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Q1545
who founded the cdc
Centers for Disease Control and Prevention
It works to protect public health and safety by providing information to enhance health decisions, and it promotes health through partnerships with state health departments and other organizations.
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Q1545
who founded the cdc
Centers for Disease Control and Prevention
The CDC focus national attention on developing and applying disease prevention and control (especially infectious diseases and foodborne pathogens and other microbial infections), environmental health , occupational safety and health , health promotion , injury prevention and education activities designed to improve the health of the people of the United States.
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Q1545
who founded the cdc
Centers for Disease Control and Prevention
The CDC is the United States' national public health institute and is a founding member of the International Association of National Public Health Institutes .
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
Earthquake prediction "is usually defined as the specification of the time, location, and magnitude of a future earthquake within stated limits", and particularly of "the next strong earthquake to occur in a region."
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
This can be distinguished from earthquake forecasting, which is the probabilistic assessment of general earthquake hazard, including the frequency and magnitude of damaging earthquakes, in a given area over periods of years or decades.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
This can be further distinguished from real-time earthquake warning systems , which, upon detection of a severe earthquake, can provide neighboring regions a few seconds warning of potentially significant shaking.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
To be useful, an earthquake prediction must be precise enough to warrant the cost of increased precautions, including disruption of ordinary activities and commerce, and timely enough that preparation can be made.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
Predictions must also be reliable, as false alarms and cancelled alarms are not only economically costly, but seriously undermine confidence in, and thereby the effectiveness of, any kind of warning.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
With over 7,000 earthquakes around the world each year with a magnitude of 4.0 or greater, trivial success in earthquake prediction is easily obtained using sufficiently broad parameters of time, location, or magnitude.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
However, such trivial "successful predictions" are not useful.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
Major earthquakes are often followed by reports that they were predicted, or at least anticipated, but no claim of a successful prediction of a major earthquake has survived close inquiry.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
In the 1970s there was intense optimism amongst scientists that some method of predicting earthquakes might be found, but by the 1990s continuing failure led many scientists to question whether it was even possible.
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Q1546
what major agencies are studying earthquakes
Earthquake prediction
While many scientists still hold that, given enough resources, prediction might be possible, many others maintain that earthquake prediction is inherently impossible.
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Q1547
who all has debby ryan
Debby Ryan
Deborah Ann "Debby" Ryan (born May 13, 1993) is an American actress, singer, musician, songwriter and record producer .
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Q1547
who all has debby ryan
Debby Ryan
Ryan is best known for starring as Bailey Pickett in the Disney Channel Original Series The Suite Life on Deck .
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Q1547
who all has debby ryan
Debby Ryan
In 2008, The Suite Life on Deck ranked as TV's top series among kids 6-11 and the No. 2 scripted series among tweens 9-14.
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Q1547
who all has debby ryan
Debby Ryan
Ryan started acting in professional theatres at the age of seven; in 2007 she appeared in the Barney & Friends straight-to-DVD film Barney: Let's Go to the Firehouse and then was discovered in a nationwide search by Disney.
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Q1547
who all has debby ryan
Debby Ryan
She is also known for appearing in the 2008 feature film The Longshots as Edith.
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Q1547
who all has debby ryan
Debby Ryan
In 2009, she guest starred in an episode of Wizards of Waverly Place in Wizards on Deck with Hannah Montana as Bailey Pickett along with her other cast mates from The Suite Life on Deck .
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Q1547
who all has debby ryan
Debby Ryan
Then, in 2010, she starred in the film 16 Wishes , which was the most watched cable program on the day of its premiere on the Disney Channel .
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Q1547
who all has debby ryan
Debby Ryan
16 Wishes introduced Ryan to new audiences; the movie received high viewership in the adults demographic (18-34).
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Q1547
who all has debby ryan
Debby Ryan
Soon after that, Ryan starred in the independent theatrical film, What If... , which premiered on August 20, 2010.
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Q1547
who all has debby ryan
Debby Ryan
Ryan also starred in the new Disney Channel Original movie, Radio Rebel , where she portrays the role of Tara Adams, a shy 17-year-old girl who adopts the radio personality, Radio Rebel.
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Q1547
who all has debby ryan
Debby Ryan
Released February 17, 2012.
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Q1547
who all has debby ryan
Debby Ryan
Ryan stars in the titular role in the Disney Channel Original Series , Jessie .
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Q1548
who created the tourbillon movement?
Tourbillon
Stührling Tourbillon Movement ().
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Q1548
who created the tourbillon movement?
Tourbillon
In horology , a tourbillon (; "whirlwind") is an addition to the mechanics of a watch escapement .
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Q1548
who created the tourbillon movement?
Tourbillon
Developed around 1795 by the French-Swiss watchmaker Abraham-Louis Breguet from an earlier idea by the English chronometer maker John Arnold , a tourbillon aims to counter the effects of gravity by mounting the escapement and balance wheel in a rotating cage, to negate the effect of gravity when the timepiece (thus the escapement) is stuck in a certain position.
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Q1548
who created the tourbillon movement?
Tourbillon
Originally an attempt to improve accuracy, tourbillons are still included in some expensive modern watches as a novelty and demonstration of watchmaking virtuosity.
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Q1548
who created the tourbillon movement?
Tourbillon
The mechanism is usually exposed on the watch's face to show it off.
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Q1549
what is an .msi file
Windows Installer
The Windows Installer (previously known as Microsoft Installer) is a software component used for the installation, maintenance, and removal of software on modern Microsoft Windows systems.
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Q1549
what is an .msi file
Windows Installer
The installation information, and often the files themselves, are packaged in installation packages , loosely relational databases structured as COM Structured Storages and commonly known as "MSI files", from their default file extension .
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Q1549
what is an .msi file
Windows Installer
Windows Installer contains significant changes from its predecessor, Setup API .
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Q1549
what is an .msi file
Windows Installer
New features include a GUI framework and automatic generation of the uninstallation sequence.
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Q1549
what is an .msi file
Windows Installer
Windows Installer is positioned as an alternative to stand-alone executable installer frameworks such as older versions of InstallShield and NSIS .
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Q1549
what is an .msi file
Windows Installer
Microsoft encourages third parties to use Windows Installer as the basis for installation frameworks, so that they synchronize correctly with other installers and keep the internal database of installed products consistent.
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Q1549
what is an .msi file
Windows Installer
Important features such as rollback and versioning depend on a consistent internal database for reliable operation.
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Q1549
what is an .msi file
Windows Installer
Furthermore, Windows Installer facilitates the principle of least privilege by performing software installations by proxy for unprivileged users.
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Q1553
what is a Four Lokos
Four Loko
Four Loko is a line of alcoholic beverages , originally marketed as energy drinks , sold by Phusion Projects of Chicago, Illinois .
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Q1553
what is a Four Lokos
Four Loko
Phusion operates as Drink Four Brewing Company.
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Q1553
what is a Four Lokos
Four Loko
Four Loko, the company's most popular beverage, debuted in the United States market in 2005.
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Q1553
what is a Four Lokos
Four Loko
It is now sold in 48 states, and in Canada , The Bahamas , Bolivia , Honduras , and Europe .
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Q1553
what is a Four Lokos
Four Loko
The name "Four" is derived from the original energy drink's four main ingredients: alcohol , caffeine , taurine , and guarana .
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Q1553
what is a Four Lokos
Four Loko
Four branded products have been the object of legal, ethical, and health concerns related to the company allegedly marketing them to the underaged and the purported danger of combining alcohol and caffeine .
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Q1553
what is a Four Lokos
Four Loko
After the beverage was banned in several states, a product reintroduction in December 2010 removed caffeine, taurine, and guarana as ingredients, and the malt beverage is no longer marketed as an energy drink.
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Q1555
what is a fret on a guitar
Fret
The neck of a guitar showing the nut (in the background, coloured white) and first four metal frets.
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Q1555
what is a fret on a guitar
Fret
A fret is a raised element on the neck of a stringed instrument .
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Q1555
what is a fret on a guitar
Fret
Frets usually extend across the full width of the neck.
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Q1555
what is a fret on a guitar
Fret
On most modern western fretted instruments, frets are metal strips inserted into the fingerboard .
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Q1555
what is a fret on a guitar
Fret
On some historical instruments and non-European instruments, frets are made of pieces of string tied around the neck.
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Q1555
what is a fret on a guitar
Fret
Frets divide the neck into fixed segments at intervals related to a musical framework.
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Q1555
what is a fret on a guitar
Fret
On instruments such as guitars , each fret represents one semitone in the standard western system where one octave is divided into twelve semitones.
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Q1555
what is a fret on a guitar
Fret
Fret is often used as a verb, meaning simply "to press down the string behind a fret."
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Q1555
what is a fret on a guitar
Fret
Fretting often refers to the frets and/or their system of placement.
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
There was consumption of alcohol both during and after prohibition.
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
The 18th Amendment prohibited the production, distribution and sale of alcoholic beverages in the United States and was widely supported by the American public when it went into effect in 1920.
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
The temperance movement had popularized the belief that alcohol was the major cause of most personal and social problems and prohibition was seen as the solution to the nation's poverty, crime, violence, and other ills.
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
Upon ratification of the amendment, the famous evangelist Billy Sunday said that "The slums will soon be only a memory.
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
We will turn our prisons into factories and our jails into storehouses and corncribs."
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
(Compare Christianity and alcohol .)
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
Since alcohol was to be banned and since it was seen as the cause of most, if not all, crime, some communities sold their jails .
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Q1557
where did people go and drink during the prohibition
Alcohol during and after prohibition
The nation was highly optimistic and the leading prohibitionist in the United States Congress confidently asserted that "There is as much chance of repealing the Eighteenth Amendment as there is for a hummingbird to fly to the planet Mars with the Washington Monument tied to its tail.”
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Q1558
What is a millionth of a meter
Metre
The metre (meter in American English ), (SI unit symbol: m; SI dimension symbol: L), is the fundamental unit of length in the International System of Units (SI).
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Q1558
What is a millionth of a meter
Metre
Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole (at sea level), its definition has been periodically refined to reflect growing knowledge of metrology .
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Q1558
What is a millionth of a meter
Metre
Since 1983, it has been defined as "the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second ."
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Q1560
what are geologists currently researching
Geologist
Geologists exploring Jurassic sedimentary rocks in Makhtesh Gadol , Negev Desert, Israel
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Q1560
what are geologists currently researching
Geologist
Geologists explaining the importance of volcanic ash layers to students on field in Iceland
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Q1560
what are geologists currently researching
Geologist
A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes and history that has shaped it.
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Q1560
what are geologists currently researching
Geologist
Geologists usually engage in studying geology .
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Q1560
what are geologists currently researching
Geologist
Geologists, studying more of an applied science than a theoretical one, must approach Geology using physics , chemistry and biology as well as other sciences.
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Q1560
what are geologists currently researching
Geologist
Geologists, compared to scientists engaged in other fields, are generally more exposed to the outdoors than staying in laboratories; although some geologists prefer to perform most of their studies in the lab.
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Q1560
what are geologists currently researching
Geologist
Geologists are engaged in exploration for mining companies in search of metals, oils, and other Earth resources.
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Q1560
what are geologists currently researching
Geologist
They are also in the forefront of natural hazards and disasters warning and mitigation, studying earthquakes , volcanic activity, tsunamis , weather storms, and the like; their studies are used to warn the general public of the occurrence of these events.
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Q1560
what are geologists currently researching
Geologist
Currently, geologists are also engaged in the discussion of climate change , as they study the history and evidence for this Earth process.
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Q1565
what size drill to tap 1/4 in tap
List of drill and tap sizes
Below is a comprehensive drill and tap size chart for all drills, imperial and metric , and taps up to 36.5 mm.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Modern vacuum tubes, mostly miniature style
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
In electronics , a vacuum tube, electron tube (in North America), thermionic valve, tube, or valve is a device controlling electric current through a vacuum in a sealed container.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
The container is often thin transparent glass in a roughly cylindrical shape.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
The simplest vacuum tube, the diode, is essentially an incandescent light bulb with an added electrode inside.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
When the bulb's filament is heated white-hot, electrons are "boiled" off its surface and into the vacuum inside the bulb.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
If the electrode -- called a "plate" or "anode" -- is made more positive than the hot filament, a direct current flows through the vacuum to the electrode (a demonstration of the Edison effect ).
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
As the current only flows in one direction, it makes it possible to convert an alternating current applied to the filament to direct current .
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
The introduction of a third electrode, a grid between the filament and the plate, yields another function.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
A voltage applied to the grid controls the current flowing from the filament to the plate.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Thus, it allows the device to be used as an electronic amplifier.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Vacuum tubes are thus used for rectification , amplification , switching , or similar processing or creation of electrical signals .
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
The vast majority of modern day tubes consist of a sealed container with a vacuum inside, and essentially rely on thermionic emission of electrons from a hot filament or a cathode heated by the filament.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Some exceptions to this are dealt with in the section about gas-filled tubes below.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Vacuum tubes were critical to the development of electronic technology, which drove the expansion and commercialization of radio broadcasting, television, radar, sound reinforcement , sound recording and reproduction , large telephone networks, analog and digital computers, and industrial process control .
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Although some applications had counterparts using earlier technologies such as the spark gap transmitter or mechanical computers , it was the invention of the vacuum tube with three electrodes (called a triode ) and its capability of electronic amplification that made these technologies widespread and practical.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
In most applications, solid-state devices such as transistors and other semiconductor devices have replaced tubes.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Solid-state devices last longer and are smaller, more efficient, more reliable, and cheaper than tubes.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Tubes can be fragile, sometimes generate significant unwanted heat, and can take many seconds—many minutes in critical applications—after powering on to warm to a temperature where they perform within operational tolerance.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
However, tubes still find uses where solid-state devices have not been developed, are impractical, or where a tube has superior performance, as with some devices in professional audio and high-power radio transmitters.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Tubes are still produced for such applications.
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Q1566
when did the us stop producing vacuum tubes
Vacuum tube
Tubes are less likely than semiconductor devices to be destroyed by the electromagnetic pulse produced by nuclear explosions and geomagnetic storms produced by giant solar flares.
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Q1567
what year were skittles made
Skittles (confectionery)
Skittles is a brand of fruit-flavoured sweets , currently produced and marketed by the Wm. Wrigley Jr. Company , a division of Mars, Inc.
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Q1567
what year were skittles made
Skittles (confectionery)
They have hard sugar shells which carry the letter S.
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Q1567
what year were skittles made
Skittles (confectionery)
The inside is mainly sugar , corn syrup , and hydrogenated palm kernel oil along with fruit juice , citric acid , and natural and artificial flavours .
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Q1567
what year were skittles made
Skittles (confectionery)
The confectionery has been sold in a variety of flavour collections, such as Tropical and Wild Berry.
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