Category Career Queries

What are some old forgotten jobs, which have lost their importance in today’s world?

Technology and advancement have brought us so far that there were some jobs which are now obsolete or entirely changed.

Following are some which are old forgotten jobs.

Pre-radar Listener

These were used to detect enemy aircraft.

Pre-Radar listener is one of them. During war times these pre-radar listeners were used to detect the enemy approaches. They had built in a way that could capture sound from some good distances and were used for reporting and surveillance.

Bowling Alley Pinsetter

Workers usually young boys used to work at bowling alleys. Their job was to set up the pins for customers. Really used to be a very busy job.

Lamplighter

Workers were required to refuel and extinguish the lamplights. These lamplighters used long sticks to light the lamp and refuel before the bulbs and electric lamps were introduced

Switchboard Operators.

Not long ago, these workers were an essential part of the telephone networks. They used to connect long distance calls by switching pins.

 

Credit : Quora

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What are shocking historical facts they don’t teach you in school?

The Prison System in the 18th, 19th and beginning of the 20th century was solely based on punishing

So, you might think the prison system today is harsh. Think again. In the 19th century the US and Britain prison systems were based on punishing prisoners to the point that they wouldn’t commit a crime again in fear of landing in prison.

How bad was it?

First let me tell you about this one

The Eastern State Prison

The eastern state prison was a 40,000 square meter prison, and was for a long time the largest building in the US.

The Eastern State Prison’s system was basically based on completely isolating the prisoner, so for his whole sentence he would not see nor communicate with another inmate ever.

* When the prisoner was first shoved to his cell, a mask was put over his head to prevent him from seeing another prisoner.

* The walls were extra thick to prevent communication by knocking on the wall

* When the prisoners arrived they were all given a number, which was the only name they were allowed to go by

* The prisoners received food through a hole in the wall to prevent catching an eye contact with the guard

And you think just that is bad? Because there’s more.

* In many prisons the prisoner had to pay just to sleep on a bed and sometimes also to be released.

So if you didn’t have any money, you could be just left inside the prison for a couple more years after your sentence.

* The prison food was truly awful.

Often the prisoners just received nothing more than a little bit of porridge, gruel or soup for every meal.

* The work was most often completely meaningless

This was a very common tactic in prisons, to rob the prisoner of the joy that comes from a job well done, because, well, he hadn’t really achieved anything at all.

Some of the work prisoners did included:

The Crank

Prisoners had to turn a crank up to 10,000 times per day, with absolutely no purpose

The Penal Treadmill

Basically stairs that whenever you stepped up, it turned, so to avoid falling of you just had to keep stepping

Breaking rocks with a sledgehammer

Now, you might think they needed smaller rocks for making roads or building something but that was not the case. It on purpose had no meaning.

 

Credit : Quora

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Which person in history, if they lived 5 years longer, would make the biggest change to history?

Evariste Galois

He was killed in 1832 at age 20 in a duel over “une femme”.

On the night before the duel he wrote a letter containing 60 pages of his math findings. In 1846 Liouville published his results on group theory, but it was only around 1870 that Camille Jordan finally understood it and its implications… Unlike Gauss, whose math works were mostly questions that other persons later discovered on their own, all of Galois’s findings were original and revolutionary.

So we make Galois survive the duel and live five years longer. I assume the near death experience would motivated him to properly expose his ideas. This would accelerate math development of groups theory a whole four decades, but most important, the great math minds that were alive and productive during this time interval will have the chance to work upon it. Imagine Gauss and Riemann having access to Galois’s ideas and tools- it is like giving the minds behind the Manhattan project access to a modern PC to design and calculate his A-Bombs.

One can safely assume that magnetism theory and relativity would be formulated earlier as well- Cantor would achieve his own results earlier and likely expand upon them. Galois’s death delayed math development at least 40 years, in the time frame exactly before math gave birth to relativity and quantum mechanics.

Then we enter the speculation scenario: if between 17y and 20y Galois produced such revolutionary results, what would he do living five years longer? Would he solve Fermat’s last theorem?! Galois’s mind worked in ways alien to most humans minds, the kind of genius we are blessed with once a century, if that much.

 

Credit : Quora

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Who is the most misunderstood historical figure?

Anne Frank.

Now, you’re probably thinking “Why Anne? I thought we knew a lot about her!” And you’re correct, we know a lot about Anne Frank, but there’s something people don’t get.

Two diaries came from Anne. One was A Diary of a Young Girl and the other was The Diary of Anne Frank: The Critical Edition.

The first edition (A Diary of a Young Girl) is the edited version. Such edits were made by Anne’s father, Otto Frank, and some came from Anne herself.

So, what was left out of The Diary of a Young Girl? Lots of stuff, actually.

For one, Anne’s mother is painted in a very different light, a more positive light. Secondly, Anne made her writing better when she edited her diary. She added things she’d forgotten, reworked some parts, and sometimes cut out whole sections.

Lastly, Anne was much more explicit in her sexuality. In her unedited version, we come to learn Anne likes girls. (Among other things, but that’s what I want to talk about today).

It is speculated that Anne Frank was bisexual. Now, that is a great piece of representation, however, Anne Frank is not a bisexual icon.

She died because she was Jewish. Not because of her sexuality.

When someone says “Anne Frank is a bicon,” they are forgetting why she died. Yes, people who weren’t Jewish died in the holocaust, but you should never say that in replying to Jewish people talking about it.

To be clear: it is okay to talk about the LGBT community (and many other minorities) who were killed in the holocaust. But, you should talk about that separate from talking about the Jews who were killed.

For example, it would be wrong if someone were to say “Jews were killed in the holocaust, but so were other people, so it’s not even that big of a deal.”

Anne Frank should be remembered for being Jewish, not being bisexual.

Credit : Quora 

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What makes a plane aerobatic?

The bright trails of smoke be it white or in various colours, that emanate from aircraft during flybys are a treat to watch. Whether you are seeing it live out there in the skies, or on R television, these aerobatics (a word obtained by combining aero with a form of acrobatics and used to mean loops, rolls and other spectacular feats of flying performed in one or more aircraft as a form of entertainment) are the mainstay in any aerial flying demonstration. Did you know that generating this smoke is a technical challenge and requires specific equipment for optimal performance?

First performed post-World War II, aerobatics teams have been using smoke in their flight exhibitions since then, with an upswing in usage from the second half of the 20th Century.

There are two main components to these coloured smokes being produced the smoke system and the smoke oil.

The smoke system pumps paraffin based smoke oil from a tank using injectors and out into the exhaust system. The arrangement comes in various sizes and is fitted differently based on the aircraft. These systems are engineered keeping in mind both safety and ease of use.

As for the smoke oil, they are a blend of mineral oil with a paraffin base. Smoke oils now are eco-friendly and non-toxic, and they are also highly refined in order to produce better results – completely atomised without leaving residue.

Oils are developed specifically keeping in mind the manoeuvres to be performed. The overall system ensures coloured oil is delivered at a particular pressure to the injection nozzles so that the smoke output is consistent.

All this happens at the flick of a button for the pilot who is performing the exhibition. They don’t switch it recklessly though, as the expensive nature of the entire set-up means that it has to be done judiciously.

 

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What exactly is nuclear energy?

All things – even you – are made up of billions and billions of “bits” that are smaller than anything you can imagine. These “bits” are called atoms. Atoms are the tiniest parts that something can be broken into and still be the same stuff. For example, one atom of gold is the tiniest bit of gold possible.

Special machines can split certain kinds of atoms into even smaller parts. When atoms split, they give off energy. The part of the atom that splits is called the nucleus, so the energy is called nuclear energy.

The energy given off by atoms when they are split is in the form of heat. So a machine that splits atoms can be used the same way a fuel-burning engine is used. The machine makes heat. The heat can be used to run generators that make electricity and to run other machines, too.

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