Hey visitors, this is the second post of the day and with the first problem that i faced when i was in 11th standard dealing with the mathematical functions and some how one day the answer strikes in my mind. I was the lucky boy and 3 years later now i am going to explain this to you all so let's get started.


so first of all we will take a number for convenience let's take 0.04 the square root is 0.2

so which number is bigger 0.04 or 0.2 obviously 0.2  but how ? 

and the square of 0.04 is 0.0016 same as the square is smaller then the number.
 
so you get the question now it's time for answer

 let's first start with number concept natural numbers are the numbers found in nature except this all the numbers are there to define anything for example  -1,-2,-3... all the negative number means they are on the right side of co-ordinate axes


so what's with the number 0.01 ?


0.01 means that the number is 100 times smaller then the number which is taken as the standard or unit.

for example the S.I unit of the distance is meter soit is taken as unit 1 what about millimeter. It is something 1000times smaller then a meter so we can write it as 1/1000 of a meter or 0.001. this is the reason behind the existence of these decimal numbers.



so why the square is smaller ?

square,cube... generally refer to change in dimension of the number

for example 1m is 1000times larger then 1millimeter
so the square of 1m is the area of 1m^2 it's dimension is changed from length to area from 1D to 2D 

but the comparison scale is same now we are comparing an area of 1m^2 to an area of 1mm^2 


which is 10^6 or 1 million times smaller then the area of 1m^2 .

that means it took 1million  1mm^2 square box to make an area of 1 m^2


this is the only reason why the square is smaller because decimal scale are made to compare thing with unity 1mm is 1000times smaller then 1m in length comparison while 1mm^2 is 1million times smaller then 1m^2  for cube it will be 1billion times and so on...
i hope this diagram will explode your imagination 



Thanks for reading!

Here we go today i am going to explain How To Measure Earth's radius ? 

you just need a mountain & stop watch  don't able to afford a mountain alright just know the distance between two cities confused by the end of the article you will be able to understand everything just relaxed. So let's get started

Around the time 275BC there lived a greek Mathematician by the name of Eratosthenes born in cyrene (Modern day Libya).

So How Eratosthenes calculated earth's radius ?


1.Syene is at the tropic of cancer (sun rays straight overhead)
2.The earth is a perfect sphere


so 7/360 is equals to 800km of the circumference.

By this Eratosthenes able to calculate The circumference hence The radius of earth.

Pikachu performing Thunderbolt

Let's leave pikachu for a while and concentrate on a creature that exist in real life and performs thunderbolt by itself i am talking about the electric eel

Electric eel in Amazon

Some data's

1.Electrical eel's are able to generate current with biological cells called electroplaques which are physiological emf devices.

2. Each electroplaque has an emf of 0.15V & internal resistance (r) of 0.25 ohm

3.The water surrounding it has an resistance R = 800 ohm

4.The body of eel have 5000+ rows and 100+ column 140 in this case


As you see it is making itself a circuit.

The total resistance along the row is the sum of the internal resistance of 5000 electroplaques
Now circuit in parallel
R(eq) = 140/R(row) = 1250/140 = 8.93 ohm

1.E(row) - iR(water) - iR(eq) = 0

i = E(row)/R(water) + R(eq) = 750/800=8.93 = 0.93 A