Random Articles (Page 3)
Have a deep view into what people are curious about.
๐ Pizza in North Korea
North Korea has several restaurants serving pizza. Most people in the country cannot afford pizza, and it is mostly available for the elite. Pyongyang has five restaurants that serve pizza, including Pizza Restaurant on Kwangbok Street and Italy Pizza on Mirae Scientists Street. Kim Jong Il hired Italian chefs to train North Koreans in pizza making and introduced it to the country.
Discussed on
- "Pizza in North Korea" | 2024-09-09 | 42 Upvotes 3 Comments
๐ Propfan
A propfan, also called an open rotor engine, or unducted fan, is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The design is intended to offer the speed and performance of a turbofan, with the fuel economy of a turboprop. A propfan is typically designed with a large number of short, highly twisted blades, similar to a turbofan's bypass compressor (the fan itself). For this reason, the propfan has been variously described as an "unducted fan" or an "ultra-high-bypass (UHB) turbofan."
Discussed on
- "Propfan" | 2019-09-30 | 63 Upvotes 15 Comments
๐ Stanford Bunny
The Stanford bunny is a computer graphics 3D test model developed by Greg Turk and Marc Levoy in 1994 at Stanford University. The model consists of 69,451 triangles, with the data determined by 3D scanning a ceramic figurine of a rabbit. This figurine and others were scanned to test methods of range scanning physical objects.
The data can be used to test various graphics algorithms, including polygonal simplification, compression, and surface smoothing. There are a few complications with this dataset that can occur in any 3D scan data: the model is manifold connected and has holes in the data, some due to scanning limits and some due to the object being hollow. These complications provide a more realistic input for any algorithm that is benchmarked with the Stanford bunny, though by today's standards, in terms of geometric complexity and triangle count, it is considered a simple model.
The model was originally available in .ply (polygons) file format with 4 different resolutions.
Discussed on
- "Stanford Bunny" | 2021-05-25 | 121 Upvotes 42 Comments
๐ Kunyu Wanguo Quantu
Kunyu Wanguo Quantu, printed in China at the request of the Wanli Emperor during 1602 by the Italian Catholic missionary Matteo Ricci and Chinese collaborators, Mandarin Zhong Wentao and the technical translator, Li Zhizao, is the earliest known Chinese world map with the style of European maps. It has been referred to as the Impossible Black Tulip of Cartography, "because of its rarity, importance and exoticism". The map was crucial in expanding Chinese knowledge of the world. It was eventually exported to Korea then Japan and was influential there as well, though less so than Alenio's Zhifang Waiji.
Discussed on
- "Kunyu Wanguo Quantu" | 2021-11-02 | 45 Upvotes 3 Comments
๐ VA-111 Shkval
The VA-111 Shkval (from Russian: ัะบะฒะฐะป, squall) torpedo and its descendants are supercavitating torpedoes originally developed by the Soviet Union. They are capable of speeds in excess of 200 knots (370ย km/h or 230 miles/h).
Discussed on
- "VA-111 Shkval" | 2014-03-08 | 12 Upvotes 5 Comments
๐ Squarial
The Squarial (a portmanteau of the words square and aerial) was a satellite antenna used for reception of the now defunct British Satellite Broadcasting television service (BSB). The Squarial was a flat plate satellite antenna, built to be unobtrusive and unique. BSB were counting on the form factor of the antenna to clearly differentiate themselves from their competitors at the time. At the time of development, satellite installations usually required a 90ย cm dish in order to receive a clear signal from the transmitting satellite. The smaller antenna was BSB's unique selling point and was heavily advertised in order to attract customers to their service.
๐ Phantom OS, a Russian OS where โeverything is an objectโ
Phantom OS is an operating system mostly made by Russian programmers. Phantom OS is based on a concept of persistent virtual memory, and is managed-code oriented. Phantom OS is one of a few OSes that are not based on classical concepts of Unix-like systems. Its primary goal is to achieve simplicity and effectiveness in both the operating system and applications at the same time.
Phantom is based on the principle that "Everything is an object", in contrast to the Unix-like approach of "Everything is a file".
Discussed on
- "Phantom OS, a Russian OS where โeverything is an objectโ" | 2019-04-16 | 72 Upvotes 23 Comments
๐ Rhythm 0
Rhythm 0 was a six-hour work of performance art by Serbian artist Marina Abramoviฤ in Naples in 1974. The work involved Abramoviฤ standing still while the audience was invited to do to her whatever they wished, using one of 72 objects she had placed on a table. These included a rose, feather, perfume, honey, bread, grapes, wine, scissors, a scalpel, nails, a metal bar, a gun, and a bullet.
There were no separate stages. Abramoviฤ and the visitors stood in the same space, making it clear that the latter were part of the work. The purpose of the piece, she said, was to find out how far the public would go: "What is the public about and what are they going to do in this kind of situation?"
Discussed on
- "Rhythm 0" | 2023-09-25 | 388 Upvotes 269 Comments
๐ List Of Adhesive Tapes
The following is a list of adhesive tapes with pressure-sensitive adhesives:
Discussed on
- "List Of Adhesive Tapes" | 2022-04-15 | 162 Upvotes 135 Comments