If black box in an Airplane is indestructible, then why don’t they make the whole plane of the same material?

black plane

The construction of the Digital Flight Data Recorder and Cockpit Voice Recorder boxes is military grade. And they are virtually indestructible.

But there have been many cases where the impact was so strong that even the black box couldn’t sustained damage. Still, why not built an airplane using the ‘strengthening’ concept, isn’t the stronger the better.?


NO ! since as its well known that, its not the fall that kills you, its the sudden stop.
An indestructible aircraft may survive that sudden stop but no human could.

Black boxes are placed in protected locations near the rear of the airplane and, unlike humans, they are designed to survive accelerations up to several hundred g-forces.

Passengers don’t die because the plane is not strong enough.
Passengers die because unlike black boxes, passengers’ bodies are not strong enough to survive the rapid deceleration, smoke and fire that ensue in a crash.

Along with carry-on bags, laptops, food trolleys etc some of which may hit you while traveling at speeds of several hundreds of kmph relative to your body.

Hence the best way of protecting airplane passengers is to avoid crashes in the first place. Task at which our technicians and engineers are getting better each day passing.

It is remarkable how the number of aircraft accident fatalities has not significantly increased in the past 50-60 years despite the fact that air-traffic has increased by a factor of a significant margin !

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Tips/hacks you wish you had known sooner


Below are the list of 14 tips (and hacks) one could employ to save time and money and life in some cases. Given points are just an accumulation, so use it at your own discretion.

1. Set you EMERGENCY contacts

Make all those numbers (for eg. whom you will call in case of credit/debit card lost), as favorites or speed dials. They may come in handy specially while commuting.

Also you must at least 2 of your contacts with whom you share an acquaintance with in your current city.

Since i am a bit memory short, I have a small paper note containing those 2 numbers, in my wallet and carry-bag at all times.

2. Masks with N95 or N99 filters

This life hack works specially in metro cities, where the pollution levels are always high. Usually when Diwali comes, the pollution is at the peak.

Here is a reason why you should use masks with N95 or N99 filters:

People often use dupattas, handkerchiefs and surgical masks but they only filter coarse dust particles or Particulate Matter (PM) 10, which is anyway not harmful. It’s PM 2.5, which is harmful, that they cannot filer. You need N95 or N99 filters for those situations.

More details: A-special-mask-that-helps-you-breathe-easy-in-delhi/


3. Write down WRONG PIN of your ATM, on ATM cover

So that if you lost your ATM card and thief tries to enter that number three times, normal ATMs will eat that card after 3 wrong attempts or at least block it, and your money will be safe.


4. Always carry some money UNDER your mobile phone’s cover

It has been proven beneficial for me every month. Many times, you forgot your wallet in a hurry (like I tend to forget when I try a different trouser at work). And what if those are the emergency/crucial times. So better prepared than sorry.

mobile money

5. Always have your ADDRESS (current) card in your wallet

So that even if you lost it at while roaming somewhere at tourist places, you have some chance to get it back via some good soul.


6For those who have BABIES

Wear your door key on a neck chain all the times in case you accidentally lock yourself out (while throwing out the garbage etc) and the baby’s inside the home alone.

Get an aluminium duplicate key because regular ones tend to soil and mark your skin.


7. You can SAVE YOURSELF from getting unknowingly looted at Indian petrol stations

Always ask for some odd number of liters of fuel at Petrol station.

If you fill fuel worth of round digit figures, like most of the people do, example Rs 50 or 100 or 200 or 500, you will actually get fuel little less than what the amount is for.

For example, If you fill worth Rs 200, you will get only petrol worth of Rs 185 or so, which you can’t see because the pump shows Rs 200. This is how they loot thousands of rupees from all the customers all round the clock. So next time go for Rs. 503 or 507 if you want fuel worth Rs 500.


8. Always shower BEFORE swimming

If you are living in a place where the temperature usually goes above 40’c, not showering before diving into the pool can cause a fatal heart attack. This is due to the sudden lowering in body temperature, and an abrupt increase in the heart rate and blood pressure.


9. How to check for HOAX messages instantly

You all must be receiving a lots of hoax messages in Whatsapp in groups or forwarded by your friends. And some of you (not all) may forward that hoax without finding whether it is a real or fake news.

Even for finding it, you will search few keywords of that messages into search engines. But there’s an easy way to find whether it is real or fake.

Just save this number:

+91 9035067726 This is contact number of Check4Spams who reply you whether the message you sent to them is real or fake.


10. Secure your FOOTWEARS at temples/religious place.

The quick hack to the problem is to never put your footwear together and if possible, turn one of them upside down.

This drastically reduces the chances of your good looking footwear catching a thief’s eye. Thieves normally just pick up the ones that are kept together and look good at first glance before escaping the venue quickly.


11. ‘Rescuer’ app to the rescue

Whether it’s a rape or a kidnapping situation, or even a heart attack, an app called Rescuer can save your life.

With this app, you can silently call for help by pressing your phone’s volume buttons in a secret pattern.

Say your customized key phrase, and Rescuer will hear it and immediately send out emergency messages (+ GPS coordinates) to pre-set emergency contacts.

You can open you can press the giant red help button on your home screen and emergency messages will be sent immediately and many more life saving features.


12. Perform bank transactions using your mobile WITHOUT INTERNET

Wish that checking your account balance, getting mini-statement of your last few transactions was as simple as checking balance amount in your prepaid phone?

Well then here’s a service which lets you all of that even without Internet.

If yes then let me introduce you to USSD based Mobile Banking.

It’s a simple, yet powerful service provided by National Payments Corporation Of India (NPCI) to allow masses to provide access to basic banking services without Internet through USSD codes. These are simple codes which connect to the telecom operator’s server and bank’s server.


Just follow the steps given below:

Dial *99# and you’ll be directed to National Unified USSD Platform(NUUP).

Enter three letter abbreviation of your bank’s name or first four letters of bank IFSC code or first two digits of bank’s numeric code. Hit send.

You’ll now see following main options:

Account Balance
Mini Statement
Send money using MMID
Send money using IFSC
Send money using Aadhar number
Change M-PIN
Generate OTP

Select the number against whatever service you want to use and hit send. Based on the bank, you’ll be directed to the appropriate pages or displayed the required information.

How to use the service?

Your mobile number should be registered with the bank to enable Mobile Banking. Remember that you don’t have to necessarily visit a bank to register your mobile number for mobile banking. It can be done at most ATMs as well.

Charges: TRAI has directed the telecom operators to charge maximum of ₹1.5/transaction.

Transaction Limit: ₹5000 per transaction.

For more details regarding availing each of the services listed above and other additional information, here’s a link for reference: http://www.npci.org.in/documents….


13. NEVER shop on a empty stomach

Never go grocery shopping when you’re super-hungry. Why? Because everything looks good, so you’ll undoubtedly start throwing in items you normally might not buy.


14. Always keep mentholated PAIN BALM such as Vicks Vaporub but not for the headache

If you find yourself in a place plagued with mosquitoes and with no bug repellent on hand, what you can do is ask around for a mentholated pain balm such as Vicks Vaporub. It works like a charm to keep the pesky mosquitoes away.

People will argue that why not to have the real deal, the ‘Odomos’ itself. Sure thing that its effective but Vicks is just an alternative and its your choice.

Below image has some other unheard uses of this ointment:


Bonus tip: 
If you want to reach somewhere fast, get one fire extinguisher. No one will stop you, if you are with it. 😛

(P.S: couldn’t get the relevant image so used this ! )

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How an Arts candidate application rejection started WWII ?

World war II

Below are the list of 5 random but major events that though started by a tiny factor, have caused dreadful consequences.

  1. In 1905, the Academy of Fine Arts in Vienna rejected and Application. Twice. Which resulted in probable outburst of  World War II.

    Cause: That aspiring student was Adolf Hitler. He’d moved to Vienna to study Art and when his mother died, he found himself stranded there and forced to live in the slums.It was at that time he became Anti-Semitic. From there, he joined the German Army and moved up ranks.
    Eventually, Germany’s Invasion of Poland as per Hitler’s order, started World War-II. Imagine the world he would have spent his time on figure drawings, instead.hitler
  2. In 2009, one of the Google employees made a typo, and flagged every site on the internet as harmful. 

     The programmer was adding websites to the malware registry when he accidentally entered ‘/’ (forward slash), instead of a full URL. And since all websites contain slashes, that keystroke determined that every website on the web was harmful and couldn’t be visited safely.goog
  3. Aug 9, 1945, was a cloudy day in Kokura, Japan. And that’s why the U.S dropped atom bomb on Nagasaki.

     As Kokura was the site of large ammunition factory, and the first choice of the target of the bomb. But the bomber pilots had instructions only to drop the bomb only if they have visual confirmation of the factory. So they moved on to Nagasaki, where the skies were clear.A memorial  to the victims of Nagasaki stands on the site of the former factory in Kokura, to this day.naga

  4. In 1907, a stockbroker wrote a novel called Friday, the thirteenth.
    And now the U.S economy loses $900 million on the same day.The superstition caused by the book was so widespread that instead of going on vacations, work, shopping etc, a huge number of people stayed at their own place without doing anything.Due to which market suffered and registered and average gain of 0.2% or less.
  5. In 2010, the publishing house Penguin had to pulp 7000 copies of their newly released book The Pasta Bible resulting in huge loss.
     when it was discovered that one of the recipes called for “freshly ground black people” instead of “freshly ground black pepper”. Penguin cookbook calls for ‘freshly ground black people’.




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