In quantum mechanics, Schrödinger's cat is a thought experiment concerning quantum superposition. In the thought experiment, a hypothetical cat may be considered simultaneously both alive and dead, while it is unobserved in a closed box, as a result of its fate being linked to a random subatomic event that may or may not occur. This experiment viewed this way is described as a paradox. This thought experiment was devised by physicist Erwin Schrö
ROT13 is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the Latin alphabet.
Perpetual motion is the motion of bodies that continues forever in an unperturbed system. A perpetual motion machine is a hypothetical machine that can do work indefinitely without an external energy source. This kind of machine is impossible, since its existence would violate the first and/or second laws of thermodynamics.
Webcomics are comics published on the internet, such as on a website or a mobile app. While many webcomics are published exclusively online, others are also published in magazines, newspapers, or comic books.
The history of perpetual motion machines dates at least back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but modern theories of thermodynamics have shown that they are impossible. Despite this, many attempts have been made to construct such machines, continuing into modern times. Modern designers and proponents sometimes use other terms, such as "overunity", to describe their inventions.
Eternal September or the September that never ended was a cultural phenomenon during a period beginning around late 1993 and early 1994, when Internet service providers began offering Usenet access to many new users. Prior to this, the only sudden changes in the volume of new users of Usenet occurred each September, when cohorts of university students would gain access to it for the first time. The periodic flood of new users overwhelmed the existing culture for online forums and the ability to enforce existing norms. AOL began their Usenet gateway service in March 1994, leading to a constant stream of new users. Hence, from the early Usenet hobbyist point of view, the influx of new users that began in September 1993 appeared to be endless.
Lee Hall is an English writer and lyricist. He is best known for writing the screenplay for the film Billy Elliot (2000) and the book and lyrics for its adaptation as a stage musical of the same name. In addition, he wrote the play The Pitmen Painters (2007), and the screenplays for the films War Horse and Rocketman (2019).
The Sutro Baths was a large, privately owned public saltwater swimming pool complex in the Lands End area of the Outer Richmond District in western San Francisco, California.
Doctor Fun is a single-panel, gag webcomic by David Farley. It began in September 1993, making it one of the earliest webcomics, and ran until June 2006. Doctor Fun was part of United Media's website from 1995, but had parted ways by 2003. The comic was one of the longest-running webcomics before it concluded, having run for nearly thirteen years with over 2,600 strips. The webcomic has been compared to The Far Side.
VG Cats is a webcomic written and drawn by Canadian cartoonist Scott Ramsoomair. Published on its own website, it follows the adventures of a pair of anthropomorphic cats, who both have an interest in video games, and often play the roles of characters in popular games that are parodied in the strip.
The Ehrenfest paradox concerns the rotation of a "rigid" disc in the theory of relativity.
Schrödinger's cat is a thought experiment, usually described as a paradox, devised by Austrian physicist Erwin Schrödinger in 1935. It illustrates what he saw as absurdities in the views that other physicists had about quantum mechanics, by applying them not to microscopic objects but to everyday ones. The thought experiment presents a cat that might be alive or dead, depending on an earlier random event. In the course of developing this experiment, he coined the term Verschränkung (entanglement).
In German cuisine, Butterbrot is a slice of bread topped with butter. Also known as boterham in Dutch speaking countries, it is still considered Butterbrot or boterham even if additional toppings, such as cheese, spreads, or lunch meats, are added, as long as it begins with a slice of bread with butter.
The cat righting reflex is a cat's innate ability to orient itself as it falls in order to land on its feet. The righting reflex begins to appear at 3–4 weeks of age, and is perfected at 6–9 weeks. Cats are able to do this because they have an unusually flexible backbone and no functional clavicle (collarbone). The tail seems to help but cats without a tail also have this ability, since a cat mostly turns by moving its legs and twisting its spine in a certain sequence.
A freestyle skateboarding trick is a trick performed with a skateboard while freestyle skateboarding. Some of these tricks are done in a stationary position, unlike many other skateboarding tricks. The keys to a good freestyle contest run are variety, difficulty, fluidity, and creativity. This is an incomplete list, which includes most notable tricks.
A Usenet personality was a particular kind of Internet celebrity, being an individual who gained a certain level of notoriety from posting on Usenet, a global network of computer users with a vast array of topics for discussion. The platform is usually anonymous, although users can get celebrity status, usually by being deemed different from other posters in some way.
Toast is sliced bread that has been browned by radiant heat. The browning is the result of a Maillard reaction altering the flavor of the bread and making it crispier in texture. The firm surface is easier to spread toppings on and the warmth can help spreads such as butter reach its melting point. Toasting is a common method of making stale bread more palatable. Bread is commonly toasted using devices specifically designed for such, e.g., a toaster or a toaster oven. Toast may contain more acrylamide, caused by the browning process, which is suspected to be a carcinogen. However, claims that acrylamide in burnt food causes cancer have not been proven.
A peanut butter and jelly sandwich (PB&J) consists of peanut butter and fruit preserves spread on bread. The sandwich is popular in the United States, especially among children; a 2002 survey showed the average American will eat 1,500 peanut butter and jelly sandwiches before graduating from high school. There are many variations of the PB&J, which itself is a hybrid between a peanut butter sandwich and a jam sandwich.
The falling cat problem is a problem that consists of explaining the underlying physics behind the observation of the cat righting reflex.
The buttered toast phenomenon is an observation that buttered toast tends to land butter-side down after it falls. It is used as an idiom representing pessimistic outlooks. Various people have attempted to determine whether there is an actual tendency for bread to fall in this fashion, with varying results.
