Interesting Human Body Facts

AMAZING FACTS ABOUT HUMAN BODY

Body positivity is a growing concept that many people struggle with, regardless of gender, age or race. However, the human body is full of surprises and incredible processes that make up a person.

Here there are few amazing facts about your body that can amaze you after reading till end.

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v The brain is more active at night than during the day.

(Scientists don't know yet why this is.)

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v Facial hair grows faster than any other hair on the body.

v The nail on the middle finger grows faster than the other fingernails.

v Fingernails grow nearly four times faster than toenails.

v The acid in your stomach is strong enough to dissolve zinc. It doesn't destroy the stomach because the stomach walls constantly renew it.

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v Women's heart beat’s faster than men's. It's probably due to many things such as body size, heart size and hormones.

v Your body is made of about 7 octillion atoms (that’s 7,000,000,000,000,000,000,000,000,000 atoms).

v There are 37 trillion cells in our body.

v Your skin’s outer layer sheds every 2-4 weeks, amounting to roughly 0.7 kg of dead skin in a year.

v Cells in the inner lens of the eye, muscle cells of the heart, and the neurons of the cerebral cortex are the only cells that will be with you your entire life.

v You spend 10 per cent of the day blinking.

v Eyes can distinguish between 2.3 and 7.5 million different colours.

v Nose can differentiate between 1 trillion different smells.

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v Your fingers can feel a ridge as small as 13 nanometers in size (7,500 xs smaller than the diameter of a human hair).

v  Without your pinky finger, you would lose 50% of your hand’s strength.

v If you were to spread out all the wrinkles in your brain, it would be about the size of a pillowcase.

v Your heart beats 100,000 times per day, pumping 5.5 liters per minute, which adds up to about 3 million liters of blood a year.

v Human decomposition begins around 4 minutes after death, a process known as ‘self-digestion’ where your enzymes and bacteria eat you away.

v 3 to 5 lbs of your body is made up of bacteria. Between 100 million to 1 billion bacteria can grow on each tooth.

v In terms of compression strength, the femur bone of a person weighing 83kg with US size 11 feet could withstand the weight of 16,000 people standing on it at one time.

v If the entire DNA in your body were uncoiled, it would stretch out to about 10 billion miles, which is from Earth to Pluto and back.

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Useful & Simple Maths Tricks

SIMPLE MATHS TRICKS

v Squaring:

In this simple trick, we need to modify the equation and make the units digit zero. After all, it is easy to multiply when unit’s digit is zero.

For example - Find square of 43

= (43+3) × (43-3) + (3×3)
=(46×40) + 9
= (460×4) + 9
= 1840 + 9 = 1849

               OR (By the Other way)

Example-

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v Multiplication-

Vedic maths gave us the easiest method to do complex multiplications quickly.

For Example- Multiply 62 with 32

                                                           Step 1

                                                             Step 2 

                                            Step 3

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Ø    Multiplication with 5

o   Simply multiply the number by 10 and then divide it by 2.
For example 99×5

Step 1: 99×10=990

Step 2: 990/2= 495

Ø    Multiplication with 99

o   Multiply the number with 100 and then minus the same number from the result.

Let's take an example
Multiply 32×99

Step 1: 32×100=3200

Step 2: 3200-32 = 3168

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v Computing Compound Interest

 A] C.I. for 2 years, CI₂ = R₂% × Principal where, R₂=2r|r² 

For Example- Principal = 10,000; Rate = 12%; Time = 2years
Here, R2 = 2×12/12×12 = 24/144 = 25. 44
⇒ CI2 = 25.44% × 10000 = 2544

B] C.I. for 3 years, CI3 = R₃% × Principal where, R₃=3r|3r²|r³

For Example- Principal = 25,000; Rate = 12%; Time = 3years
Here, R3 = 3×12|3×12×12|123 = 36|432|1728 = 40.4928
⇒ CI3 = 40.4928% × 25000 = 10123.20

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v Time and Work

Every question in time and work chapter can be solved easily by finding the efficiency of workers or subject (such as pipes).

For example- A takes 10 days to complete a job. B takes 20 days to complete the same job. In how many days they will complete the job if they work together?

⇒ A's efficiency = 100/10 = 10% per day
⇒ B's efficiency = 100/20 = 5% per days
⇒ A and B can do 15% of the work in a day if they work together. So they can do the whole job in 100/15 = 6.66 days or 6 days and 18 hours.

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v Number Series

In Number series questions, you need to find the pattern of series.

Let's take an example: 

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WHAT IS HTML?

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HTML BRIEF HISTORY

 Ø In 1980, physicist Tim Berners-Lee, a contractor at CERN, proposed and prototyped ENQUIRE, a system for CERN researchers to use and share documents. In 1989, Berners-Lee wrote a memo proposing an Internet-based hypertext system.

 Ø Berners-Lee specified HTML and wrote the browser and server software in late 1990. That year, Berners-Lee and CERN data systems engineer Robert Cailliau collaborated on a joint request for funding, but the project was not formally adopted by CERN. In his personal notes from 1990 he listed "some of the many areas in which hypertext is used" and put an encyclopedia first.

Father Of HTML

Ø The first version of HTML was written by Tim Berners-Lee in 1993. He said as inventor or father of HTML. Since then, there have been many different versions of HTML. 

                                                            

  

     

HTML BRIEF INTRODUCTION

Ø Full Form of HTMl is Hypertext Markup Language, which is the standard markup language for creating web pages and web applications.

Ø Web browsers receive HTML documents from a web-server or from local storage and render them into multimedia web pages. HTML describes the structure of a web page semantically and originally included cues for the appearance of the document.

Ø HTML markup consists of several key components, including those called tags (and their attributes), character-based data types, character references and entity references. HTML tags most commonly come in pairs, but some are not.

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 v BASIC STRUCTURE OF HTML:-

<html>

<head>  </head>

<body>

</body>

</html>

Ø <html> … </html>

 It’s a paired tag. This tag indicates that the code is written in the HTML.

Ø <head> … </head>

It’s too a paired tag. This is used for the heading of a web page. It will make the text in bold automatically.

Ø <body> … </body>

It’s too a paired tag. This tag is for writing the main content of the web page. Here other tags can also be included for making it attractive.

v Other basic tags in HTML are as follow:-

HTML tags means?

ð HTML tags are the hidden keywords within a web page that define how your web browser must format and display the content.

<h1> to <h6> It’s used to make text heading. <h1> is the smallest heading format & <h6> is the biggest format of heading.

<b> It’s used to make any text bold. Eg. <b> ABCD </b> O/P ABCD

<i> It’s used to make any text in Italic Form. Eg. <i> abcd </i> O/P- abcd

<p> It’s used to make any text in format of paragraph.

<br> It’s used to break line from whole single line.

<centre> It’s used to set the text in middle of the web page.

<sub> It’s used to make any text in form of subscript. Eg. H₂O so it can be written as H₂O.

<sup> It’s used  to make a text above it like power. Eg. 10²  so it can be written as 10<sup>2</su>.

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C – Language History & Basics

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C – Language History & Basics

·  The C programming language was developed at Bell Laboratories in 1972 by Dennis Ritchie

·   C programming language features were derived from an earlier language called “B” (Basic Combined Programming Language – BCPL)

·     C language was invented for implementing UNIX operating system

·       In 1978, Dennis Ritchie and Brian Kernighan published the first edition,"The C Programming Language” and commonly known as K&R C

·  In 1983, the American National Standards Institute (ANSI) established a committee to provide a modern, comprehensive definition of C.The resulting definition, the ANSI standard, or “ANSI C”, was completed late 1988.

FEATURES OF C PROGRAMMING LANGUAGE:

Ø C language is one of the powerful language. Below are some of the features of C language.

·         Reliability

·         Portability

·         Flexibility

·         Interactivity

·         Modularity

·         Efficiency and Effectiveness

USES OF C PROGRAMMING LANGUAGE:

Ø The C programming language is used for developing system applications that forms a major portion of operating systems such as Windows, UNIX and Linux. Below are some examples of C being used.

·         Database systems

·         Graphics packages

·         Word processors

·         Spreadsheets

·         Operating system development

·         Compilers and Assemblers

·         Network drivers

·         Interpreters

                                 
     Levels of Programming Languages:

Ø There are 3 levels of programming languages. They are,

1.     Middle Level languages:
Middle level languages don’t provide all the built-in functions found in high level languages, but provides all building blocks that we need to produce the result we want. Examples: C, C++

2.     High Level languages:
High level languages provide almost everything that the programmer might need to do as already built into the language. Example: Java, Python

3.     Low Level languages:
Low level languages provides nothing other than access to the machines basic instruction set. Example: Assembler

     C LANGUAGE IS A STRUCTURED LANGUAGE:

Ø Structure oriented language:

·   In this type of language, large programs are divided into small programs called functions.

·         Prime focus is on functions and procedures that operate on the data.

·         Data moves freely around the systems from one function to another.

·         Program structure follows “Top Down Approach”.

·         Examples: C, Pascal, ALGOL and Modula-2.

Ø Object oriented language:

·         In this type of language, programs are divided into objects.

·     Prime focus is in the data that is being operated and not on the functions or procedures.

·         Data is hidden and cannot be accessed by external functions.

·         Program structure follows “Bottom UP Approach”.

·         Examples: C++, JAVA and C# (C sharp).

Ø Non structure oriented language:

· There is no specific structure for programming this language. Examples BASIC, COBOL, FORTRAN.

C PROGRAMMING BASICS TO WRITE A C PROGRAM:

Ø Below are few commands and syntax used in C programming to write a simple C program. Let’s see all the sections of a simple C program line by line.

C Basic commands	Explanation
#include<stdio.h>	This is a preprocessor command that includes standard input output header file(stdio.h) from the C library before compiling a C program
#include<conio.h>	This is a preprocessor command that includes console input output header file(conio.h) from the C library before compiling a C program
main()	This is the main function from where execution of any C program begins.
{         }	This indicates the beginning & ending of the main function.
/*_some comments_*/	whatever is given inside the command “/*   */” in any C program, won’t be considered for compilation and execution.
Clrscr()	This Is built-in-function which Clear the output screen before executing the program.
printf(“Hello World! “);	printf command prints the output onto the screen.
scanf(“string type”,& variable name);	This command Is used to get any data from the user.
getch();	This command waits for any character input from keyboard.
Eg. printf("Enter Number=");       scanf("%d",&a);	Here the printf statement will print "Enter Number=", Through scanf user can put the number.

       

    BASIC STRUCTURE OF A C PROGRAM:

Ø Structure of C program is defined by set of rules called protocol, to be followed by programmer while writing C program. All C programs are having sections/parts which are mentioned  below.

1.   Documentation section

2.   Link Section

3.   Definition Section

4.   Global declaration section

5.   Function prototype declaration section

6.   Main function

7.   User defined function definition section

Example OF Basic Structure Program:

/*     Documentation section     C programming basics & structure of C programs */ #include <stdio.h>     /* Link section */ int total = 0;             /* Global declaration, definition section */ int sum (int, int);    /* Function declaration section */ void main ()            /* Main function */ {      clrscr();     printf ("This is a C basic program \n");     total = sum (1, 1);     printf ("Sum of two numbers : %d \n", total);     getch(); } int sum (int a, int b) /* User defined function */ {       return a + b;      /* definition section */ }

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