Random Articles (Page 3)
Have a deep view into what people are curious about.
🔗 Swedish Torch
A Swedish torch (also Swedish candle, Finn candle, Swedish fire, Siberian tree torch or Russian tree torch; German: Schwedenfeuer) is a source of heat and light from a vertically set tree trunk, incised and burning in the middle. It became known in Europe during the 1600s and is now used by forest workers, and for leisure activities (especially in southern Germany). Due to its flat surface and good embers, it can also be used for cooking. Compared to a campfire, it is more compact, and therefore several small heat sources can be distributed over an area.
Oral tradition attributes the development of the torch to the Swedish military during the Thirty Years' War; using a saw or hacksaw or an axe, the Swedes are said to have made burning and glowing logs to warm their soldiers. This method of providing heat meant that their troops did not have to carry their own firewood with them but were able to get supplies on site, as the freshly cut, green wood can burn due to the chimney effect.
Discussed on
- "Swedish Torch" | 2022-01-08 | 14 Upvotes 2 Comments
- "Swedish Torch" | 2021-11-28 | 12 Upvotes 5 Comments
🔗 Van Eck Phreaking
Van Eck phreaking (also known as Van Eck Radiation) is a form of eavesdropping in which special equipment is used to pick up side-band electromagnetic emissions from electronic devices that correlate to hidden signals or data for the purpose of recreating these signals or data in order to spy on the electronic device. Side-band electromagnetic radiation emissions are present in (and with the proper equipment, can be captured from) keyboards, computer displays, printers, and other electronic devices.
In 1985, Wim van Eck published the first unclassified technical analysis of the security risks of emanations from computer monitors. This paper caused some consternation in the security community, which had previously believed that such monitoring was a highly sophisticated attack available only to governments; van Eck successfully eavesdropped on a real system, at a range of hundreds of metres, using just $15 worth of equipment plus a television set.
As a consequence of this research, such emanations are sometimes called "van Eck radiation", and the eavesdropping technique van Eck phreaking. Government researchers were already aware of the danger, as Bell Labs had noted this vulnerability to secure teleprinter communications during World War II and was able to produce 75% of the plaintext being processed in a secure facility from a distance of 80 feet (24 metres). Additionally the NSA published Tempest Fundamentals, NSA-82-89, NACSIM 5000, National Security Agency (Classified) on February 1, 1982. In addition, the van Eck technique was successfully demonstrated to non-TEMPEST personnel in Korea during the Korean War in the 1950s.
While Phreaking is the process of exploiting telephone networks, it is used here because of its connection to eavesdropping. Van Eck phreaking of CRT displays is the process of eavesdropping on the contents of a CRT by detecting its electromagnetic emissions.
Discussed on
- "Van Eck Phreaking" | 2021-03-23 | 127 Upvotes 60 Comments
- "Van Eck Phreaking" | 2015-12-06 | 39 Upvotes 16 Comments
🔗 Spaceship Earth
Spaceship Earth (or Spacecraft Earth or Spaceship Planet Earth) is a worldview encouraging everyone on Earth to act as a harmonious crew working toward the greater good.
Discussed on
- "Spaceship Earth" | 2021-03-14 | 127 Upvotes 95 Comments
- "Spaceship Earth" | 2020-08-23 | 11 Upvotes 3 Comments
🔗 Cabin Fever
Cabin fever refers to the distressing claustrophobic irritability or restlessness experienced when a person, or group, is stuck at an isolated location or in confined quarters for an extended period of time. A person may be referred to as stir-crazy, derived from the use of stir to mean 'prison'.
A person may experience cabin fever in a situation such as being isolated within a vacation cottage out in the country, spending long periods underwater in a submarine, or being otherwise isolated from civilization. During cabin fever, a person may experience sleepiness or sleeplessness, have a distrust of anyone they are with, or have an urge to go outside even in adverse conditions such as poor weather or limited visibility. The concept is also invoked humorously to indicate simple boredom from being home alone for an extended period of time.
Cabin fever is not itself a disease and there is no prognosis. However, related symptoms can lead the sufferer to make irrational decisions that could potentially threaten their life or the life of the group with whom they are confined. Some examples would be suicide or paranoia, or leaving the safety of a cabin during a terrible snow storm that one may be stuck in.
Discussed on
- "Cabin Fever" | 2020-03-20 | 76 Upvotes 48 Comments
🔗 List of Unexplained Sounds
The following is a list of unidentified, or formerly unidentified, sounds. All of the sound files in this article have been sped up by at least a factor of 16 to increase intelligibility by condensing them and raising the frequency from infrasound to a more audible and reproducible range.
Discussed on
- "List of Unexplained Sounds" | 2012-06-17 | 280 Upvotes 75 Comments
🔗 eBay Stalking Scandal
The eBay stalking scandal was a campaign conducted in 2019 by eBay and contractors. The scandal involved the aggressive stalking and harassment of two e-commerce bloggers, Ina and David Steiner, who wrote frequent commentary about eBay on their website EcommerceBytes. Seven eBay employees pleaded guilty to charges involving criminal conspiracies. The seven employees included two senior members of eBay’s corporate security team. Two members of eBay's Executive Leadership Team who were implicated in the scandal were not charged.
Discussed on
- "eBay Stalking Scandal" | 2025-08-10 | 12 Upvotes 2 Comments
🔗 Analysis of Competing Hypotheses
The analysis of competing hypotheses (ACH) is a methodology for evaluating multiple competing hypotheses for observed data. It was developed by Richards (Dick) J. Heuer, Jr., a 45-year veteran of the Central Intelligence Agency, in the 1970s for use by the Agency. ACH is used by analysts in various fields who make judgments that entail a high risk of error in reasoning. ACH aims to help an analyst overcome, or at least minimize, some of the cognitive limitations that make prescient intelligence analysis so difficult to achieve.
ACH was a step forward in intelligence analysis methodology, but it was first described in relatively informal terms. Producing the best available information from uncertain data remains the goal of researchers, tool-builders, and analysts in industry, academia and government. Their domains include data mining, cognitive psychology and visualization, probability and statistics, etc. Abductive reasoning is an earlier concept with similarities to ACH.
Discussed on
- "Analysis of Competing Hypotheses" | 2024-03-20 | 11 Upvotes 1 Comments
🔗 Operation Freakout
Operation Freakout, also known as Operation PC Freakout, was a Church of Scientology covert plan intended to have the U.S. author and journalist Paulette Cooper imprisoned or committed to a psychiatric hospital. The plan, undertaken in 1976 following years of church-initiated lawsuits and covert harassment, was meant to eliminate the perceived threat that Cooper posed to the church and obtain revenge for her publication in 1971 of a highly critical book, The Scandal of Scientology. The Federal Bureau of Investigation discovered documentary evidence of the plot and the preceding campaign of harassment during an investigation into the Church of Scientology in 1977, eventually leading to the church compensating Cooper in an out-of-court settlement.
Discussed on
- "Operation Freakout" | 2023-12-27 | 14 Upvotes 1 Comments
🔗 Soviet Space Dogs
During the 1950s and 1960s the Soviet space program used dogs for sub-orbital and orbital space flights to determine whether human spaceflight was feasible. In this period, the Soviet Union launched missions with passenger slots for at least 57 dogs. The number of dogs in space is smaller, as some dogs flew more than once. Most survived; the few that died were lost mostly through technical failures, according to the parameters of the test.
A notable exception is Laika, the first dog to be sent into orbit, whose death during the 3 November, 1957 Sputnik 2 mission was expected from its outset.
Discussed on
- "Soviet Space Dogs" | 2019-10-15 | 33 Upvotes 22 Comments
🔗 East German coffee crisis
The East German coffee crisis refers to shortages of coffee in the late 1970s in East Germany caused by a poor harvest and unstable commodity prices, severely limiting the government's ability to buy coffee on the world markets. As a consequence, the East German government increased its engagement in Africa and Asia, exporting weapons and equipment to coffee-producing nations.
Discussed on
- "East German coffee crisis" | 2018-10-08 | 91 Upvotes 16 Comments