Opening Doors facts

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The refrain “when one door closes, another opens" is actually an Alexander Graham Bell quote which he followed by saying "but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.”

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A woman with a ‘mutant’ gene who feels no pain and heals without scarring was discovered by scientists. She reported numerous injuries without pain, often smelling her burning flesh before noticing any injury, and could open door to new treatments.

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In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what is rough opening for doors. Here are 50 of the best facts about Opening Doors Sacramento and Opening Doors Program I managed to collect.

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The saying "when one door closes, another opens" is an Alexander Graham Bell quote, which he then followed by saying "but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us."
After her owner suffered a heart attack, a pig named LuLu saved her owner's life by squeezing through a doggy door, pushing open a gate and lay down in the middle of a nearby road until a motorist stopped and followed the pig back to the house.
The saying “when one door closes, another opens" is a Alexander Graham Bell quote which he then followed by saying "but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.”
Submarine K-219, a nuclear submarine that sank in 1986 due to a missile silo leak. It sank in 18,000ft of water, and when located 2 years later, it's missile doors had been forced open and the nuclear missiles it carried were missing.
The iconic opening sound used in Law and Order known as "The Clang" is an amalgamation of nearly a dozen sounds, including an actual gavel, a jail door slamming, and five hundred Japanese monks walking across a hardwood floor
Mars, Inc. thought E.T. to be so ugly they feared the character would frighten children and refused to allow M&Ms to be used in the movie. This opened the door to Hershey's, who took the opportunity to market Reese's Pieces.
A scene in the 1991 film "Frankie and Johnny" called for Al Pacino's character to be surprised after opening a door. In order to elicit genuine surprise, the director arranged for William Shatner and Leonard Nimoy, to appear behind the door (out of shot) in full Starfleet uniforms
In Boston, 1777, during a shortage of coffee and sugar, a crowd of over 100 angry women marched to a wealthy merchant's warehouse, demanded the keys, and grabbed him by the neck when he refused. They opened the doors, loaded up carts with coffee, and left.
28 years ago a Floridian woman opened her door to a clown and was shot. In 2014, a hair was found in the evidence. After a DNA test, the clown was found in Tennessee running a restaurant with the wife's husband. Apparently having an affair months before the murder, they were now married.
Using horizontal push bars instead of regular door knobs/handles is too prevent a crowd from smashing into a door and preventing its ability to open. Apparently it's called panic hardware

opening doors facts — What is the rough opening for bifold doors?

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opening doors fact data chart about Remote monitoring of a -80C cryo freezer shows spikes in tem — Remote monitoring of a -80C cryo freezer shows spikes in temperature when the door is opened to load samples. The spike size relates to the duration of the door being opened. Here,

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President Jimmy Carter signed a bill that created an exemption from taxation of beer brewed at home for personal or family use. Opening the door for today's craft beer brewers.

A couple adopted a chimpanzee and which learned to open doors, use keys, get dresses, water the plants, feed the horses, use a computer and drive their car too. But when he was 14 yrs old, he brutally attacked a family friend totally disfiguring her. - source

In 1993 Egyptologists sent a small rover through one of the Air Shafts of the Great Pyramid. The rover came in contact with a stone door with two copper handles attached. To this day, the door has not been opened and now one knows where it leads - source

Red color blind monkeys who underwent gene therapy by having their eyes injected with a red cone, had their color blindness cured, potentially opening a door for curing color blindness in humans.

H.H. Holmes, a 19th century serial killer in the US, opened a hotel which he had designed and built for himself specifically with murder in mind. It included soundproofed bedrooms, trap doors, walls lined with blowtorches and two incinerators. - source

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An American Huey pilot stopped the My Lai massacre and risked his own life to save Vietnamese villagers. Landing his Huey between fleeing villagers and approaching U.S. soldiers, he ordered his door gunners to open fire if the troops tried to stop him or opened fire on them.

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Poorly designed doors (doors that aren't obvious if you push, pull, turn a handle, etc to open) are called "Norman Doors" and are named after Don Norman who writes about how it should be obvious as to how everyday items function

The F-117A stealth fighter shot down by the Serbians in 1999 was picked up on radar because it had opened its internal bomb doors - the open doors increased its radar profile, allowing a SAM missile crew to get a lock on.

"Perytons" were mysterious radio signals detected only at the Parkes radio telescope. They were found to be caused by the premature opening of a microwave oven door at the visitor center.

McRefugees, people who use McDonald's 'doors always open policy' and 'live' in McDonald's restaurants due to the high living costs in Hong Kong and Japan.

Theophilus Van Kannel, the guy who invented revolving doors did so because he hated chivalry, especially the idea of opening doors for women.

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In 1980 New Mexico prison riot, prisoners in protective custody waited for 5 hours while prison gangs cut their way into the cell block with blow torches and then tortured and killed them. They could have escaped through a rear door, but the guards refused to open it.

The rotating door was created by a man in the later part of the 1800s so he wouldn't have to hold the door open for the women or get stuck holding it for everyone. An added bonus was that it reduced heating and cooling costs by 30%, making it much more energy efficient.

Robert de La Rochefoucauld, a French saboteur during WWII. He once hid explosives inside loaves of bread and blew up a Nazi munitions plant. Captured, he feigned a seizure in his cell and when a guard opened the door, hit him with a table leg, broke his neck, shot 2 other guards and escaped.

Jan Demczur, a window washer working in the World Trade Center on 9/11, became trapped in an elevator in between floors after the first plane hit. Using his sqeegee to pry open the doors, he then broke through the drywall and led the passengers out of the building moments before it collapsed.

Dutch drivers are taught to open the car door with their right hand, so they have to look over their left shoulder, allowing them to see a bicyclist before they accidentally "door" them.

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When South Korea representatives open the door at the DMZ meeting room for the North, they hold hands to prevent being pulled across the border.

No amount of radiation will escape from your microwave oven if you open the door without stopping it first - it takes just 64 nanoseconds to decay to 0.1% [PDF]

In the 1942 Cocoanut Grove fire in Boston, at least 300 people lost their lives because the doors opened inwards. This prompted the regulation that all doors in a public building must open outwards.

On August 19, 1980, a Saudi Arabian Airlines Flight carrying 301 people caught fire shortly after takeoff. The plane landed safely but when the ground crew opened the doors, everyone was already dead.

Elevator 'close door' buttons in the U.S. were made to be unresponsive or have a delayed response because of a section in the Americans with Disabilities Act (1990) that mandates the doors stay open a min. of 3 seconds to allow those with disabilities to enter/exit

Farmers only need to leave a door open for five minutes for the farm to qualify as "free-range". Apart from the "open door", no other criteria for environmental quality, number of birds, or space per bird, are defined.

When the studio behind 'Star Trek' received a letter from a builder asking how to make automatic sliding doors that opened and closed as fast as on the Enterprise, the reply explained that the doors were manually operated by an offstage crewman. If too late, cast would hit unopened doors.

When Robin Wright showed up at Rob Reiner's house to meet William Goldman, the door opened and "[Wright] was standing there in this little white summer dress, with her long blonde hair, and she had a halo from the sun. She was backlit by God. And Bill Goldman… said, 'Well, that's what I wrote.'"

In 2002, a widely-watched live TV special followed a robot as it crawled through a 5" opening in the Great Pyramid of Giza, punched a hole in a door at the end of the passage, and inserted a fiber optic camera into the hole. Behind the door was nothing but a small empty space.

Thomas Paine narrowly avoided the guillotine due to a severe fever. When a man came to chalk an X in the cell's door to mark the prisoner, the man marked the inside of the door since it was open to aid Paine's fever. When the door was later closed, no mark could be seen outside the cell.

A Dutch door is a door divided horizontally in such a fashion that the bottom half may remain shut while the top half opens. The initial purpose of this door was to keep animals out of farmhouses, or keep children inside, while allowing light and air to filter through the open top.

A cow kicked open the door on a 2-story trailer and jumped out on the way to the slaughterhouse in order to give birth to her baby girl

A 'Norman Door' is a door that requires signage to tell users whether they should push or pull to open it, since that core function is not visibly obvious from the design

Gallaudet in Washington, DC is the only university in the world designed entirely for the deaf. Its open architecture is based on lines of sight, with sliding doors to not interrupt sign language eye contact while walking, and blue walls to provide contrasting backdrops for signing.

The Roman Colosseum had 28 lifts which hoisted animals 24 ft up, then cage lids and trap doors in the arena floor opened simultaneously, unleashing beasts to fight each other or men. A lift was remade last June, ridden by a wolf who received a biscuit when released into the Colosseum.

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