This page will contain external links about Totoro, as they become available.My Neighbor TotoroMy Neighbor Totoro (となりのトトロ - Tonari no Totoro) is a 1988 Japanese animated movie directed by Hayao Miyazaki and produced by Studio Ghibli. Troma Films produced a 1993 dub of the film co-produced by Jerry Beck. It was released on VHS and DVD by Fox Home Video. Troma and Fox's rights to this version expired in 2004. An ani-manga version of My Neighbor Totoro was published in English by Viz Communications starting on November 10, 2004. The film will be re-released by Disney on March 7, 2006. It features a new dub cast. The DVD release will be the first version of the film in the United States to include both Japanese and English language tracks, as Fox did not have the rights to the Japanese audio track for their version. Characters
PlotSpoiler warning: Plot and/or ending details follow. My Neighbor Totoro.The movie is a slow-moving yet fascinating portrayal of Japanese rural life. It is set during a summer of the 1950s. A university professor from the city and his two daughters move into an old house near a forest, while his wife recovers from tuberculosis in a nearby convalescence home. His daughters discover "soot sprites", which their father rationalizes as makkurokurosuke — an optical illusion seen when moving from light to dark places (glossed as dust bunnies in the 1993 English dub; in the Disney version they are called "Soot Gremlins".). Mei discovers a small Totoro, which leads her to find a large forest spirit living in a hollow under a Camphor Laurel by a small jinja. Mei names it Totoro. Her father tells her that this is the "King of the Forest". Not everyone can see the spirits of the forest, only the pure of heart. Mei is enchanted with them and determined to find the King of the Forest. One rainy night, while the girls are waiting for their father's bus which is running late, they encounter the giant Totoro who is looking rather forlorn with only a leaf for protection against the rain. When Satsuki gives him her umbrella, he's delighted at both the shelter and the sounds it makes as water hits it. This begins a series of encounters as the spirits allow the children to partake in their nightly activities. Later, Mei and Satsuki are disappointed to learn that their mother's planned homecoming visit that upcoming weekend has been postponed because mother's condition has worsened. Satsuki understands why the visit was cancelled, but Mei does not, and a frustrated Satsuki yells at Mei and the girls end up not speaking to each other for several hours. Then, Mei gets lost while trying to bring an ear of healthy corn to her mother at the hospital, and a frantic Satsuki runs everywhere searching for her. Satsuki and the villagers get a major scare when a girl's sandal is found in a pond and they begin to fear that Mei has drowned, but Satsuki confirms that the sandal is not Mei's. Satsuki finally seeks Totoro's help. He is delighted to be of assistance, and with his help Mei is quickly found. The movie features the Catbus, a grinning feline bus summoned by Totoro which rescues Mei and whisks her and Satsuki over the countryside to see their mother in hospital. When the cat bus finally leaves them it fades into the evening shadows, in the manner of Lewis Carroll's Cheshire cat. In the movie's final scene, Professor and Mrs. Kusakabe discover Mei's ear of corn on the windowsill of Mrs. Kusakabe's hospital room, carved with the inscription "To Mommy," as the girls and the Totoros watch from a nearby tree, happy that mother seems to be feeling better. Trivia
Credits
CastThe movie stars the following actors (listed in (Disney) English version/(Streamline) English version/Japanese version format):
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The movie stars the following actors (listed in (Disney) English version/(Streamline) English version/Japanese version format):. In 1887 the Michelson-Morley experiment, using an interferometer to attempt to detect the change in the speed of light caused by the Earth moving with respect to the aether, was a famous null result, showing that there really was no static, pervasive medium throughout space and through which the Earth moved as though through a wind. Kusakabe's hospital room, carved with the inscription "To Mommy," as the girls and the Totoros watch from a nearby tree, happy that mother seems to be feeling better. This evolved into the luminiferous aether of the 19th century, but the idea was known to have significant shortcomings - specifically that if the Earth is moving through a material medium, the medium would have to be both extremely tenuous (because the earth is not being detectably slowed in its orbit), and extremely rigid (because vibrations propagate so fast). Kusakabe discover Mei's ear of corn on the windowsill of Mrs. In the 17th century, theories of the nature of light had required the idea of an aethereal medium which would be the medium to convey waves of light (Newton relied on this idea to explain refraction and radiated heat). In the movie's final scene, Professor and Mrs. This led to the development of the vacuum tube. When the cat bus finally leaves them it fades into the evening shadows, in the manner of Lewis Carroll's Cheshire cat. A number of electrical properties become observable at this vacuum level, and this renewed interest in vacuum. The movie features the Catbus, a grinning feline bus summoned by Totoro which rescues Mei and whisks her and Satsuki over the countryside to see their mother in hospital. The study of vacuum then lapsed until 1855 when Heinrich Geissler invented the mercury displacement pump and achieved a record vacuum of about 0.1 Torr. He is delighted to be of assistance, and with his help Mei is quickly found. In 1654, Otto von Guericke conducted his famous Magdeburg hemispheres experiment, showing that teams of horses could not separate two hemispheres from which the air had been evacuated. Satsuki finally seeks Totoro's help. Robert Boyle later conducted experiments on the properties of vacuum. Satsuki and the villagers get a major scare when a girl's sandal is found in a pond and they begin to fear that Mei has drowned, but Satsuki confirms that the sandal is not Mei's. Some people believe that although Torricelli produced the first vacuum, it was Blaise Pascal who recognized it for what it was. Then, Mei gets lost while trying to bring an ear of healthy corn to her mother at the hospital, and a frantic Satsuki runs everywhere searching for her. Following work by Galileo, Evangelista Torricelli argued in 1643 that there was a vacuum at the top of a mercury barometer. Satsuki understands why the visit was cancelled, but Mei does not, and a frustrated Satsuki yells at Mei and the girls end up not speaking to each other for several hours. Opposition to the idea of a vacuum existing in nature continued into the Scientific Revolution, with scholars such as Paolo Casati taking an anti-vacuist position. Later, Mei and Satsuki are disappointed to learn that their mother's planned homecoming visit that upcoming weekend has been postponed because mother's condition has worsened. This speculation became irrelevant after the Paris condemnations of Bishop Tempier, which required there to be no restrictions on the powers of God, which led to the conclusion that God could create a vacuum if he so wished. This begins a series of encounters as the spirits allow the children to partake in their nightly activities. There was much discussion of whether the air moved in quickly enough as the plates were separated, or, following William Burley whether a 'celestial agent' prevented the vacuum arising—that is, whether nature abhorred a vacuum. When Satsuki gives him her umbrella, he's delighted at both the shelter and the sounds it makes as water hits it. Medieval thought experiments into the idea of a vacuum considered whether a vacuum was present, if only for an instant, between two flat plates when they were rapidly separated. One rainy night, while the girls are waiting for their father's bus which is running late, they encounter the giant Totoro who is looking rather forlorn with only a leaf for protection against the rain. The absence of anything implied the absence of God, and hearkened back to the void prior to the story of creation in the book of Genesis. Mei is enchanted with them and determined to find the King of the Forest. In the Middle Ages, the idea of a vacuum was thought to be immoral or even heretical. Not everyone can see the spirits of the forest, only the pure of heart. Later Greek philosophers thought that a vacuum could exist outside the cosmos, but not inside it. Her father tells her that this is the "King of the Forest". Similarly, Aristotle considered the creation of a vacuum impossible—nothing could not be something. Mei names it Totoro. He believed that all physical things were instantiations of an abstract Platonic ideal, and could not imagine an "ideal" form of a vacuum. Mei discovers a small Totoro, which leads her to find a large forest spirit living in a hollow under a Camphor Laurel by a small jinja. Plato found the idea of a vacuum inconceivable. His daughters discover "soot sprites", which their father rationalizes as makkurokurosuke — an optical illusion seen when moving from light to dark places (glossed as dust bunnies in the 1993 English dub; in the Disney version they are called "Soot Gremlins".). Ancient Greek philosophers did not like to admit the existence of a vacuum, asking themselves "how can 'nothing' be something?". A university professor from the city and his two daughters move into an old house near a forest, while his wife recovers from tuberculosis in a nearby convalescence home. Historically, there has been much dispute over whether such a thing as a vacuum can exist. It is set during a summer of the 1950s. String theory is believed to be analogous to quantum field theory but one with a huge number of vacua - with the so-called anthropic landscape. The movie is a slow-moving yet fascinating portrayal of Japanese rural life. If the theory is obtained by quantization of a classical theory, each stationary point of the energy in the configuration space gives rise to a single vacuum. . In free (non-interacting) quantum field theories, this state is analogous to the ground state of a quantum harmonic oscillator. The DVD release will be the first version of the film in the United States to include both Japanese and English language tracks, as Fox did not have the rights to the Japanese audio track for their version. In quantum field theory and string theory, the term "vacuum" is used to represent the ground state in the Hilbert space, that is, the state with the lowest possible energy. It features a new dub cast. The best support for vacuum fluctuations is the Casimir effect. The film will be re-released by Disney on March 7, 2006. Vacuum fluctuations may also be related to the so-called cosmological constant in the theory of gravitation, if indeed this entity were to be observed in nature on a macroscopic scale. An ani-manga version of My Neighbor Totoro was published in English by Viz Communications starting on November 10, 2004. While most agree that this represents a significant part of particle physics, it is a concept that would benefit from a deeper understanding than currently available. Troma and Fox's rights to this version expired in 2004. This is called vacuum fluctuation. It was released on VHS and DVD by Fox Home Video. The lowest possible energy state is called the zero-point energy and consists of a seething mass of virtual particles that have brief existence. Troma Films produced a 1993 dub of the film co-produced by Jerry Beck. More fundamentally, quantum mechanics predicts that vacuum energy can never be exactly zero. My Neighbor Totoro (となりのトトロ - Tonari no Totoro) is a 1988 Japanese animated movie directed by Hayao Miyazaki and produced by Studio Ghibli. Even the space between molecules is not a perfect vacuum. Frank Welker/Hitoshi Takagi/Hitoshi Takagi: Totoro. Each atom exists as a probability function of space, which has a certain non-zero value everywheres in a given volume. Pat Carroll/Natalie Core/Tanie Kitabayashi: Nanny. Another reason that perfect vacuum is impossible is the Heisenberg uncertainty principle which states that no particle can ever have an exact position. Kusakabe. If this soup of photons is in thermodynamic equilibrium with the walls, it can be said to have a particular temperature, as well as a pressure. Lea Salonga/Alexandra Kenworthy/Sumi Shimamoto: Mrs. One reason is that the walls of a vacuum chamber emit light in the form of black-body radiation: visible light if they are at a temperature of thousands of degrees, infrared light if they are cooler. Timothy Daly/Steve Kramer/Shigesato Itoi: Professor Kusakabe. Even an ideal vacuum, thought of as the complete absence of anything, will not in practice remain empty. Elle Fanning/Cheryl Chase/Chika Sakamoto: Mei Kusakabe. 1913, p.720). Dakota Fanning/the late Lisa Michelson/Noriko Hidaka: Satsuki Kusakabe. (See "Polar Magnetic Phenomena and Terrella Experiments", in The Norwegian Aurora Polaris Expedition 1902-1903 (publ. The 2005 World Expo in Japan featured a "Totoro" house which was a recreation of the house in which Satsuki and Mei lived in the movie. It does not seem unreasonable therefore to think that the greater part of the material masses in the universe is found, not in the solar systems or nebulae, but in "empty" space. (TCM aired the dub as well as the original Japanese with English subtitles.). We have assumed that each stellar system in evolutions throws off electric corpuscles into space. The Turner Classic Movies cable television network held the television premiere of Disney's new English dub on January 19, 2006, as part of the network's January salute to Hayao Miyazaki. He wrote: "It seems to be a natural consequence of our points of view to assume that the whole of space is filled with electrons and flying electric ions of all kinds. The world premiere for the Disney version was on October 23, 2005 after the premiere of Kiss, Kiss, Bang, Bang. In 1913, Norwegian explorer and physicist Kristian Birkeland may have been the first to predict that space is not only a plasma, but also contains "dark matter". The Disney version is slated for DVD release on March 7, 2006, but it appeared in the 2005 Hollywood Film Festival and on television prior to this. The deep vacuum of space could make it an attractive environment for certain processes, for instance those that require ultraclean surfaces. Fox and Troma's rights to the film expired in 2004. The idea of using this wind with a solar sail has been proposed for interplanetary travel. In 1993, Fox released the first english version of "My Neighbor Totoro", produced by John Daly and Derek Gibson (the producers of The Terminator) with co-producer Jerry Beck. Spacecraft can be buffeted by solar winds, but planets are too massive to be affected. It is believed Hayoa Miyazaki made the film because he was tired of good-and-evil conflicts, and decided it was time just to have fun. Beyond planetary atmospheres, the pressure from photons and other particles from the sun become significant. In the Disney dub, they are referred to as "Soot Gremlins". [2]. In the word "makkurokurosuke" (used when calling the 'Soot spirits' in the Fox dub), makkurokuro would mean "pitch black black" and "suke" is a common element in boys names. Studies have discovered that some satellites retrieved from orbit are coated with a very thin layer of urine and fecal matter evidently released from Russian and US space missions. In limited stores (in North America and Japan), collectable "My Neighbor Totoro" toys are on sale. The atmosphere in Low Earth Orbit is increasingly being polluted with man-made debris. In fact, he asserted that the girls would never see the Totoros again (chiefly because he believed that if the girls retreated into the world of the Totoros, they would never return to their own world), but that the Totoros would always be around and watching over them. Pavilion reproduction of Satsuki & Mei’s House in Japan. . Most Earth satellites operate in this region, and they need to fire their engines every few days to maintain orbit. During the closing credits, Miyazaki purposely inserted art of Satsuki and Mei playing with other human children and not with the Totoros. In Low Earth Orbit (about 300 km altitude) the atmospheric density is still sufficient to produce significant drag on satellites. In fact, Gainax reportedly invited the animator who did the original key animation for Totoro to work on that scene, although they never revealed the animator's name. The density of gas decreases with distance from the object. The character of Totoro made a cameo appearance in one episode of the Gainax TV series Kareshi Kanojo no Jijo (His and Her Circumstances), which was likely director Hideaki Anno's way of paying tribute to Miyazaki (Anno worked as a key animator on Nausicaa of the Valley of the Wind in 1984 and considers Miyazaki a mentor). Stars, planets and moons keep their atmosphere by gravitational attraction, so atmospheres have no firm boundary. In the Japanese version, their father's position in his university is not explicitly given by Satsuki as in the English dub. Neither these photons nor the neutrinos produce a significant interaction with matter, so stars, planets and spacecraft move freely in this near perfect vacuum of interstellar space. Satsuki is the old Japanese name for the month of May, and Mei's name comes from the English name. The current temperature is about 3 K, being merely 3 degrees above the absolute zero of temperature. Satsuki and Mei were both born in the month of May. All of the observable universe is also filled with large numbers of photons, the so-called cosmic background radiation, and quite likely a correspondingly large number of neutrinos. Ken Jennings, the winner of the most games in the history of the TV game show Jeopardy!, carries a small plush "Totoro" figure in his pocket for good luck. A perfect vacuum is an ideal state that cannot practically be obtained in a laboratory, nor even in outer space, where there are a few hydrogen atoms per cubic centimeter at 10−14 Pascal or 10−16 Torr. Satsuki and Mei's mother's implied suffering from spinal tuberculosis (also known as Pott's disease) is somewhat autobiographical, as Hayao Miyazaki's mother suffered from the same illness. The properties of the vacuum remain largely unknown. Bake neko are mentioned in several Ghibli films. It is cold and has no friction. The Cat Bus is a bake neko that saw a bus and decided to become one. Much of outer space has the density and pressure of an almost perfect vacuum. The Cat Bus originates from the Japanese belief that if a cat grows old enough it gains magical shape-changing powers and is called a bake neko. The lowest pressures currently achievable in laboratory are about 10-13 Pa. Incidentally, the late Yoshifumi Kondo provided character designs for both films. Vessels lined with a highly gas-permeable material such as palladium (which is a high-capacity hydrogen sponge) create special outgassing problems. Another theory is that "Grave of the Fireflies" (directed by Miyazaki's longtime colleague Isao Takahata) was believed to be too depressing for audiences as a stand-alone product, and thus needed a lighter animation to accompany it. Your system may be able to evacuate nitrogen, (the main component of air,) to the desired vacuum, but your chamber could still be full of residual atmospheric hydrogen and helium. My Neighbor Totoro was released as a double feature with Grave of the Fireflies. There are two theories for this: one was that Totoro would not be successful. Smaller molecules can leak in more easily and are more easily absorbed by certain materials, and molecular pumps are less effective at pumping gases with lower molecular weights. The main Totoro has become a mascot for Studio Ghibli, gracing the studio's logo at the start of their films. The impact of molecular size must be considered. The name Totoro is Mei's mispronunciation of "tororu", Japanese for troll, which she saw in a story book (Three Billy Goats Gruff) and decided was the same kind of creature. The porosity of the metallic chamber walls may have to be considered, and the grain direction of the metallic flanges should be parallel to the flange face. Catbus or Nekobasu - a cat that has become a bus. Some oils and greases will boil off in extreme vacuums. "Nanny" - Kanta's grandmother, who sometimes takes care of the girls. The water absorption of aluminium and palladium becomes an unacceptable source of outgassing, and even the absorptivity of hard metals such as stainless steel or titanium must be considered. Kanta - A preteen boy of their village, ambivalent towards Satsuki. In ultra-high vacuum systems, some very odd leakage paths and outgassing sources must be considered. Small Totoro (Chibi Totoro) - The white, smallest (about 20 centimeters tall) one, with the power of invisibility. Some systems are cooled well below room temperature by liquid nitrogen to shut down residual outgassing and simultaneously cryopump the system. Looks very similar to King Totoro. Once the bulk of the outgassing materials are boiled off and evacuated, the system may be cooled to lower vapour pressures and minimize residual outgassing during actual operation. Medium Totoro (Chū Totoro) - The blue, medium-size (about 60 centimeters tall) one. If necessary, this outgassing of the system can also be performed at room temperature, but this takes much more time. Ō in that case means "large" but the English dub calls that Totoro "King Totoro". The system is usually baked, preferably under vacuum, to temporarily raise the vapour pressure of all outgassing materials in the system and boil them off. She tried to say "tororu", the Japanese word for troll. Ultra-high vacuum systems are usually made of stainless steel with metal-gasketed conflat flanges. Mei has a habit of mispronouncing things. On a larger scale, the principles are the same as in a Cryomodule. King Totoro (Ō Totoro) - The grey, friendly forest spirit who is the largest of the three (at least 3 meters tall); when someone says "totoro", they are usually referring to him. Cryopumping incorporates the use of introducing cryogenics and a vacuum system. Totoro - 3 Totoro appear in the film:
Mei Kusakabe - Satsuki's younger sister, pre-school age (4 years old). Even higher vacuums are possible, but they generally require custom-built equipment, strict operational procedures, and a fair amount of trial-and-error. Satsuki Kusakabe - An 11-year-old girl. With careful design and operation, 1μPa is possible. With these standard precautions, vacuums of 1 mPa are easily achieved with off-the-shelf molecular pumps. As a result, many materials that work well in low vacuums, such as epoxy, will become a problematic source of outgassing when attempting to achieve high vacuums. All materials, solid or liquid, have a small vapour pressure, and their outgassing becomes important when the vacuum pressure falls below this vapour pressure. The system must be clean and free of organic matter to minimize outgassing. High vacuum systems generally require metal chambers with metal O-ring seals such as Klein flanges or ISO flanges. As with mechanical pumps, the base pressure will be reached when leakage, outgassing, and backstreaming equal the pump speed, but now minimizing leakage and outgassing to a level comparable to backstreaming becomes much more difficult. Both of these pumps will stall and fail to pump if exhausted directly to atmospheric pressure, so they must be exhausted to a lower grade vacuum created by a mechanical pump. Diffusion pumps blow out molecules with jets of oil, while turbomolecular pumps use high speed fans. Both types of pumps blow out gas molecules that diffuse into the pump. The two main types of molecular pumps are the diffusion pump and the turbomolecular pump. In high vacuum, however, pressure gradients have little effect on fluid flows, and molecular pumps can attain their full potential. Since there is no seal, a small pressure at the exhaust can easily force flow backstream through the pump; this is called stall. They do this at the expense of the seal between the vacuum and their exhaust. Molecular pumps sweep out a larger area than mechanical pumps, and do so more frequently, making them capable of much higher pumping speeds as measured in volume per time. This regime is generally called high vacuum.. When the distance between the molecules increases, the molecules interact with the walls of the chamber more often than the other molecules, and molecular pumping becomes more effective than compression pumping. At atmospheric pressure and mild vacuums, molecules interact with each other and push on their neighboring molecules in what is known as viscous flow. Matter flows differently at different pressures based on the laws of fluid dynamics. Fortunately, once the pressure has dropped below 1 kPa or so, another vacuum pumping technique becomes possible. Better pumping technologies must be used to go beyond this barrier. Adding more pumps in parallel or bigger pumps of the same type can still improve the pump-down speed, but they will not reduce the base pressure below ultimate. In this situation, the vacuum will approach the pump's ultimate pressure - the best vacuum that this type of pump can achieve under ideal conditions. However, there is a point where backstream leakage through the pump and outgassing of the pump oils become the dominant mass flows into the chamber. If the dominant mass flow into the vacuum system is chamber leakage or outgassing of materials under vacuum, then the vacuum can be improved simply by installing bigger pumps with a higher volume flow rate. The base pressure of a rubber- and plastic-sealed piston pump system is typically 1 to 50 kPa, while a scroll pump might reach 10 Pa and a rotary vane oil pump with a clean and empty metallic chamber can easily achieve 0.1 Pa. Outgassing can be reduced by desiccation prior to vacuum pumping. When the pump's mass flow drops to the same level as the mass flows into the chamber, the system asymptotically approaches a constant pressure called the base pressure. Evaporation and sublimation into a vacuum is called outgassing, and the most common source is water absorbed by materials in the chamber. Meanwhile, the leakage rates, evaporation rates, and sublimation rates produce a constant mass flow into the system. So although the pumping speed remains constant when measured in litres/second, it drops exponentially when measured in kilograms/second. A mechanical vacuum pump moves the same volume of gas with each cycle, but as the chamber's pressure drops, this volume contains less and less mass. The pump's cavity is then sealed from the chamber, opened to the atmosphere, and squeezed back to a minute size. Because of the pressure differential, some air from the chamber is pushed into the pump's small cavity. Inside the pump, a mechanism expands a small sealed cavity to create a deep vacuum. This is the principle behind most mechanical vacuum pumps. By repeatedly closing off a compartment of the vacuum and exhausting it, it is possible to pump air out of a chamber of fixed size in a manner analogous to pumping a milkshake out of a glass. For example, your muscles expand your lungs to create a partial vacuum inside them, and air rushes in to fill the vacuum. The easiest way to create an artificial vacuum is to expand the volume of a container. Astrophysicists prefer to use density to describe these environments, in units of particles per cubic metre. In interplanetary and interstellar space, isotropic gas pressure is insignificant when compared to solar pressure, solar wind, and dynamic pressure. This vacuum state is called high vacuum, and the study of fluid flows in this regime is called particle gas dynamics. When the MFP is greater than the chamber, pump, spacecraft, or other objects present, the continuum assumptions of fluid mechanics do not apply. As gas pressure decreases, the mean free path (MFP) of the gas molecules increases. Here, 29.92 inHg means perfect vacuum. Thus a vacuum of 26 inHg is equivalent to a pressure of (29.92 - 26) or 3.92 inHg. This means that the pressure in vacuum, when specified in inches of mercury, is equal to the specified inches of mercury subtracted from 29.92. For commercial purposes, vacuum is often measured in inches of mercury (inHg). It is often also measured using the barometric scale, or as a percentage of atmospheric pressure in bars or atms. The SI unit of pressure is the pascal (abbreviation Pa), but vacuum is usually measured in millimeters of mercury (mmHg) or Torr, with 1 mmHg or 1 Torr equaling 133.3223684 pascals. Engineers measure the degree of vacuum in units of pressure. In engineering, a vacuum is any region where the gas pressure is less than atmospheric pressure. The antithesis of a vacuum, which is also an ideal unachievable state, is called a plenum. A complete characterization of the physical state would require further parameters, such as temperature. Physicists use the term partial vacuum to describe real-life non-ideal vacuum. In modern day usage vacuum is considered to exist in an enclosed space or chamber, when the pressure of gaseous environment is lower than atmospheric pressure (760 Torr or 101 kPa), or has been reduced as much as necessary to prevent the influence of some gas on a process being carried out in that space. A perfect vacuum is an ideal state that cannot practically be obtained in a laboratory, nor even in outer space where there are a few hydrogen atoms per cubic centimeter at 10−14 pascal or 10−16 torr. Vacuum ranges do not have universally agreed definitions and often depend on the size of the vacuum chamber, but a typical distribution is as follows:. . A perfect vacuum with a gaseous pressure of absolute zero is a philosophical concept with no physical reality; see sections below on Vacuum in Space and The Quantum Mechanical Vacuum. vacua) which means "empty," but space can never be perfectly empty. The root of the word vacuum is the Latin word vacuus (pl. For other uses, see vacuum cleaner, vacuum exercise and Vacuum (musical group).'. Converting them to solids by electrically combining them with other materials, called ion pumping. Converting the molecules of gas to their solid phase by freezing them, called cryopumping or cryotrapping. light bulb. vacuum tube. vacuum welding. process purging. ultra-clean inert storage. adhesive preparation. vacuum deposition as in semiconductor fabrication. thermal insulation as in a thermos. freeze drying. Interstellar space = approximately 1 fPa (10−17 Torr) [1]. Pressure on the Moon = approximately 1 nPa (10−11 Torr). Cryopumped MBE chamber = 100 nPa to 1 nPa (10−9 Torr to 10−11 Torr). Near earth outer space = approximately 100 µPa (10−6 Torr). Mechanical vacuum pump = approximately 100 Pa to 100 µPa (1 Torr to 10−6 Torr). Mechanical water-sealed liquid ring vacuum pump = approximately 3.2 kPa (24 Torr). Vacuum cleaner = approximately 80 kPa (600 Torr). Atmospheric pressure = variable, but standardised at 101.325 kPa (760 Torr) or 760 mm of mercury. |