Amazing Things to Learn

8/16/2019 Amazing Things to Learn

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If you get an unusable headphones, don't throw it away. You can cut & remove the wire, and use the TRS

ac! as the "# antenna for your smartphone.

$ll you need is to plug%in this TRS ac! into your phone's headphones plug, and open the "# radio app,

then start listening through your loudspea!er.

How it works: The headphones wire wor!s as the "# antenna for mobile phones. sually "#

transmission will have a very strong signal, which needs a small piece of wire to receive the signal.

Hide any file inside an image file.

This a small steganography hac! that is fun and sometime really useful, when you want to send some file

over internet, but upload of only image file are allowed on that server.

"irst here is the definition of stenography from i!ipedia.

Steganography (Listen) is the art and science of writing hidden messages in such a way that no one, apart

from the sender and intended recipient, suspects the existence of the message, a form of security through

obscurity. The word steganography is of reek origin and means !concea"ed writing# from the reek

words steganos ($%&'*+) meaning !coered or protected#, and graphei ('-/) meaning !writing#.

In short, when you see the file it's ust a normal image, but it has some hidden message inside it, or ingeneral it can contain anything, even a whole movie.

There are lots of tools available for this purpose, but we can do it using what we already have ust the

command prompt in windows.

The requirement

• The image file


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• The file to be hidden, the zip file

• Command prompt

The image I will be using is this

and I want to hide a Ms word file and a Pdf behind this image, Selet both the file and send to a !ip

file.

Steps..

(. )lace the *ip file and the image in a folder , I am placing it on the des!top.

+. pen cmd-command prompt and then go to the directory where both the files are. /i!e for

e0ample, in this case, it's 1des!top1. So you might need to type cd des!top

2. 3ow type copy 0b imagefi"ename 1 2ipfi"ename 3fi"ename with extensions4, here is the image for

clarity.


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4. 3ow the si*e of the image will increase, what this is doing is simple, ust appending the second

file to the first file and that 5b is to specify that it is a binary file.

"pening The file

$fter copying, the image file si*e will only increase, but it can be opened normally and no difference will

be seen e0cept the si*e. To open the 6ip file, open this image with any 6ip tool li!e #zip, winrar, or

winzip and you can find all the files there, ust e0tract it wherever you want.

$ote7 This techni8ue is simple and 8uic! but as you can see anyone with a prior !nowledge can easily

find out. $lthough the benefit is that it doesn't draw anyone's attention.

To Stop 9iccups Instantly 7

%rin&ing water , from the wrong side of the glass.

The side of the glass , that is away from your mouth, is the wrong side.

$nd this happens to be the only way one can drin! water from the wrong side. -:lad I found a picture.

or!s every time;


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'ind %iret %ownload (in&s using )oogle.Tired of torrents running out of seeders< 3o worries. You can search for direct download lin!s using:oogle;

To download movies, perform a :oogle search as below7

=5678 S98;H T98< H989 > %inurl7-htm?html?php?pls?t0t intitle7inde0.of =last modified> -m!v?mp4?

avi

*+ample7

Titanic =inur":(htm>htm">php>p"s>txt) intit"e:index.of !"ast modified# (mk>mp?>ai)

You can use this search tric! to download not ust movies, but almost any file.

"or instance, to download music,

=5678 S98;H T98< H989 > %inurl7-htm?html?php?pls?t0t intitle7inde0.of =last modified> -mp2?wma?

aac?flac

@ust change the file format A-mp2?wma?aac?flac partB to your re8uired format and you will get a search

result of sites containing direct download lin!s to your search 8uery. Cnoy;

Even simpler approach would be to simply google

"Parent directory fle name"

Try searching this in google:

"Parent directory transormers.avi" or

"Parent directory transormers.mkv"

Click on any link rom the search results.

This will load a simple page on your browser which will probably have a lot o links.

ind your flename and click on it to directly download it without using any e!ternal

download client.


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hen a kid# table manners always conused me. hich hand to use or what while eating.

Then# this simple hack helped.

$et %& letters' hand or & lettered things ( ork

)ight %* letters' hand or * lettered things ( spoon# knie# glass


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+ow about memori,ing ongoing year calender in - minutes.

/t is as simple as memori,ing -0 digit number.

Lets do it for 2014

255 136 140 250

%Try memori,ing it right away with your own little patterns in mind.'

1tating the obvious# each digit is or a month. 1o#

0 or 2an#

* or eb#

* or 3ar#

- or 4pr# and so on...

/n order to fnd the day o the week ollow these simple steps. $ets work with 15 August,

2014 as an e!ample.

1. Take the month and recall the code you memori,ed. Easy5 %6ou 7ust crossed the most

di8cult part o it.' Ex: Code for August is 4.

2. Take the date and add it to above code.

Ex: 15(date) + 4(code) = 19

3. 9ivide the above result by %always' and fnd the remainder %the modulo operation'

Ex: 19 mod = 5. !19" =# $uotie%t=2 & Remainder=5 '

4. 9one. 6ou now have the day o the week. +ere is the what the remainder implies.

;< 1unday- ;< 3on

0 ;< Tues

= ;< ed

& ;< Thur

* ;< riday

> ;< 1aturday

o August 15, 2014 is a rida* . %En7oy long weekend people in /ndia'.

6ou won?t have to remember the day mapping. Practice it with all your anniversary dates

and very soon it will start coming natural. /nact with a little practice doing step 0#= @ & is amatter o seconds.

P1 : / you get the logic right# you can Auickly orm the -0 digit code or yoursel each year

rom the calender. /t is simply one less than the day on which a month starts. 1o suppose in

0-*# 2anuary starts rom Thursday %i.e. &th day'# the code will be &(- ; =. Cor%er case: /

month starts rom 1unday %i.e '# - less than will mean looping back to >.


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Dlosing )lastic bag using plastic bottle's cap

Eifferent ways of tieing your tie !not


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Create your own wifi hotspot on indows # or -

You don't need connectify or any other software for it. $lso, you can save yourself from that FG minutes

counter in connectify.

$ll you need to do is run the following two commands in cmd %

"pen md with /un as 0dministrator.

12 netsh wlan set hostednetwor& mode3allow ssid3wifiname &ey3wifipassword

42 netsh wlan start hostednetwor&

Hest solution % #a!e a batch file of it and ust run the file every time when you start the pc.

To ma!e a batch file %

"irst write the commands on a notepad

Then save it with the e0tension bat. e.g. wifi.bat

Your batch file is made and now e0ecute the file with $dmin )rivileges.

Important "or this to wor!, your sharing should be on in networ! properties for the networ!5ethernet

connection that you want to share through your wifi7

:o to pen 3etwor! and Sharing Dentre %Dhange $dapter Settings-n left panel

5our wifi hotspot would be Mirosoft Hosted $etwor& 6irtual 0daptor in the $etwor&

Connetions.

:o to the properties of the /$35ethernet5i"i connection and ma!e the changes accordingly.


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Your wifi hotspot would be ready. 7

*dit 7

To stop the wifi hotspot %

rite the following in command prompt 7 netsh wlan stop hostednetwor&

How to learn Pythagorean triplets?

-. / the number is odd# sAuare it and then divide by 0. The resulting number will be in the

orm o !.*. The other two numbers in the Pythagorean triplet will be ! and !B-.

Eg. umber =. 1Auare o = ; D. D0 ; &.*. The other numbers are & and *

$ets take another e!ample. umber =. 1Auare o = ; -=>D. -=>D0 ; >F&.*. The other

numbers orming the Pythagorean triplet are >F& and >F*.

0. / the number is even# halve it and then sAuare it. The resulting number will be in the

orm o y%say'. The other two numbers in the Pythagorean triplet will be y(- and yB-.

Eg. umber &. +al o &;0. 1Auare o 0;&. The others numbers: &(- and &B-# i.e = and *

4nother e!ample. umber -F. +al o -F;D. 1Auare o D;F-. The other two numbers

orming the Pythagorean triplet are F and F0

% tis -a*, *ou ca% %o- %o- i%/%ite *tagorea% triets33


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How to find square of any number in seconds with just mental calculation?

There are many ways with which we can find out s8uare of a number within seconds. /etJs see how we

can find out s8uare of a number faster using Kedic #athematics -3i!hilam method

*+ample 17 'ind out the square of 14

Step 1

e need to ta!e the nearest power of (G. So here (G is the nearest power of (G which we can ta!e as our

base. The deviation to the base L (+%(G L +

-To find out the deviation, ust remove the left most digit 1(1 and you will get it 8uic!ly

3ow the /eft 9and Side of the answer -/9S will be the sum of the number and deviation. 9ence the /eft

9and Side of the answer -/9S L (+ M + L (4Step 4

ur base is (G which has a single *ero. This means that our Right 9and Side of the answer -R9S will

have a single digit and that can be obtained by ta!ing the s8uare of the deviation.

9ence the Right 9and Side of the answer -R9S L +N L 49ence the answer L (44


Step 1

e need to ta!e the nearest power of (G. So here (G is the nearest power of (G which we can ta!e as our

base. The deviation to the base L (2%(G L 2


3ow the /eft 9and Side of the answer -/9S will be the sum of the number and deviation.9ence the /eft

9and Side of the answer -/9S L (2 M 2L (O

Step 4



9ence the Right 9and Side of the answer -R9S L 2N L F9ence the answer L (OF


Step 1

(G is the nearest power of (G which we can ta!e as our base. The deviation to the base L (4%(G L 4-To find out the deviation, ust remove the left most digit 1(1 and you will get it 8uic!ly


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9and Side of the answer -/9S L (4 M 4 L (PStep 4



9ence the Right 9and Side of the answer -R9S L 4N L (O. 9owever please note that the Right 9and Side

of the answer -R9S can have only a single digit because our base (G has a only single *ero. 9ence, fromthe obtained number (O, we will ta!e R.9.S as O and ( is ta!en as a carry which we will add to our /9S.

9ence /9S becomes (PM( L (F

9ence the answer L (FO

*+ample 97 'ind out the square of 1:;

Step 1

9ere (GG is the nearest power of (G which we can ta!e as our base. The deviation to the base L (GO%(GG LO


3ow the /eft 9and Side of the answer -/9S will be the sum of the number and deviation. 9ence the /eft9and Side of the answer -/9S L (GO M O L ((+

Step 4

ur base is (GG which has two *eros. This means that our Right 9and Side of the answer -R9S will have

two digits and that can be obtained by ta!ing the s8uare of the deviation.9ence the Right 9and Side of the answer -R9S L ON L 2O.

9ence the answer L ((+2O

*+ample


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9and Side of the answer -/9S L ((+ M (+ L (+4Step 4

ur base is (GG which has two *eros. This means that our Right 9and Side of the answer -R9S will have

two digits and that can be obtained by ta!ing the s8uare of the deviation. 9ence the Right 9and Side of

the answer -R9S L (+N L (44. 9owever please note that the Right 9and Side of the answer -R9S can

have only two digits because our base (GG has only two *eros. 9ence, from the obtained number (44, we

will ta!e R.9.S as 44 and ( is ta!en as a carry which we will add to our /9S. 9ence /9S becomes (+4M(

L (+Q

9ence the answer L (+Q44

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