THE CHICKEN .

WE KNOW THAT THE MALE CHICKEN WILL REPRODUCE BY GIVING THEIR GENETIC MATERIAL TO THE FEMALE CHICKEN.

AND THE PROGENY  THAT COMES HAVE VERY LOW CHANCES  OF ABOUT BEING LIKE THEIR PARENTS …

THIS DNA IN PROGENY PRODUCE VARIATION AND MUTATIONS SO DNA CHANGES VERY MUCH AFTER THE GENERATION ….

FOR EXAMPLE :-

CAT AND LION

CAT IS SMALL AND LIKE OUR FRIEND. BUT LIONS LIVES IN JUNGLE AND ARE NOT FRIENDLY ..

The DNA mutation depends upon how species are living and the climate in which they living etc.

•     THIS DNA MUTATION STARTS IN THE FIRST CELL CALLED ZYGOTE..

•     SO WE CAN SAY THAT THIS EGG WAS
 PRE-EGG
OF CHICKENS.

AND IN THIS PRE EGG MUTATION AND VARIATION COMES WHICH LATER FORMS A CHICKEN....

SO WE CAN SAY THAT EGG CAME FIRST BECAUSE FIRST PRE-EGG DEVELOP INTO CHICKEN..

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WHAT IS NEWTON’s FIRST LAW OF MOTION ???

                                      TOPIC :- NEWTON’s LAW

WHAT IS NEWTON’s FIRST LAW OF MOTION ???

A BODY CONTINUE ITs STATE OF REST OR STATE OF MOTION ALONG A STRAIGHT LINE , UNTIL OR UNLESS an EXTERNAL FORCE IS ACTED UPON THEM....

SO THE QUESTION ARISE . WHY WE CAN NOT STOP WHILE WE ARE WALKING??

THIS ALSO FOLLOW NEWTON’s 1^st LAW...

In his law he states that a body is in motion when there is no external force ..

                                               

                                     i.e. Force of friction

Let us take another example.

It also follow newton’s 1^st  law as the ball is in rest but when external force is applied by us it changes it state from rest to motion ..

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WHY FEBRUARY HAS ONLY 28 DAYS ?????

                                                TOPIC :- ROTATION


WHY FEBRUARY HAS ONLY 28 DAYS ?????


MANY YEARS AGO A ROMAN KING ROMULUS MADE A CALANDER FROM MARCH TO DECEMBER......

HE DID NOT CONSIDER JANUARY AND FEBRUARY EVEN WE CAN SAY THAT THERE IS NO BIRTH OF JANUARY AND FEBRUARY ...



BECAUSE THESE MONTHS ARE OF WINTER WHICH IS VEY COLD......
SO THEY DO NOT CONSIDER THESE MONTHS..



THEN THE SECOND ROMAN KING NUMA POMPILIUS MADE A CALANDER ACCORDING TO 12 LUNAR CYCLE WHICH IS APPROXIMATELY 354 DAYS

BUT IN ROME EVEN NO. ARE CONSIDERED UNLUCKY . SO NUMA ADD 1 MORE DAY IN 354 DAYS. 


HE ALSO MADE EACH MONTH ODD NO. IN HIS CALANDER THE JANUARY AND FEBRUARY TAKE PLACE AT LAST . HE LEAVES AN EVEN MONTH i.e. FEBRUARY WITH 28 DAYS TO REACH THE TOTAL OF 355 DAYS .....






BUT AS THE EARTH TAKE 365 DAYS AND 6 Hrs  TO COMPLETE ITS ONE REVOLUTION AROUND THE SUN...

SO SEASON  AND WEATHER CONDITIONS STARTED MISMATCHING WITH 355 DAYS .THEN JULIUS CAESAR WHO DECIDED TO FOLLOW THE SOLAR CALANDER OF EGYPTIANS...

THAT HAD JANUARY AND FEBRUARY AT THE FIRST PLACE AND MADE A CALANDER OF 365 DAYS  FROM JANUARY TO DECEMBER BUT THE 6 Hrs WERE LEFT SO AFTER 4 YEARS THERE IS A LEAP YEAR COMES WHOSE FEBURARY HAS 29 DAYS....

what is the reason of pimples??? // how to avoid pimples???

                                                           
                          topic :- pimples

how to avoid the growing pimples????

before we start we have to know how pimples grow on our face...

              the main reason of pimples is dust and oily skin.... our skin consist of sebaceous gland which produce oil ... when dust particles block the site from where oil is coming then the oil collect into that space and cause PIMPLE.... this is also called ACNE...

ACNE is a problem related to skin and pimples....
pimples can be avoided mainly by 2 methods :-

1) wash your face before going to sleep so that the dust particles get away...

2) patience ... pimples automatically get disappear in 7 or 8 days...

Do not squeeze the pimple it may cause to infection and increase the rate of pimples...

the science fact is pimples only grow in teenagers age because at this age our skin become oily....

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