Topic: Canada
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π Gimli Glider
Air Canada FlightΒ 143 was a Canadian scheduled domestic passenger flight between Montreal and Edmonton that ran out of fuel on JulyΒ 23, 1983, at an altitude of 41,000 feet (12,000Β m), midway through the flight. The crew was able to glide the Boeing 767 aircraft safely to an emergency landing at a former Royal Canadian Air Force base in Gimli, Manitoba, that had been turned into a motor racing track. This unusual aviation incident earned the aircraft the nickname "Gimli Glider".
The subsequent investigation revealed that a combination of company failures, human errors and confusion over unit measures had led to the aircraft being refuelled with insufficient fuel for the planned flight.
Discussed on
- "Gimli Glider" | 2016-12-18 | 385 Upvotes 198 Comments
- "Gimli Glider" | 2014-05-01 | 176 Upvotes 80 Comments
- "Gimli Glider: When systems go wrong." | 2009-10-23 | 26 Upvotes 9 Comments
π List of screw drives
A screw drive is a system used to turn a screw. At a minimum, it is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. The following heads are categorized based on commonality, with some of the less-common drives being classified as "tamper-resistant".
Most heads come in a range of sizes, typically distinguished by a number, such as "Phillips #00". These sizes do not necessarily describe a particular dimension of the drive shape, but rather are arbitrary designations.
Discussed on
- "List of screw drives" | 2018-05-07 | 303 Upvotes 255 Comments
π Saskatoon Freezing Deaths
The Saskatoon freezing deaths were a series of deaths of Indigenous Canadians in Saskatoon, Saskatchewan, in the early 2000s, which were confirmed to have been caused by members of the Saskatoon Police Service. The police officers would arrest Indigenous people, usually men, for alleged drunkenness and/or disorderly behaviour, sometimes without cause. The officers would then drive them to the outskirts of the city at night in the winter, and abandon them, leaving them stranded in sub-zero temperatures.
The practice was known as taking Indigenous people for "starlight tours" and dates back to 1976. As of 2021, despite convictions for related offences, no Saskatoon police officer has been convicted specifically for having caused freezing deaths.
Discussed on
- "Saskatoon Freezing Deaths" | 2024-04-14 | 81 Upvotes 15 Comments
- "Saskatoon Freezing Deaths" | 2022-08-09 | 208 Upvotes 102 Comments
π Kaktovik numerals β A base-20 number system that is visually easy too
Kaktovik numerals are a featural positional numeral system created by Alaskan IΓ±upiat.
Arabic numeral notation, which was designed for a base-10 numeral system, is inadequate for the Inuit languages, which use a base-20 numeral system. Students in Kaktovik, Alaska, invented a base-20 numeral notation in 1994 to rectify this issue, and this system spread among the Alaskan IΓ±upiat and has been considered in other countries where Inuit languages are spoken.
The image at right shows the digits 0 to 19. Twenty is written as a one and a zero (\Ι€), forty as a two and a zero (VΙ€), four hundred as a one and two zeros (\Ι€Ι€), eight hundred as a two and two zeros (VΙ€Ι€), etc.
Discussed on
- "Kaktovik Numerals" | 2023-01-25 | 180 Upvotes 70 Comments
- "Kaktovik numerals β A base-20 number system that is visually easy too" | 2021-03-04 | 39 Upvotes 2 Comments
π Anvil Firing
Anvil firing (also known as anvil launching or anvil shooting) is the practice of firing an anvil into the air with gunpowder.
In the UK, the term refers to a method of testing anvils. Black powder was poured onto the top of the anvil and ignited. If the anvil did not shatter it was deemed safe to use.
Discussed on
- "Anvil Firing" | 2019-04-06 | 174 Upvotes 89 Comments
π 1700 Cascadia Earthquake
The 1700 Cascadia earthquake occurred along the Cascadia subduction zone on January 26, 1700 with an estimated moment magnitude of 8.7β9.2. The megathrust earthquake involved the Juan de Fuca Plate from mid-Vancouver Island, south along the Pacific Northwest coast as far as northern California. The length of the fault rupture was about 1,000 kilometers (620 miles), with an average slip of 20 meters (66Β ft).
The earthquake caused a tsunami which struck the west coast of North America and the coast of Japan.
Discussed on
- "1700 Cascadia Earthquake" | 2021-05-05 | 132 Upvotes 115 Comments
π Milk Bag
A milk bag is a plastic bag that contains milk. Usually one of the corners is cut off to allow for pouring, and the bag is stored in a pitcher or jug.
A typical milk bag contains approximately 1Β L (1.8Β impΒ pt) of milk in South America, Iran, Israel, and continental European countries, while in Canada they contain 1+1β3 litres (2.3Β impΒ pt), and in India, 0.5Β L (0.9Β impΒ pt).
In the Baltic rim countries, e.g., Estonia, and some Eastern European countries, the similar bags may also be seen used for packaging yogurt or kefir.
Discussed on
- "Milk Bag" | 2023-08-28 | 71 Upvotes 125 Comments
π Pig War
The Pig War was a confrontation in 1859 between the United States and United Kingdom over the BritishβU.S. border in the San Juan Islands, between Vancouver Island (present-day Canada) and the State of Washington. The Pig War, so called because it was triggered by the shooting of a pig, is also called the Pig Episode, the Pig and Potato War, the San Juan Boundary Dispute and the Northwestern Boundary Dispute. Aside from the death of one pig, this dispute was a bloodless conflict.
Discussed on
- "Pig War (1859)" | 2022-10-20 | 25 Upvotes 11 Comments
- "Pig War" | 2019-10-03 | 84 Upvotes 28 Comments
- "Pig War (1859)" | 2017-12-25 | 22 Upvotes 6 Comments
π Vancouver Special
The Vancouver Special is an architectural style of residential houses developed in Metro Vancouver, Canada. The style was popular in the 1960s to 1980s due to ability to maximize floor space with relatively cheap construction costs.
Discussed on
- "Vancouver Special" | 2022-12-05 | 100 Upvotes 55 Comments
π Quebec Sovereignty Movement
The Quebec sovereignty movement (French: Mouvement souverainiste du QuΓ©bec) is a political movement whose objective is to achieve the sovereignty of Quebec, a province of Canada since 1867, including in all matters related to any provision of Quebec's public order that is applicable on its territory. Sovereignists suggest that the people of Quebec make use of their right to self-determination β a principle that includes the possibility of choosing between integration with a third state, political association with another state or independence β so that Quebecois, collectively and by democratic means, give themselves a sovereign state with its own independent constitution.
Quebec sovereignists believe that with such a sovereign state, the Quebec nation will be better equipped to promote its own economic, social, ecological and cultural development. Quebec's sovereignist movement is based on Quebec nationalism.
Discussed on
- "Quebec Sovereignty Movement" | 2022-07-06 | 50 Upvotes 101 Comments