Every year Romans would crucify dogs while geese sat upon purple and gold pillows and watched. This was because when the Gauls attacked Rome in 390 BCE the geese raised an alarm while the guard dogs were silent. en.wikipedia.org/wiki/Sup…
The intensity of sound is measured in decibels (dB), the decibel scale is logarithmic. Basically a 40dB sound is not twice as loud as 20dB one, but a hundred times louder. Also one alarm clock ringing at 70dB, two alarm clocks ringing together don’t hit 140dB on scale but measure 73dB. salfordacoustics.co.uk/so…
Deer in India (who are red-green colorblind) take advantage of the better-sighted langur monkeys by staying near them and learning the monkeys' alarm signals for when they spot predators which are dangerous to the deer. doi.org/10.1111/j.1439-03…
Today I learned about the Battle of Los Angeles, in which a false alarm triggered US military to open fire on the night sky after it was believed to be an invading Japanese aircraft. history.com/news/world-wa…
The largest power outage in U.S. history was caused by a software bug in an alarm system and knocked out power for most of the Northeastern U.S. and parts of Canada en.wikipedia.org/wiki/Nor…
In 2004, a woman's steel chastity belt triggered a security alarm at the metal detector. The woman explained that her husband had forced her to wear the device to prevent an extramarital affair while she was on vacation in Greece. She continued her flight to London on the pilot's authority. abc.net.au/news/2004-02-0…
The nuclear warning systems for both US and Russia aim to detect a nuclear weapons before they hit the target so that a retaliation can be launched before their own weapons are destroyed. The system has given at least 22 false alarms which could have caused a nuclear war. bbc.com/future/article/20…
The loudest bird in the world can reach 125dB and sounds like a fire alarm youtube.com/watch?v=dvK-D…
The Apollo 11 mission continued its descent to the moon even though the guidance program had problems and started sounding alarms and resetting. en.wikipedia.org/wiki/Apo…
During an interview with Stephen Hawking, the camera operator yanked a cable causing an alarm and Hawking to slump forward. Worried they had killed him, everyone rushed over to find Hawking giggling at his own joke. The alarm was from an office computer losing power. biography.com/news/stephe…
A teasmade is a machine for making tea automatically, which was once common in the UK. They generally include an analogue alarm clock and are designed to be used at the bedside, to ensure tea is ready first thing in the morning. Crude versions existed as far back as Victorian times. en.wikipedia.org/wiki/Tea…
Production of alarm clocks in the US stopped in 1942, to direct resources towards the war effort. In 1944 production was restarted due to the number of workers arriving late because broken alarm clocks, and being unable to buy new ones. en.wikipedia.org/wiki/Ala…
The Superb Lyrebird has the ability to mimic any natural and artificial sounds from their environment with astounding accuracy. In this video one imitates the sounds of a Kookaburra, camera shutter, camera with a motor drive, car alarm and chainsaw. youtu.be/mSB71jNq-yQ?repo…
In Japan there is a fire alarm that can wake deaf people by spraying wasabi in the air popularmechanics.com/tech…
Photoelectric smoke alarms are highly effective at detecting smoldering fires, provide adequate protection from flaming fires. Fire safety experts recommend installing a combination alarm, that either detect both heat and smoke or use both the ionization & photoelectric smoke sensing methods. en.wikipedia.org/wiki/Smo…
The Bopal Chemical Disaster in India, where a methyl-isocyanate leak (500 times deadlier than hydrogen cyanide) from a factory killed more than 8000 residents in one night. The MIC leak went undetected due to the factory's earlier removal of the alarm siren in order to not disturb its neighbours theguardian.com/environme…
A device called a 'Teasmade' was popular in the 60s and 70s in the UK, an alarm clock which also made tea, ensuring it was ready upon waking up. en.wikipedia.org/wiki/Tea…
When a firefighter gets injured and hasn’t moved for a set amount of time, this PASS device will emit an audible alarm of at least 95db. The purpose of this is to notify other firefighters in the vicinity to rescue the injured firefighter. youtu.be/zwzHtuyTZ_c
The fire department was not called for 32 minutes after the alarms alerted cathedral staff that Norte Dame was on fire by which time the fire had taken hold. en.wikipedia.org/wiki/Not…
Today I learned of the 1864 Libby Prison escape. 109 Union POWs escaped one night and the guards did not realize until nearly 12 hours later. It was widely held that the prison was inescapable, leading escaping prisoners to walk right past local sentinels without raising the alarm. en.wikipedia.org/wiki/Lib…
Following 2018's false alarm of a ballistic missile strike in Hawaii, a man had a near-fatal heart attack after saying what he thought was his final goodbyes to his children. en.wikipedia.org/wiki/201…
African acacia trees produce a toxic chemical when their leaves are grazed upon, and also emit gases to signal nearby trees to do the same. Giraffes try to outsmart them by grazing downwind so the trees can't alarm each other asknature.org/strategy/le…
The City of Boston still maintains a fleet of over 3,000 telegraph fire alarm stations all over the region, with an annual budget of roughly $2 million and a dozen workers keeping the system running. The system has been in continuous use since 1852! boston.com/news/local-new…
Peter Porco, after being hit in the head 16 times with an axe, woke up with his alarm and shaved, prepared breakfast, retrieved the newspaper and made his lunch all before succumbing to his injuries. youtu.be/3beEkXoZUao
No safety alarms sound and alert during the emergency on the day of the Deepwater Horizon oil rig explosion because they had been silenced to spare workers from being woken up by false alarms. bbc.com/news/world-us-can…
During the 1965 Algerian coup d'Γ©tat that overthrew Ahmed Ben Bella, army units who were moving through the streets of Algiers didn't raise alarm because they were mistaken for extras for the film "The Battle of Algiers", which was being filmed in the capital at the time. en.wikipedia.org/wiki/196…
Marine Biologist, Edith Widder created a device that mimicked the Atolla Jellyfish's alarm (when threatened the jellyfish will emit a light that signals bigger predators to its location). She placed the device in the deep sea along with a camera. To her surprise a giant squid showed up. youtube.com/watch?v=rXkOP…
Today I learned about an alarm clock which was stuck in between the walls at a Pennsylvania home, was going off every night at 7.50 EDT, for 13 years. cnn.com/2017/06/20/us/ala…
Your body has a protein called PER that determines when your body wakes up, and is the reason why you may wake up X amount of hours before your alarm - to prepare your body for the stress that the alarm causes you. mentalfloss.com/article/5…
Today I learned about the mosquito alarm, a device used to repel teenagers by emitting a high pitched sound that can only be heard by younger people en.wikipedia.org/wiki/The…
Human Alarm Clocks: Before the advent of reliable and affordable alarm clocks, British and Irish workers were woken up by a person who made sure they could get to work on time. The knocker-up used a baton to knock on clients’ doors or a long and light stick to reach windows on higher floors. notechmagazine.com/2015/0…
Japanese researchers have created a fire-alarm for the deaf. It’s a gadget that emits a wasabi mist which will wake the endangered person and get them out of the building alive! theguardian.com/science/2…
The Soviet Union did not admit that a reactor had exploded at Chernobyl until nearly three days after radiation from the disaster set off alarms at a nuclear plant in Sweden 1000 km away edition.cnn.com/WORLD/960…
In Singapore some elevators are equipped with Urine Detection Devices that detect the scent of urine, setting off an alarm and closing the doors until the police arrive to arrest the offender! goabroad.com/articles/stu…
The Lyre Bird can mimic car alarms, chainsaws, and camera shutters youtube.com/watch?v=VjE0K…
The US Navy has 6 standard alarms for specific scenarios on a submarine. Each alarm sounds different, has immediate actions and priority- collision, diving, missile emergency, missile jettison, general, and power plant casualty. A mnemonic for the order is, "Can Dead Missile Men Get Pro-Pay?" wikipedia.org/wiki/Alarms…
In the US, production of alarm clocks was allowed in 1944, despite them containing brass needed for war materials, because workers kept missing their shifts due to a critical alarm clock shortage. en.wikipedia.org/wiki/Ala…
The sound mourning doves make while flying when startled is NOT a vocalization, but a "wing whistle" that is a natural alarm system to alert other birds to potential predators celebrateurbanbirds.org/b…
The East German Stasi used psych warfare called Zersetzung against dissidents. Tactics involved breaking into homes and subtly manipulating the contents; moving furniture, altering alarms, removing pictures from walls. Many thought they were losing their minds, and had mental breakdowns. en.wikipedia.org/wiki/Zer…
People often ignore public fire alarms or fires that break out in front of them, hesitating to escape and denying any danger, because they are committed to finishing what they came to do, or they believe they have a role to be passive pdfs.semanticscholar.org/…
Before electrical and mechanical alarm clocks were common, working people used to hire "knockers-up" to wake them by banging sticks or shooting dried peas at their windows. atlasobscura.com/articles…
The Saturn V rocket carrying the Apollo 12 mission was hit twice by lightning. 36.5 seconds after launch. lightning hit as it ascended the cloud layer, setting off alarms due to guidance systems errors. 15 second later it was hit again and instruments no longer displayed meaningful information history.nasa.gov/afj/ap12…
Each Planet Fitness has a "lunk alarm" that is used to shame weightlifters who grunt loudly or drop weights. Some bodybuilders have described their policies as "discriminatory." slate.com/articles/health…
There is a security alarm system which causes vertigo, nausea, and pain in the chest. The system has been purchased by the Russian government as well as certain supermarket chains. gizmodo.com/inferno-speak…
Ed King, who played guitar for the California psychedelic band Strawberry Alarm Clock ("Incense and Peppermints") left that band and became guitar/bass player for Lynyrd Skynyrd, including writing the opening riff for "Sweet Home Alabama" and co-wrote several other of their hit songs. en.wikipedia.org/wiki/Ed_…
NYC yellow cabs and livery cars have a 4.5-inch amber flasher (aka a "trouble light") on the rear. Its serves as a way to alert outsiders that they are feeling threatened. It's like their version of a silent alarm banks use. cityroom.blogs.nytimes.co…
Before clocks, there were candle clocks, that when burned, indicated the passage of periods of time. To set an alarm, you pushed a nail into the desired point and the nail would ld fall and clank on the metal holder. en.wikipedia.org/wiki/Can…
Today I learned of The Mosquito alarm, which was used to repel young people by emitting a high frequency only audible to youngsters. But teenagers set it as a ringtone to avoid being heard by teachers en.wikipedia.org/wiki/The…
The Atolla jellyfish is bioluminescent. When attacked, it will launch a series of flashes, whose function is to draw predators who will be more interested in the attacker than itself. This has earned the animal the nickname "alarm jellyfish". en.wikipedia.org/wiki/Ato…
During WWII, the Gestapo's most wanted person was New Zealand born Allied agent Nancy Wake. Among her numerous exploits, she killed an SS soldier with her bare hands, to prevent him from raising the alarm during an undercover raid. en.wikipedia.org/?title=N…

Please note that this site uses cookies to personalise content and adverts, to provide social media features, and to analyse web traffic. Click here for more information.