| 单词 | vacuum chamber |
| 例句 | He was ready with a freshly designed vacuum chamber, eleven inches in diameter, when the new magnet arrived on July 3. Big Science 2015-07-07T00:00:00Z He started from scratch, replacing Edlefsen’s lumps of metal and sealing wax with a vacuum chamber fashioned from brass in the shape of a flat cylinder four inches in diameter. Big Science 2015-07-07T00:00:00Z His measurements indicated that he had accelerated ions to 80,000 volts by spiraling them around the vacuum chamber forty-one times, thereby delivering eighty-two resonant jolts. Big Science 2015-07-07T00:00:00Z He placed the responsibility for fashioning a suitable new vacuum chamber in Livingston’s hands, and then vanished from the laboratory to go “angling for funds and other support,” Livingston recalled. Big Science 2015-07-07T00:00:00Z The Rad Tab called the process “snouting,” after the pig-snout shape of the tube that was to carry the beam from the vacuum chamber and out into the air. Big Science 2015-07-07T00:00:00Z He broke open the vacuum chamber and pulled off the tungsten grids by hand. Big Science 2015-07-07T00:00:00Z Livingston took the opportunity of Ernest’s absence to make a subtle change in the vacuum chamber’s design on his own. Big Science 2015-07-07T00:00:00Z For example, in 1965 a technician inside a vacuum chamber at Johnson Space Center in Houston accidentally depressurized his space suit by disrupting a hose. Can we survive in space unprotected? 2013-04-08T15:53:00Z The U-Md. accelerator remains in the early stages, with the vacuum chamber, ion source, magnetic field and radio frequency system still in the design phase. U-Md. professor hooks students on this particle accelerator — by building one 2016-09-07T04:00:00Z Our conversation curled and twisted in front of my eyes like smoke in a vacuum chamber. True secrets of psychedelics: Are they everything they’re cracked up to be? 2014-06-08T04:00:00Z “It’s a very, very thin layer. They put it in a vacuum chamber, then evaporate the aluminum,” said Mr. Shetty. What Is Glitter? 2018-12-21T05:00:00Z Low-e coatings can be “hard coat,” meaning they were sprayed onto the molten glass as it was formed into sheets, or “soft coat,” applied later in a vacuum chamber. Cloudy double-pane windows are to be expected with time 2021-01-08T05:00:00Z For this purpose, the scientists use an ultracold quantum gas consisting of lithium and potassium atoms in a vacuum chamber. Physicists simulate interacting quasiparticles in ultracold quantum gas 2023-10-26T04:00:00Z The lasers shoot through the windows of the vacuum chamber, cooling the ions and operating the qubits. What’s a Qubit? 3 Ways Scientists Build Quantum Computers 2023-09-28T04:00:00Z The other table holds an “ultrahigh” vacuum chamber made of steel with a vacuum pressure less than that of low-Earth orbit, along with hundreds more optical components. Physicists Make Matter out of Light to Find Quantum Singularities 2023-06-18T04:00:00Z He remembers testing the moon buggy in a special vacuum chamber with high-intensity, artificial sunlight. Take your kid to this park near Seattle. Leave with an astronaut 2023-06-15T04:00:00Z So the whole rig resides in a vacuum chamber, and an elaborate suspension system supports each mirror. Damage delays restart of Italy's giant gravitational wave detector 2023-05-16T04:00:00Z The balance will sit inside their vacuum chamber, a cylindrical container of “nothing” that will be nested in several layers of insulation to keep it extremely cold and protected from the outside environment. How Much Does ‘Nothing’ Weigh? 2023-04-29T04:00:00Z India will spend $320 million to construct the vacuum chamber and buildings to house the device. News at a glance: A new malaria vaccine, a Parkinson’s test, and editors resign 2023-04-19T04:00:00Z The vacuum chamber has multiple, sequential compartments with different jobs. Physicists Make Matter out of Light to Find Quantum Singularities 2023-06-18T04:00:00Z What’s “truly astonishing,” Zago says, is a precision vacuum chamber that INO engineers and an Iranian company fashioned to coat the blanks with aluminum, transforming the polished glass into telescope mirrors. ‘The door is open’: Iranian astronomers seek collaborations for their new, world-class telescope 2022-10-19T04:00:00Z Rather than restart the detector, researchers will open its vacuum chamber to remove the loose magnet from one mirror and replace the other mirror. Damage delays restart of Italy's giant gravitational wave detector 2023-05-16T04:00:00Z The vacuum chamber is at the test site, but its two outer envelopes are still in production. How Much Does ‘Nothing’ Weigh? 2023-04-29T04:00:00Z The mirrors are made by rotating liquid in a vacuum chamber as a parabolic “mold,” onto which chemical vapors are deposited to form a polymer layer. News at a glance: A new malaria vaccine, a Parkinson’s test, and editors resign 2023-04-19T04:00:00Z Yet another example is the expansion of a puff of gas introduced into one corner of a vacuum chamber. College Physics for AP Courses 2015-08-12T00:00:00Z For theoretical purposes, however, we could imagine a spring-mass system contained in a vacuum chamber. Calculus, Volume 3 2016-03-30T00:00:00Z The device combines two existing instruments in a vacuum chamber — an “orbitrap,” which harnesses positively charged ions in a small orbit around a negatively charged cathode, and a “magnetron,” which generates a stream of electrons. 2 Seattle startups racing to transform next-gen space travel 2022-06-26T04:00:00Z At its heart is a vacuum chamber about a foot in diameter, containing whichever atom or ion is under scrutiny. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z The neutrino is lost, but the electron is channelled into a 23-metre-long, steel vacuum chamber shaped like a Zeppelin airship, where its energy is measured precisely. How Light Is a Neutrino? The Answer Is Closer Than Ever 2022-02-21T05:00:00Z One possibility for such a futuristic energy source is to store antimatter charged particles in a vacuum chamber, circulating in a magnetic field, and then extract them as needed. College Physics for AP Courses 2015-08-12T00:00:00Z It uses neutral atoms which are put in a vacuum chamber and controlled with lasers. A new quantum computer startup from Harvard, MIT raises $17M 2021-11-17T05:00:00Z Here archives workers push a cart of Veterans Administration records into a vacuum chamber for fumigation in June 1936. Post-Watergate laws and executive orders may not let Trump keep his papers away from investigators 2021-10-26T04:00:00Z One approach to achieving that is to turn the hydrogen into an electrically charged gas, or plasma, which is then controlled in a donut-shaped vacuum chamber. Magnet milestones move distant nuclear fusion dream closer 2021-09-08T04:00:00Z In SPARC, researcher will use 18 coils like the 20 Tesla prototype to surround a toroidal vacuum chamber. This powerful electromagnet could help make fusion energy a reality 2021-09-08T04:00:00Z In 2019, well before the device rocketed to Mars inside Perseverance, it was put through tests inside a cylindrical vacuum chamber at the Jet Propulsion Laboratory in Pasadena, Calif. NASA again postpones historic Ingenuity helicopter flight on Mars 2021-04-13T04:00:00Z While there are various technologies for creating so-called quantum bits or qubits where the computations happen, QuEra’s qubits use neutral atoms in a vacuum chamber and use lasers to cool and control them. A new quantum computer startup from Harvard, MIT raises $17M 2021-11-17T05:00:00Z To tamp down other vibrations, the interferometer must be housed in a vacuum chamber and the weighty mirrors hung from sophisticated suspension systems. Giant gravitational wave detectors could hear murmurs from across universe 2021-03-10T05:00:00Z Low-e coatings can be a “hard coat,” meaning they were sprayed onto the molten glass as it was formed into sheets, or a “soft coat,” applied later in a vacuum chamber. What to do about cloudy, scratched double-pane windows 2021-02-04T05:00:00Z Among those needs are materials that can face up to heat and the neutron bombardment from the plasma, and better schemes for venting the hot helium exhaust from the vacuum chamber. This powerful electromagnet could help make fusion energy a reality 2021-09-08T04:00:00Z The hydrogen fuel is obtained from seawater and just a few grammes is needed but huge magnets are needed to contain the plasma in doughnut-shaped vacuum chamber known as a tokamak. World’s largest nuclear fusion project under assembly in France 2020-07-28T04:00:00Z The most important flight test on Mars will be the first, which will replicate ones previously conducted inside a 25-foot diameter vacuum chamber at JPL. NASA's Ingenuity--the First Ever Off-World Helicopter--Is Set for a 'Wright Brothers Moment' on Mars 2020-07-27T04:00:00Z In a synchrotron, magnets called dipoles sandwich the tubular vacuum chamber through which the electrons travel, supplying the vertical field that bends the particles’ trajectory around the ring. Rebirth of leading European facility promises revolutionary advances in x-ray science 2020-07-15T04:00:00Z Forty-kilogram mirrors made of highly pure silica sit at both ends of each vacuum chamber. Tiny Gravitational-Wave Detector Could Search Anywhere in the Sky 2020-06-30T04:00:00Z To do that, a tokamak relies on intense magnetic fields to trap and squeeze a super-hot ionized gas, or plasma, within a doughnut-shaped vacuum chamber. This powerful electromagnet could help make fusion energy a reality 2021-09-08T04:00:00Z Next, Mr. Kamkar pressurized the chocolate in a vacuum chamber to prevent air bubbles from forming, though he says this step might not be necessary. Why Is This Chocolate Shimmering Like a Rainbow? 2020-05-21T04:00:00Z JPL is equipped with various test facilities, such as a giant vacuum chamber used to subject spacecraft to extreme environments. How a team of NASA engineers developed a ventilator for COVID-19 patients in just a month 2020-04-29T04:00:00Z Within the orb—the reactor’s partially disassembled vacuum chamber—copper plates and graphite tiles line the silvery walls. After decades of decline, the U.S. national fusion lab seeks a rebirth 2020-02-06T05:00:00Z Over the next two months at NASA’s Plum Brook Station, Orion will be subjected to extreme temperatures in the largest vacuum chamber in the world. NASA’s giant "Super Guppy" plane just delivered the agency’s spacecraft to Ohio 2019-11-26T05:00:00Z The most widely known approach to making fusion happen involves a doughnut shaped vacuum chamber called a Tokomak. Nuclear fusion: 'A question of when, not if' 2019-11-06T05:00:00Z Segev et al.1 report experiments in which oxygen molecules in the form of a high-velocity beam travel through a structure known as a decelerator tube and then through a vacuum chamber. A versatile cold-molecule collider 2019-08-06T04:00:00Z Then, two men working with the lunar rocks with their gloved hands inside a small vacuum chamber became contaminated when the gloves cracked open. AP’s Apollo 11 anniversary book chronicles journey to moon 2019-07-17T04:00:00Z NASA’s Mars 2020 spacecraft is prepared before being tested in a vacuum chamber at the agency’s Jet Propulsion Laboratory in Pasadena, California, which simulates the conditions of interplanetary space. Seals, sunsets and giant snakes — May’s best science images 2019-06-06T04:00:00Z Birkeland planned to demonstrate his theory with the aid of a specially constructed device: a brass-plated magnetic sphere, called a terrella, suspended inside a vacuum chamber with glass sides and an electrode on one end. Chasing the Aurora Borealis 2019-04-22T04:00:00Z The better option is to grow them by depositing atoms from vapours in a vacuum chamber. How 2D semiconductors could extend Moore’s law 2019-03-11T04:00:00Z The structure was due to be installed in the vacuum chamber, isolated from any seismic disruption. Japan’s pioneering detector set to join hunt for gravitational waves 2019-01-01T05:00:00Z Three other, more sensitive sensors are nestled inside a round vacuum chamber. Touchdown! Mars InSight lander reaches red planet 2018-11-25T05:00:00Z While experiments are run, the entire balance is placed inside a vacuum chamber. A massive change: Nations will vote to redefine the kilogram 2018-11-15T05:00:00Z Another approach uses the oscillating charges of trapped ions—held in place in a vacuum chamber by laser beams—to function as qubits. How Close Are We--Really--to Building a Quantum Computer? 2018-05-30T04:00:00Z It uses a vacuum chamber that is filled with hydrogen and methane to provide the source of carbon. How to Make a Synthetic Diamond 2018-05-29T04:00:00Z Google and IBM, for example, are pursuing quantum computers based on wires supercooled to become semiconductors or ionized atoms in a vacuum chamber trapped by lasers. What Are the Limits of Manipulating Nature? 2018-05-25T04:00:00Z The technology is simpler than initially intended, after a more-complex version of the lab developed a leak that affected the vacuum chamber and threatened to delay the project. Universe’s coolest lab set to open up quantum world 2018-05-07T04:00:00Z A leak in that vacuum chamber delayed the spacecraft’s original launch date by 26 months. Are Marsquakes Anything Like Earthquakes? NASA Is About to Find Out. 2018-05-04T04:00:00Z Engineers recently added the engine and the fuel tanks to the body of the spacecraft, and they also tested out the lander’s cameras in a vacuum chamber. No one won the Google Lunar X Prize, but these competitors are still shooting for the Moon 2018-03-31T04:00:00Z A US weather satellite undergoes testing in a thermal vacuum chamber before launch.Credit: Latest US weather satellite highlights forecasting challenges 2018-03-01T05:00:00Z Recently, the telescope and instruments completed a 100-day test in a giant vacuum chamber at Johnson Space Center in Houston, Texas. Flagship U.S. space telescope facing further delays 2018-03-01T05:00:00Z One way to break the vacuum would be to simply focus a single laser beam onto an empty spot inside a vacuum chamber. Physicists are planning to build lasers so powerful they could rip apart empty space 2018-01-24T05:00:00Z Correction: An earlier version of this story incorrectly stated that the probe's solar panels will be tested in the thermal vacuum chamber. This NASA spacecraft will get closer to the sun than anything ever before 2018-01-22T05:00:00Z On 17 January, the probe entered a thermal vacuum chamber at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Science in limbo as US government shuts down 2018-01-19T05:00:00Z The vacuum chamber of the Karlsruhe Tritium Neutrino device, designed to measure the mass of the elusive neutrino, clears the small town of Leopoldshafen, Germany, with only 5 centimeters to spare. Our favorite Science photos of 2017 2017-12-28T05:00:00Z On Earth, gravity pulls at the atoms the moment they are released, typically giving physicists just 10 to 20 milliseconds to make their measurements before the BEC crashes to the bottom of the vacuum chamber. Coolest science ever headed to the space station 2017-09-07T04:00:00Z In June, Made in Space successfully completed the first test of its manufacturing equipment in a vacuum chamber that simulates the microgravity environment of space — a major milestone, Rush said. The next manufacturing boom could come from space 2017-08-21T04:00:00Z It will include a thermal vacuum chamber, meant to simulate the harsh environment of space, that will be used to test fully assembled satellites before they are attached to rockets. Lockheed Martin to spend $350 million to build satellite factory of the future 2017-08-01T04:00:00Z The silvery vacuum chamber resembles a zeppelin, the vaguely Art Deco lines of the welds between its stainless steel panels looking at once futuristic and old-fashioned. Weighing the universe's most elusive particle 2017-06-29T04:00:00Z The successor to Hubble, due for launch in 2018, is going to be put inside the giant thermal vacuum chamber where they tested the Apollo spaceships. James Webb telescope: Hubble successor set for yet more tests - BBC News 2017-03-30T04:00:00Z Its heart is a vacuum chamber about the size of a stick of butter. Coolest science ever headed to the space station 2017-09-07T04:00:00Z From France, it goes to Liège in Belgium for another round of testing, this time inside a thermal vacuum chamber. Aeolus wind mission heads for test and launch - BBC News 2017-01-17T05:00:00Z But the team broke this record with the addition of several features, including a vacuum chamber around the emitter. Applied physics: Device breaks cooling record : Nature : Nature Research 2016-12-20T05:00:00Z The idea is to use intense magnetic fields to trap an ultrahot plasma of deuterium and tritium nuclei in a huge donut-shaped vacuum chamber. U.S. should stick with troubled ITER fusion project, secretary of energy recommends 2016-05-26T04:00:00Z The length of the particles' orbit is fixed and controlled by the collider's operators such as to position the beam in the centre of the ring's vacuum chamber. Large Hadron Collider can be 'world's biggest rain meter' - BBC News 2016-04-20T04:00:00Z Sierra Nevada’s plant, for example, features a thermal vacuum chamber that simulates the cold void of space and a pint-size mission control to track its commercial satellite launches. The Cities on the Sunny Side of the American Economy 2016-03-31T04:00:00Z But the instrument must be sealed inside a vacuum chamber in order to be sensitive enough to work, and on December 3rd the agency discovered leaks in the chamber. NASA officially delays its next mission to Mars until 2018 2016-03-09T05:00:00Z They will not immediately lift the lid on Goddard's vacuum chamber; they will bring it up slowly to ambient temperature, a process that will take until the second week of February. James Webb: Hubble successor maintains course - BBC News 2016-01-25T05:00:00Z Head of research and development Catherine Tsouvaltsidis is testing the LiDAR equipment at Thoth's thermal vacuum chamber on the York University campus in downtown Toronto. 20 kilometer high space elevator tower planned 2015-09-03T04:00:00Z This consists of an ultra-high vacuum chamber containing individual atoms and simulates the low-density conditions of empty space so that screening is reduced. Two Steps Closer to the Search for Dark Matter and Dark Energy 2015-08-21T04:00:00Z To search for a chameleon field, they studied the interactions between an aluminum sphere 9.5 millimeters in diameter and a puff of 10 million ultra-cold cesium atoms within a vacuum chamber. Tiny fountain of atoms sparks big insights into dark energy 2015-08-20T04:00:00Z It has a giant vacuum chamber that was built originally to run the rule over the Apollo spaceships before they launched. Big year ahead for James Webb telescope - BBC News 2015-07-31T04:00:00Z Take "Past Life," which moves from a corroded spoken word section to a vacuum chamber choral section to dreamy, dewy R&B and back through in under 4 minutes. Review: Tame Impala's Currents is a journey to the center of a single mind 2015-07-14T04:00:00Z “We got a smart phone, stuck it in a vacuum chamber, and it still worked.” Feature: How tiny satellites spawned in Silicon Valley will monitor a changing Earth 2015-04-09T04:00:00Z Lenard discovered how to enable cathode rays to escape from the vacuum chamber in which they were created, so that they could be examined more closely. How 2 Pro-Nazi Nobelists Attacked Einstein’s "Jewish Science" 2015-02-13T05:00:00Z For the gas in the vacuum chamber to become plasma, the temperatures inside the reactor need to reach 150 million degrees celsius—or ten times the temperature of the centre of the Sun. 'Skunk power' fires fusion confusion 2014-11-16T05:00:00Z The entire process takes place in a vacuum chamber. Secretive Company Claims Battery Breakthrough 2014-08-20T04:00:00Z The technology, straight out of a Star Trek set, shuttles tomatoes on a conveyer belt through an electric infrared heater to soften the peels, then into a vacuum chamber to suck the peels up. July 4 Barbecues Welcome Infrared Tomatoes and Meatless Meat 2014-07-04T04:00:00Z Zarchin’s trick was to replicate the Siberian freeze using a vacuum chamber: When pressure drops below 4 millibars, chilled saltwater becomes ice and thus loses its salt. How Israeli Snowmakers Are Saving Alpine Skiing 2014-01-23T20:09:35Z Although astronomers dub these densities “clouds,” they are unlike anything in our own atmosphere, because they contain fewer atoms in a one square centimeter in these clouds than in any vacuum chamber on earth. Looking In The Sun's Rear-View Mirror: A New Map Of The Local Interstellar Medium 2013-07-29T03:42:00Z One was that the vacuum chamber enclosing the maser sprang leaks. James Gordon Dies at 85; Work Paved Way for Laser 2013-07-28T01:51:30Z An electron beam enters the vacuum chamber and melts the particles in a pattern as dictated by a CAD file. Getting 3-D Printing and Next-Generation Manufacturing to the Factory Floor [Video] 2013-04-22T11:15:00.353Z On a spring afternoon at the Princeton lab, a graduate student toiled away at a glovebox, a vacuum chamber that prevents the iron from rusting. Modern-Day Alchemy Has Iron Working Like Platinum 2012-10-15T20:02:01Z Because the ions reside in a vacuum chamber, they are isolated from the environment, yet the electric repulsion among them provides a strong interaction for producing entanglement. Quantum Computing with Ions [Repost] 2012-10-09T18:15:00.540Z This is so fixed that the pressure of the air influences the upper surface of a vacuum chamber, balanced perfectly between this pressure and a main spring. Reading the Weather 2012-04-19T02:00:27.487Z An accidental experiment on a human occurred in 1965 at what is now Johnson Space Center when a spacesuit leaked in a vacuum chamber. Q & A: What Would It Be Like if You Died by Going Out Into Space? 2011-10-31T20:31:26Z He exposed eggs for various periods to the action of other gases besides air, and also placed them in the vacuum chamber of an air-pump. Makers of Modern Medicine 2011-03-05T03:00:29.580Z On the display counter, from left to right, are the vacuum chamber, telescope and flash apparatus for the Mendenhall 1/4-second apparatus. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z The project started out with a Ph.D candidate, Riccardo Signorelli, using tweezers to put tiny squares of aluminum into a vacuum chamber and then pumping in a hydrocarbon gas. Beyond Fossil Fuels: Gasoline Substitutes Researched With U.S. Funds 2010-08-18T18:26:00Z When the warm moist light air of a cyclone invades a locality the pressure is partially removed, the vacuum chamber is not pressed so hard and the dial hand or the mercury subsides. Reading the Weather 2012-04-19T02:00:27.487Z Even though he was sure the design was sound, he built two prototypes of the TransHab module and demonstrated their resilience in a swimming pool and a vacuum chamber. Entrepreneurs Enter the Commercial Space Race 2010-06-07T22:19:00Z After coating candied prunes in the goop, they finish the job inside a vacuum chamber, where the CO2 gas expands, generating a foamy texture around the fruit. Volcanic ash and cotton candy share molecular characteristics with glass 2010-05-11T04:00:00Z Used with a vacuum chamber not shown here, the apparatus is only about 2 feet high. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z A later device for enhancing the stability is the vacuum chamber, a central depression in the upper surface of the plate, which, when exhausted of air by the wearer, materially increases the adhesion. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" Under the van is an auxiliary vacuum chamber, from which the air is exhausted by the train pipe. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use Well, Number One had its vacuum chamber corroded out a week after we started using dredging. The Native Soil If Tom was not safe inside the vacuum chamber, he felt there wasn't much use in being a cadet any longer. Treachery in Outer Space Shown on the left is the flash apparatus and, on the right, the vacuum chamber within which the pendulum is swung. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z It may also be kept in place by atmospheric adhesion, in which case the palatal vault is included, and the vacuum chamber is utilized in the palatal portion to increase the adhesion. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" Let us imagine that a train has been standing in a siding, and that air has gradually filled the vacuum chamber by leakage. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use As shown here, the interferometer, resting on a wooden beam, is introduced into the path of a light beam reflected from a mirror on the vacuum chamber. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z The second telescope attached to the bottom of the vacuum chamber is for observing the amplitude of the pendulum swing. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z In Geneva, he had secured the construction of a vacuum chamber in which the pendulum could be swung on a support which he called the Geneva support. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z The vacuum chamber of an aneroid barometer extended and compressed. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use |
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