Did You Know?: TECHNOLOGY

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Showing posts with label TECHNOLOGY. Show all posts
Showing posts with label TECHNOLOGY. Show all posts

Did You Know? How To Skip Ads On Videos

Whether you are technically challenged or just want to learn more about how to do things on Facebook or the Internet, our tutorial blog offers helpful tips, easy to understand directions, with pictures to illustrate.  







A reader asked this question about how to get rid of the advertisements on videos.  We think it might be of interest to all our readers and you can read about it on one of our other blogs at this link:


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Telephones and Telephone Operators


Long before the computer-generated voice that you now hear when you dial the operator or directory assistance, there actually were real human beings called telephone operators who answered those calls.  


From the 1880s to around 1905, the calls came into telephone rooms like the one you see below. Each operator sat at their own switchboard wall and routed the calls.






Telephone rooms like this one had walls of switchboards with operators who connected calls because not many people had phone numbers in the 1880s.
Telephone rooms like this one had walls of
switchboards with operators who connected calls
because there were no phone numbers in the 1880s.


In the infancy of the telephone invention, there were huge switchboards that connected customer calls but early on, they were connecting primarily business-to-business calls until private residences had telephones installed in the late 1890s. 


There were special long-distance phones in "silence cabinets" and the customer paid for the call afterward. If he didn't pay, he was locked in the cabinet until police arrived!
There were special long-distance phones in "silence cabinets" and
the customer paid for the call afterward. If he didn't pay, he was
locked in the cabinet until police arrived!



The first residential phones were the windup (no dial) box-type phones.  Department stores and mail-order catalogues like Sears and Montgomery Ward advertised the telephones for sale to homeowners starting around 1896. Although it was an expense to buy the phones, the money that was paid to the phone company was "rental money" - the customer didn't "own" the phone.  Except for housing, most people viewed rental money as wasted money when they could own something outright.

 The first phones were pretty simple to use. I couldn't find an advertisement for a windup phone dated from the 1890s.  The closest windup phone I found was the Sears ad below from 1908 that sold two phones for $9.50 (which was $264 in 2019 dollars), but they only had a distance of up to 5 miles. Notice the weight!



Sears Roebuck's 1908 catalogue advertised this Battery-Operated phone
with a range of 50 feet up to 5 miles. So if you wanted to talk to
someone who was 20 miles away, this phone wouldn't do the job. 
 




The residential telephone didn't have a dial in the 1880s and 1890s because there were no phone numbers.  It was a two-person setup which meant that your phone had to be directly connected to the person you wanted to talk to.  Both of your phones stayed connected until one terminated the arrangement.  


To use, you simply wound the handle to the right of your phonebox which made the other phone ring. When they answered, then you were able to talk to each other uninterrupted.  Because only the two parties were connected, there were no intrusions from other people as you would a few years later on a party line. 


The downside was that you couldn't talk to anyone else on that phone. If you wanted to talk to other people, you had to get more phones.  


Around 1904 when the telephone lines were done being constructed within cities and from city to city, home phones came with dials. They were able to call multiple phones using phone numbers which were assigned around the end of 1904. But calls that were long-distance, defined as ten miles or more, were operator-assisted. They answered your call with "Number please?" then connected your call. 



Beginning in 1904, operators answered with "Number please?" and was used by all Bell Companies by 1912
Beginning in 1904, operators answered with "Number please?"
and was used by all Bell Companies by 1912


Given that there was a depression going on, telephones were a luxury and rather costly by 1877 standards. If you shared a phone number with a party line, you not only had people listen in on all your calls, but your bill was much cheaper. 

As seen in the picture below, the annual rental bill in 1877 for two telephones was $20 per year (which is $488.71 in 2019 dollars).  For a party line and two phones, the bill averaged $8.00 per year (which is $223 in 2019 dollars) to $14 per year (which is $391.50 in 2019 dollars).    


Two phones were leased at $20 in 1877 came to $488.71 in 2019 dollars)



You may remember reading in your history lessons in elementary school that Alexander Graham Bell applied for and was granted a patent for his telephone invention in 1876.

What you may have forgotten is that there were others who contributed to the invention. As with most of our modern technological conveniences, inventors of other devices had marked their place in history when they filed patents to document their contribution on various steps of the process, so Alexander Graham Bell was actually expanding on the progress made by other inventors before he invented his final product.


In 1667, British physicist Robert Hooke invented the acoustic string phone, which was a tin-can telephone similar to the toy you may have played with as a child of the 1950s and referred to as the lover's phone.

Lover's Phone, two tin cans and a piece of wire
Lover's Phone, two tin cans and a piece of wire


In 1753, Scottish scientist Charles Morrison was credited as developing a theory that each letter of the alphabet could be transmitted by wire - the first idea for a telegraph. But he didn't hold a patent on the telegraph machine that was in use from 1837 onward. That was Samuel Morse, also the inventor of Morse Code.



Morse Code was developed in 1837 by Samuel Morse, but the forerunner  was a theory developed by Charles Morrison in 1753
Morse Code was developed in 1837 by Samuel Morse, but the forerunner
was a theory developed by Charles Morrison in 1753

For over 100 years, the only form of communication was the telegraph. In 1875, Bell was experimenting with his harmonic telegraph which was used to help teach the deaf but it was his first inkling that sound could be transmitted over the wires.  In March 1876, Bell said to Mr. Watson, his assistant "Mr. Watson, come here. I want to see you."

Thomas Edison had his hand in there as did Johann Philipp Reis, Elisha Gray and those seen here.

Each man contributed something to the final invention.
Each man contributed something to the final invention.




It wasn't enough just to invent the telephone. The amount of work that went into bringing it into every home and business was astounding.  Businesses got first dibs on telephone installation, but a lot of work had to be done first - miles and miles of wiring.  

In 1877 the first telephone line was constructed from Boston, Massachusetts and Somerville, Massachusetts. 

By 1880, there were almost 48,000 telephones across the United States.  In 1881, telephone lines to Providence, Rhode Island were connected to Boston, Massachusetts.  In 1892 lines between Chicago and New York were constructed and by 1894 New York and Boston were connected.


Bell Telephone Switchboard Exchange buildings were in every neighborhood
Bell Telephone Switchboard Exchange buildings
were in every neighborhood


At the same time, the switchboards and switchboard exchanges were installed in buildings, one in nearly every neighborhood to answer the calls within the five-mile radius which was the capability of most phones at that time.   Local calls could be routed through the city by operators and they could also relay long-distance calls from one city to another. 

Switchboard Exchange 1950s
 Switchboard Exchange (1950s)


If you are 60 years old or older, you might remember the Bell Telephone Building in your neighborhood. The only way you knew what the building was for was because of the telephone company vehicles in the parking lot.  


 Bell Telephone later became AT & T, and finally, Verizon. As the computer age approached, the telephone exchange buildings were phased out.


Sears 1916, there is still no dial on the phone and the prices went up a lot.
Sears 1916, there is still no dial on the
phone yet the prices went up a lot.





As more people got phones installed in their homes, the system had to be tweaked to keep up with demand. More operators were hired to man the switchboards. I know in my city, besides healthcare and the Electric Company, the next biggest employer was Bell Telephone Company.


Switchboard operators in Seattle Washington in 1952


Although Alexander Graham Bell holds the patent for the telephone and we can see that other people contributed to the process until Bell developed the final product, since then, many people helped to improve Bell's telephone invention even better - from Thomas Edison to Steve Jobs. 


And like many other inventions past, present and future, there will always be contributors who will be credited with inventing parts of the process along the way.  When the final product is presented to the public, like Bell, Morse, and Edison, that is the guy whose name will go in the history books as the person who obtained a patent on the invention.


You can read the story of Alexander Graham Bell's years of experiments to his final invention here.


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Elevator Accidents in the 19th century

While scrolling through historical newspapers from the 1880s to 1900, we couldn't help but notice that there were an awful lot of articles about accidental deaths, most resulting in decapitation, which involved a newfangled contraption called the electric elevator.  The Otis Elevator is the most popular but it wasn't the first elevator.

Elisha Graves Otis and his two sons liked to tinker with devices, always looking for things that could make life easier. Focusing primarily on public high-rise buildings which were being built in big cities, they were experimenting with safety devices for the steam-powered elevators that were in place since 1823. Steam was changed over to hydraulics in 1835 and in 1845, hydraulics began to work in unison with counterweights and balances to increase the elevator's lifting power.

The public was deathly afraid to ride high up in the sky in elevators.  The safety devices that were invented in the following few years helped to reassure the public that the electric elevator was safe.


Elisha Graves Otis was all about making small devices to assist bigger devices and making existing machines safer or less complicated. He established the Otis Elevator Company in 1852, long before ever building his first elevator.  

The shortlist of inventions attributed to Otis and his two sons were a railway safety brake to quick-stop a locomotive, rails to move four-poster beds, devices to improve turbine operations, a hoist to lift heavy equipment, and the one that would bring him fame - a safety device which kept the cab of an electric elevator from falling if the cable broke.  

For two years, he tried getting his invention to catch on but no orders came in. He busied himself with inventing other devices until 1853 when an idea came to him.

He took his device to the 1853-1854 World's Fair held in New York and signed up as an exhibitor at the New York Crystal Palace which was constructed for the "Exhibition of Industry of All Nations."  Otis and sons built a platform which was raised high in the air, and in a death-defying demonstration, he gave the signal for the rope to be cut that lowered the elevator to safety. To his surprise, the orders from office buildings came flooding in.  

The first passenger elevator was installed in 1857 using his safety device.  However, Otis did not invent the elevator. He invented a safety device.  Elisha Otis died April 8, 1861. Just a few months before, he obtained a patent for his drawings of the safety device on January 15, 1861.  His foresight made the Otis Elevator Company a household name. 

The first electric elevator was invented by Anton Freissler in 1880, based on ideas of a German entrepreneur named Werner von Siemens who was a builder. He installed 584 electric elevators in Austria and Hungary.   

Ideas by an American naval officer/inventor and business associate of Thomas Edison named Frank Julian Sprague further developed the electric motor, electric trolleys, electric railways, and electric elevators. His company, the Sprague Electric Elevator Company, was sold to Elisha Otis in 1895.


The first office building in New York City to have passenger elevators was the Equitable Life Building which opened in 1870.

Columnists and newspaper stringers sure knew how to write a story in those days. They kept the article short,  just the facts, and they made the headline grab the reader's attention. Boy, did they ever!


Consequently, from the late 1800s to 1900, one of the most common headlines we saw while doing some research was "Beheaded By Elevator" or "Decapitated By An Elevator."
  



Passenger and freight elevators changed over to electric
Passenger and freight elevators changed over to electric 



Take a look at some of these stories and notice the various styles of how reporters wrote about bad news.  






May 9, 1880, 11 years old in elevator accident
May 9, 1880, 11-years-old



Decapitated by elevator
May 14, 1880, handyman



&




Decapitated by elevator
June 2, 1881, Mrs. Murphy





&




Decapitated by elevator
July 11, 1882, 14-year-old boy



&




Decapitated by elevator
December 15, 1883, 15-year-old boy




&




Decapitated by elevator
November 11, 1890, clothing store owner




&




Beheaded by elevator

May 29, 1891, 15-year-old boy




&




Decapitated by elevator
September 22, 1892, Mrs. Shields



&




Decapitated by elevator

March 12, 1896, grocery porter




&




Decapitated by elevator

September 18, 1896, elevator man





&

Decapitated by elevator
August 1, 1897, 13-year-old girl





&


Decapitated by elevator
May 5, 1898, 14 year old boy





&


Decapitated by elevator

June 26, 1898, elevator operator



&




Decapitated by elevator
November 29, 1900, 30-year-old man




We stopped with the year 1900 because there were about 120 more articles that were similar in content. It was amazing how many people had accidents in elevators, some caused by the victim themselves, and to see how safeguards have come such a long way since then. 

Thank you for stopping by today.








Did You Know? Gas Tanks

The placement of the gas tank on the dashboard gives the driver valuable information
The placement of the gas tank on the dashboard
gives the driver valuable information



Here's a tip that you need to know when you pull into a gas station to refuel your car.

If your vehicle was manufactured after 2010, the gas tank icon will be on your dashboard. Its placement on the gas gauge is important to understand.

If the tank icon is on the right side of your fuel gauge, the gas tank is on the right side of your car. If the tank icon is on the left side of your fuel gauge, the gas tank is on the left side of your car.

If the icon is high on the gauge, it means the tank is in the rear of the car on that side. If the icon is low on the gauge, it means the tank is in the middle of the vehicle on that side.

This is especially helpful to know when the location of the gas tank is not familiar to you, for example when you just bought a new car or when your car is a rental.

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Did You Know? Heinz Ketchup

The "57" on the Heinz Tomato Ketchup is a special spot with a special function
The "57" on the Heinz Tomato Ketchup
is on a special spot



The "57" on the Heinz Tomato Ketchup bottle has a special function.  If you tap the spot three times when the bottle is in the down position, it makes the ketchup come out.  

It's called a bottle well and many bottles have them to facilitate the product to come out of the bottle faster or to prevent gasses from building up inside and keep the bottle from exploding.


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A Most Unique Castle

 At first glance, this most unique castle looks like it was built into the side of a mountain. But it wasn't. It was built into the opening of a cave. 


Predjama Castle in Slovenia dates back to 1274 AD
Predjama Castle, Slovenia dates back to 1274 AD



Located in Slovenia, Predjama Castle dates back to 1570 AD, but it wasn't the first castle built there. It's the second. The first was built in 1274 AD.  

According to their website, the castle is set 123 meters high and was built into the side of Postojna Cave because it provided the castle with some protection, even though one would think that it is highly unlikely that the castle would ever be attacked.  But it was, in fact, multiple times.

Bats make their home in the cave and in the tunnels that run behind and underneath the castle.  They were used by knights to go on expeditions and to take refuge during attacks.  

The castle has had a few owners in its history including knights who were robber barons.   The castle was refurbished after years of laying in ruins. Today it has been used in movies, TV shows, and music videos.  It also plays host to couples for their weddings. 

The website pictures of Predjama Castle are awesome and you can see them here.

The Postojna cave pictures are just as spectacular and offers a train ride that looks thrilling.  


HOW TO TAKE A SCREENSHOT

This is not a new skill if you have been using a computer for over five years, but we do have some newer readers.  

This post is also on our Geek website and it has step by step instructions with pictures. By the time you do it twice, you will be an expert.  Have a look, comments are welcome.



Our site will teach you step by step instructions how to take a screenshot
https://2geekgirls1nerdyguy.blogspot.com


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https://2geekgirls1nerdyguy.blogspot.com/2017/08/how-to-take-screenshot-on-computer.html

The Inward Well On Bottles

The inward well at the bottom of a bottle is called a punt
The inward well is called a "Punt"



 That inward well at the bottom of your soda, ketchup, juice or wine bottle is called a "punt."  The punt makes the bottle more stable so it doesn't tip over when bumped in the fridge or on a pantry shelf. It also makes the bottle stronger so it can stand the high pressure of the fizzy contents. 


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Short Women Likely To Be Killed By Imploding Air Bags


In a news story from November 1996 in the Baltimore Sun:

When Susan Hayes skidded off the road into a drainage ditch in 1996, the air bag in her Mazda Miata slammed into her head and broke her neck.  The 5-foot-2-inch, 29-year-old Baltimore woman spent six weeks in a coma and eight weeks in intensive care. She was wearing a seat belt in the crash.


It was the air bag that caused her the most injuries. Her 4-year-old son was in the front passenger seat next to her with a seat belt, but the seat did not have an air bag option.   


While the risk that air bags pose to children has attracted national attention, that danger has overshadowed the fact that bags also can injure and kill adults, particularly short women.


NHTSA warns imploding airbags can break necks of women who are short
Imploding airbag broke Susan Hayes neck




The National Highway Traffic Safety Administration (NHTSA) has warned for some time that women, especially those over 70 who may be frail, are among the adults most at risk of being killed by air bags.

Deaths from air bags are also likely to be under-reported, partly because the NHTSA has focused on reducing the deaths of children from air bags.


Because air bags are required to pass a federal safety test involving an unbelted dummy representing a 164-pound adult male in a 30 mph crash, air bags deploy with explosive force, even in fender benders.


The air bags, which come out of the dashboard or steering column at 200 mph, have saved hundreds of lives, but the powerful devices also are blamed for the deaths of at least 47 people who would otherwise have walked away from their accidents.


You can read more about short people and the challenges of driving here:




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The Exploding Sippy Cup

The exploding Nuby light-up cup


A mother in Boise, Idaho filled a Nuby insulated light-up cup with milk and before she could hand it to her child, the cup exploded in her hands.    

The mother had to call a friend to come over and watch her children while she went to the hospital to be treated for injuries to her hands, face, and treatment for her burning throat and lungs.


The special light-up cups come with a lithium-ion battery that is installed on the bottom of the cup. They sell for about $8.00 US. The battery activates the lights that are inside the cup.


But in this case, the battery blew up.   


Malfunctioning lithium-ion batteries have been in the news when they exploded in Samsung smartphones and most recently in electric scooters. 



Luv n' care, LTD, the parent company of Nuby, asked the mother to send the cup to them so they can investigate to see if the cup was properly used.   They claim that all battery operated cups are tested and inspected before being distributed to stores.  



The mother said she had just bought the cup a few days prior and never put the cup in the microwave or the dishwasher. 



The mother told a local news station who covered the story:  “It did a lot of damage and if that was in my son's hands, I don’t even want to imagine. I really don’t.  I’m scared to death of something like this happening again with another (lithium-ion battery) product or another toy or happening to somebody else. It was super scary. I immediately couldn’t breathe – my lungs were on fire, my throat, I couldn’t stop coughing.”


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Air Pollution in North Korea


North Korea, with a population of 30 million people, has one of the worst air pollution problems in the world.  The photo below shows in the background the reason for the pollution - two large smokestacks emanating coal dust.




Coal dust from smokestacks is reason for North Korea's air pollution
Coal dust accounts for most of North Korea's air pollution




Their air pollution is so bad that their quality of air is rated as unacceptable, by every country that measures air pollution.

There are several reasons for this. 


1. North Korea relies on coal for power which creates smog in their air.  


2. Their public transportation runs 24/7 and none of their vehicles are eco-friendly.


3. They have chopped down over half of their forests to use for food, firewood and paper products so there are very few trees left in their forests.  They have not replanted any trees in over 30 years to replace what they chopped down.


4.  The water in their lakes, rivers, and streams are polluted by waste.  


5. Their crops are tainted from smog, coal, and other pollutants making it barely edible.


The North Korean government promised to rebuild forests by planting millions of trees but they would have to get the trees from other countries. Asking for outside help is not their strong point.  


Because they know how bad it is, they don't allow photographs, even for research and any photos we see in publications or on the news were likely obtained illegally.



DEATH RATES IN NEARBY COUNTRIES

In South Korea, the air pollution problem has contributed to deaths of  23.2 of every 100,000 citizens compared to North Korea's 238 per 100,000 citizens.  


China and Japan are two neighboring countries with much higher populations and far more industrial areas. China attributes 161 deaths of every 100,000 citizens and Japan says there are 24 deaths of every 100,000 citizens.  



Why should other countries care about North Korea's air pollution problem? 

Because of the air quality and ground pollution, diseases like COPD, lung cancer and other respiratory diseases are killing North Korean citizens. Coal is cheap, but it is a dirty way to supply energy. 


Until they find new ways of getting their power and decent crops to feed their people, things aren't going to get better in their country.  


The reason why other countries should care about the country's problem is because sooner as opposed to later, North Korea citizens are going to need decades and decades of outside humanitarian, medical, and financial aid to put a dent in solving their problem, including both paid and volunteer help, and imported food, eco-friendly vehicles, paper products, and other items.  



Scientists and ecologists have estimated that since it took 30 years for North Korea to get into this mess,  that it will take double, if not triple that amount of time for them to recover from it.  

This conservative estimate takes into consideration the time to replant their forests, to create ways to provide clean fuel for use in homes and factories, to replace coal, and to plant and harvest crops which for the first few years will have to be destroyed because the ground won't produce safe edible food.



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