Definition of atomic in English:

atomic

adjective əˈtɒmɪkəˈtɑmɪk

1Relating to an atom or atoms.
原子的
the nature of matter at the atomic level
the atomic nucleus
原子核。
Example sentencesExamples
- Because of its weak interaction with atomic nuclei, the neutrino travels freely through any material object and is very difficult to observe.
- Early studies of radioactivity revealed that certain atomic nuclei were naturally radioactive.
- Later, Rutherford also discovered the atomic nucleus and the proton.
- Its output of particles (electrons, protons, ions and atomic nuclei) is approximately one million tonnes per second.
- The region occupied by some atomic orbitals is spherical with the nucleus of the atom at the center of the sphere.
- The latter half of the twentieth century has opened to scientists an entirely new world: the world of atomic and subatomic particles.
- Whilst we are a long way away from turning lead into gold, science at the atomic level, or nanotechnology, is with us already.
- Studies of complex biological molecules at the atomic level will play a crucial role in this process.
- In conventional superconductors, atomic vibrations induce the electron pairing.
- This device was originally used to map surfaces at the atomic level by using a single atom held at the tip of a probe.
- The study of molecular and atomic structure is called quantum chemistry, or quantum mechanics.
- The breakthrough may help to address concerns about the safety of nanotechnology - the engineering and use of materials at an atomic or molecular scale.
- All substances occur in atomic form, each atom being eternal and indestructible.
- Nanotechnology is the study and manipulation of materials on atomic and molecular scales measured in billionths of a meter.
- Dispersed material may range in size from particles of atomic and molecular dimensions to particles whose size is measured in millimeters.
- One strategy for studying phase transitions is to sweep aside all the intricacy of atomic or molecular structure and build the simplest model that exhibits the behavior of interest.
- The electromagnetic force holds electrons in orbit around atomic nuclei and is thus responsible for holding together all material with which we are familiar.
- An atomic orbital is the region around the nucleus of an atom where an electron of a particular energy is most likely to be found.
- ‘To me a table is a bowl of Jello,’ he says, a reference to the constant jitters that occur on the atomic level.
- Particles from the atomic realm such as photons, electrons or atoms are fired at the first plate, which has two vertical slits in it.
1. 1.1Chemistry (of a substance) consisting of uncombined atoms rather than molecules.
  〔化〕（物质）由原子（而不是分子）组成的
  atomic hydrogen
  原子态的氢。
  Example sentencesExamples
  At that temperature, the gas has enough energy to excite molecular hydrogen but not atomic hydrogen.
  It consists of atomic and molecular hydrogen, with 10 per cent of helium.
  The team has used gases such as ethanol to prevent oxidation and atomic oxygen or hydrogen to remove contamination and provide in-situ cleaning.
  When she observed the galaxy later using the radio telescope, she found that it is embedded in a huge disk of atomic hydrogen gas.
  Using a molecular beam epitaxy chamber, scientists spray-paint a surface with atoms under high temperatures, creating an atomic coating.
  Scientists have broken water down to its atomic material.
2. 1.2 Of or forming a single irreducible unit or component in a larger system.
  （体系中）不可再分的；最小单位的
  a society made up of atomic individuals pursuing private interests
  一个以各自追求私利的个人为基本单位组成的社会。
  Example sentencesExamples
  It was a dream in which man cast off his atomic individuality, as the lycanthrope surrendered to the multiplicity of the wolf pack.
  This is expressed by saying that compound propositions are truth-functions of their component atomic propositions.
  From a philosophical point of view, one has to ask whether modeling growth using atomic units (modules or cells) makes sense at all.
  Iin this case it uses the atomic unit of digital life - a single screen of data on a Palm, a little brick of reality we spend so much time staring at all day long.
  Jeff is no stranger to the issues involved, but even knowing the requirements, it is still difficult to split patches into atomic pieces that each either fix or implement a single thing.
  The human community, as he conceives it, is neither a mere juxtaposition of atomic individuals nor a superorganism living its own life apart from the individual members.
  Naturally showing all of these components in full atomic detail does not get us anywhere, since there are way too many atoms.
  For low-resolution data, it is not necessary to consider the whole set of individual atomic positions.
  The whole issue is compromised by millennia of animal-human interaction that make it difficult to achieve moral clarity even in the atomic system of one owner and one pet.
  Computational docking and fitting techniques have been developed to assemble the atomic structures of their components.
  The triangle is a kind of atomic unit in geometry.
  We have this kind of litigious society where the state is constantly trying to mediate between the rights of all of these atomic individuals.
3. 1.3 Relating to or using the energy released in nuclear fission or fusion.
  （核聚变或裂变释放的）原子能的；与原子能有关的；利用原子能的
  the atomic age required a new way of political thinking
  原子能时代要求一种新的政治思维方式。
  atomic weapons
  核武器。
  Example sentencesExamples
  The atomic fallout is still falling, a silent, ominous dust that isn't remarked upon, only suggested.
  This is like depending on super weapons to defend us in an atomic age.
  According to sources in the security services, upon his release the former atomic reactor technician is to be prevented from travelling abroad.
  It is precisely those features which are undesirable in a nuclear reactor that are vital in an atomic weapon.
  That the cooperation with the Kremlin had limits was shown in the Manhattan Project, the secret Anglo-American effort to acquire an atomic weapon before the Germans.
  Cheney said recent information gleaned from a top former Pakistani nuclear scientist provided compelling evidence that Pyongyang has an active atomic weapons program.
  This was the first film to suggest that mankind will have to conquer its destructive nature and control its atomic weapons if it ever wants to join the rest of the peace-loving Universe.
  The threat of nuclear proliferation will abate as dangerous stockpiles of atomic weapons are quickly used up.
  Leahy's position on atomic weapons was affected by the fact that he simply did not believe that the bomb would work.
  Has your recipe for nuclear fuel changed much since the birth of the atomic age?
  The centrality of atomic fission and fusion is giving way to the collection, processing, fusion, and dissemination of information.
  Dr Barnaby worked in a British atomic weapons laboratory in the 1950s, and later headed up the Stockholm International Peace Research Institute.
  Mining of uranium ores has been a controversial issue because of its use in atomic weapons and the potential for accidents at nuclear power stations.
  We can scoff now at the innocence of the early atomic age when we were all advised that in a nuclear attack it was safe to hide under the kitchen table.
  Israel has always maintained a policy of nuclear ambiguity, refusing to confirm or deny it has atomic weapons.
  Robert Oppenheimer, one of the scientists who created the American atomic bomb, characterized the atomic age as like two scorpions trapped in a glass jar.
  Following the initial use of an atomic weapon against his country, the Japanese war minister, General Korechiki Anami, attempted to persuade the Japanese Supreme Council to continue the war.
  The strike against Hiroshima on 6 August 1945 signaled the beginning of the atomic age and a revolution in strategic affairs.
  The atomic fallout would settle along the beaches and cities of the world - including New Zealand and Canada.
  Since Hiroshima and Nagasaki, historians have devoted nearly as much energy to debating who made the decision to use the bomb as was released in the atomic explosions.
  Then, in late 1953, the Atomic Energy Commission succeeded in developing a high-yield, lightweight atomic weapon.
  Nuclear fusion is sort of the Holy Grail of energy production, whereby atomic nuclei slam together at high temperatures, fuse and release a great deal of energy.
  Just as nuclear scientists concerned about lethal radioactivity oppose atomic weapons, should marine scientists campaign for an end to coal-fired power stations?
  The Soviets had exploded their first atomic device in 1949, but they lacked credible delivery systems to threaten the United States directly.
  Radio Bikini reminds us that as long as there are atomic weapons around the world, what happened in that out of the way atoll is just another dumb decision, probably destined to be repeated.
  Shock at this event and fear of the possibility of atomic attack, led to the installation of a new system of cable communication in the USA.

Derivatives

atomically

adverb

The process described herein will enable reduction of surface roughness at the interfaces of multilayered thin films to produce atomically smooth surfaces.
Example sentencesExamples
- It is atomically flat, hydrophilic, and, in water, negatively charged.
- The researchers use a technique called nanoscale electro-machining (nano-EM) to etch nanopores as small as 8-10 nanometers in diameter on an atomically flat gold surface.
- ‘If we use substrate-mediated interactions to direct the arrangement of monomers prior to chemical bonding, we may be able to build atomically precise structures,’ says Weiss.
- We are each so atomically numerous and so vigorously recycled at death that a significant number of our atoms - up to a billion for each of us, it has been suggested - probably once belonged to Shakespeare.

Origin

Late 17th century: from modern Latin atomicus, from atomus 'indivisible' (see atom).

Rhymes

agronomic, astronomic, comic, economic, ergonomic, gastronomic, metronomic, palindromic, physiognomic, subatomic, taxonomic, tragicomic

Definition of atomic in US English:

atomic

adjectiveəˈtɑmɪkəˈtämik

1Relating to an atom or atoms.
原子的
the atomic nucleus
原子核。
Example sentencesExamples
- Whilst we are a long way away from turning lead into gold, science at the atomic level, or nanotechnology, is with us already.
- Dispersed material may range in size from particles of atomic and molecular dimensions to particles whose size is measured in millimeters.
- The region occupied by some atomic orbitals is spherical with the nucleus of the atom at the center of the sphere.
- Particles from the atomic realm such as photons, electrons or atoms are fired at the first plate, which has two vertical slits in it.
- One strategy for studying phase transitions is to sweep aside all the intricacy of atomic or molecular structure and build the simplest model that exhibits the behavior of interest.
- The breakthrough may help to address concerns about the safety of nanotechnology - the engineering and use of materials at an atomic or molecular scale.
- An atomic orbital is the region around the nucleus of an atom where an electron of a particular energy is most likely to be found.
- Later, Rutherford also discovered the atomic nucleus and the proton.
- Studies of complex biological molecules at the atomic level will play a crucial role in this process.
- Its output of particles (electrons, protons, ions and atomic nuclei) is approximately one million tonnes per second.
- The study of molecular and atomic structure is called quantum chemistry, or quantum mechanics.
- This device was originally used to map surfaces at the atomic level by using a single atom held at the tip of a probe.
- All substances occur in atomic form, each atom being eternal and indestructible.
- Because of its weak interaction with atomic nuclei, the neutrino travels freely through any material object and is very difficult to observe.
- Early studies of radioactivity revealed that certain atomic nuclei were naturally radioactive.
- In conventional superconductors, atomic vibrations induce the electron pairing.
- Nanotechnology is the study and manipulation of materials on atomic and molecular scales measured in billionths of a meter.
- The latter half of the twentieth century has opened to scientists an entirely new world: the world of atomic and subatomic particles.
- ‘To me a table is a bowl of Jello,’ he says, a reference to the constant jitters that occur on the atomic level.
- The electromagnetic force holds electrons in orbit around atomic nuclei and is thus responsible for holding together all material with which we are familiar.
1. 1.1Chemistry (of a substance) consisting of uncombined atoms rather than molecules.
  〔化〕（物质）由原子（而不是分子）组成的
  atomic hydrogen
  原子态的氢。
  Example sentencesExamples
  At that temperature, the gas has enough energy to excite molecular hydrogen but not atomic hydrogen.
  It consists of atomic and molecular hydrogen, with 10 per cent of helium.
  The team has used gases such as ethanol to prevent oxidation and atomic oxygen or hydrogen to remove contamination and provide in-situ cleaning.
  Using a molecular beam epitaxy chamber, scientists spray-paint a surface with atoms under high temperatures, creating an atomic coating.
  When she observed the galaxy later using the radio telescope, she found that it is embedded in a huge disk of atomic hydrogen gas.
  Scientists have broken water down to its atomic material.
2. 1.2 Of or forming a single irreducible unit or component in a larger system.
  （体系中）不可再分的；最小单位的
  a society made up of atomic individuals pursuing private interests
  一个以各自追求私利的个人为基本单位组成的社会。
  Example sentencesExamples
  The whole issue is compromised by millennia of animal-human interaction that make it difficult to achieve moral clarity even in the atomic system of one owner and one pet.
  Jeff is no stranger to the issues involved, but even knowing the requirements, it is still difficult to split patches into atomic pieces that each either fix or implement a single thing.
  The triangle is a kind of atomic unit in geometry.
  Naturally showing all of these components in full atomic detail does not get us anywhere, since there are way too many atoms.
  We have this kind of litigious society where the state is constantly trying to mediate between the rights of all of these atomic individuals.
  Computational docking and fitting techniques have been developed to assemble the atomic structures of their components.
  From a philosophical point of view, one has to ask whether modeling growth using atomic units (modules or cells) makes sense at all.
  This is expressed by saying that compound propositions are truth-functions of their component atomic propositions.
  For low-resolution data, it is not necessary to consider the whole set of individual atomic positions.
  Iin this case it uses the atomic unit of digital life - a single screen of data on a Palm, a little brick of reality we spend so much time staring at all day long.
  It was a dream in which man cast off his atomic individuality, as the lycanthrope surrendered to the multiplicity of the wolf pack.
  The human community, as he conceives it, is neither a mere juxtaposition of atomic individuals nor a superorganism living its own life apart from the individual members.
3. 1.3 Relating to, denoting, or using the energy released in nuclear fission or fusion.
  （核聚变或裂变释放的）原子能的；与原子能有关的；利用原子能的
  the atomic age required a new way of political thinking
  原子能时代要求一种新的政治思维方式。
  atomic weapons
  核武器。
  Example sentencesExamples
  Israel has always maintained a policy of nuclear ambiguity, refusing to confirm or deny it has atomic weapons.
  This was the first film to suggest that mankind will have to conquer its destructive nature and control its atomic weapons if it ever wants to join the rest of the peace-loving Universe.
  That the cooperation with the Kremlin had limits was shown in the Manhattan Project, the secret Anglo-American effort to acquire an atomic weapon before the Germans.
  The threat of nuclear proliferation will abate as dangerous stockpiles of atomic weapons are quickly used up.
  Radio Bikini reminds us that as long as there are atomic weapons around the world, what happened in that out of the way atoll is just another dumb decision, probably destined to be repeated.
  Has your recipe for nuclear fuel changed much since the birth of the atomic age?
  We can scoff now at the innocence of the early atomic age when we were all advised that in a nuclear attack it was safe to hide under the kitchen table.
  Dr Barnaby worked in a British atomic weapons laboratory in the 1950s, and later headed up the Stockholm International Peace Research Institute.
  Leahy's position on atomic weapons was affected by the fact that he simply did not believe that the bomb would work.
  According to sources in the security services, upon his release the former atomic reactor technician is to be prevented from travelling abroad.
  The strike against Hiroshima on 6 August 1945 signaled the beginning of the atomic age and a revolution in strategic affairs.
  The atomic fallout is still falling, a silent, ominous dust that isn't remarked upon, only suggested.
  Since Hiroshima and Nagasaki, historians have devoted nearly as much energy to debating who made the decision to use the bomb as was released in the atomic explosions.
  Just as nuclear scientists concerned about lethal radioactivity oppose atomic weapons, should marine scientists campaign for an end to coal-fired power stations?
  Following the initial use of an atomic weapon against his country, the Japanese war minister, General Korechiki Anami, attempted to persuade the Japanese Supreme Council to continue the war.
  Cheney said recent information gleaned from a top former Pakistani nuclear scientist provided compelling evidence that Pyongyang has an active atomic weapons program.
  Nuclear fusion is sort of the Holy Grail of energy production, whereby atomic nuclei slam together at high temperatures, fuse and release a great deal of energy.
  The Soviets had exploded their first atomic device in 1949, but they lacked credible delivery systems to threaten the United States directly.
  Shock at this event and fear of the possibility of atomic attack, led to the installation of a new system of cable communication in the USA.
  The atomic fallout would settle along the beaches and cities of the world - including New Zealand and Canada.
  The centrality of atomic fission and fusion is giving way to the collection, processing, fusion, and dissemination of information.
  Then, in late 1953, the Atomic Energy Commission succeeded in developing a high-yield, lightweight atomic weapon.
  Robert Oppenheimer, one of the scientists who created the American atomic bomb, characterized the atomic age as like two scorpions trapped in a glass jar.
  It is precisely those features which are undesirable in a nuclear reactor that are vital in an atomic weapon.
  Mining of uranium ores has been a controversial issue because of its use in atomic weapons and the potential for accidents at nuclear power stations.
  This is like depending on super weapons to defend us in an atomic age.

Origin

Late 17th century: from modern Latin atomicus, from atomus ‘indivisible’ (see atom).

词汇	atomic
释义	Definition of atomic in English: atomic adjective əˈtɒmɪkəˈtɑmɪk 1Relating to an atom or atoms. 原子的 the nature of matter at the atomic level the atomic nucleus 原子核。 Example sentencesExamples Because of its weak interaction with atomic nuclei, the neutrino travels freely through any material object and is very difficult to observe. Early studies of radioactivity revealed that certain atomic nuclei were naturally radioactive. Later, Rutherford also discovered the atomic nucleus and the proton. Its output of particles (electrons, protons, ions and atomic nuclei) is approximately one million tonnes per second. The region occupied by some atomic orbitals is spherical with the nucleus of the atom at the center of the sphere. The latter half of the twentieth century has opened to scientists an entirely new world: the world of atomic and subatomic particles. Whilst we are a long way away from turning lead into gold, science at the atomic level, or nanotechnology, is with us already. Studies of complex biological molecules at the atomic level will play a crucial role in this process. In conventional superconductors, atomic vibrations induce the electron pairing. This device was originally used to map surfaces at the atomic level by using a single atom held at the tip of a probe. The study of molecular and atomic structure is called quantum chemistry, or quantum mechanics. The breakthrough may help to address concerns about the safety of nanotechnology - the engineering and use of materials at an atomic or molecular scale. All substances occur in atomic form, each atom being eternal and indestructible. Nanotechnology is the study and manipulation of materials on atomic and molecular scales measured in billionths of a meter. Dispersed material may range in size from particles of atomic and molecular dimensions to particles whose size is measured in millimeters. One strategy for studying phase transitions is to sweep aside all the intricacy of atomic or molecular structure and build the simplest model that exhibits the behavior of interest. The electromagnetic force holds electrons in orbit around atomic nuclei and is thus responsible for holding together all material with which we are familiar. An atomic orbital is the region around the nucleus of an atom where an electron of a particular energy is most likely to be found. ‘To me a table is a bowl of Jello,’ he says, a reference to the constant jitters that occur on the atomic level. Particles from the atomic realm such as photons, electrons or atoms are fired at the first plate, which has two vertical slits in it. 1.1Chemistry (of a substance) consisting of uncombined atoms rather than molecules. 〔化〕（物质）由原子（而不是分子）组成的 atomic hydrogen 原子态的氢。 Example sentencesExamples At that temperature, the gas has enough energy to excite molecular hydrogen but not atomic hydrogen. It consists of atomic and molecular hydrogen, with 10 per cent of helium. The team has used gases such as ethanol to prevent oxidation and atomic oxygen or hydrogen to remove contamination and provide in-situ cleaning. When she observed the galaxy later using the radio telescope, she found that it is embedded in a huge disk of atomic hydrogen gas. Using a molecular beam epitaxy chamber, scientists spray-paint a surface with atoms under high temperatures, creating an atomic coating. Scientists have broken water down to its atomic material. 1.2 Of or forming a single irreducible unit or component in a larger system. （体系中）不可再分的；最小单位的 a society made up of atomic individuals pursuing private interests 一个以各自追求私利的个人为基本单位组成的社会。 Example sentencesExamples It was a dream in which man cast off his atomic individuality, as the lycanthrope surrendered to the multiplicity of the wolf pack. This is expressed by saying that compound propositions are truth-functions of their component atomic propositions. From a philosophical point of view, one has to ask whether modeling growth using atomic units (modules or cells) makes sense at all. Iin this case it uses the atomic unit of digital life - a single screen of data on a Palm, a little brick of reality we spend so much time staring at all day long. Jeff is no stranger to the issues involved, but even knowing the requirements, it is still difficult to split patches into atomic pieces that each either fix or implement a single thing. The human community, as he conceives it, is neither a mere juxtaposition of atomic individuals nor a superorganism living its own life apart from the individual members. Naturally showing all of these components in full atomic detail does not get us anywhere, since there are way too many atoms. For low-resolution data, it is not necessary to consider the whole set of individual atomic positions. The whole issue is compromised by millennia of animal-human interaction that make it difficult to achieve moral clarity even in the atomic system of one owner and one pet. Computational docking and fitting techniques have been developed to assemble the atomic structures of their components. The triangle is a kind of atomic unit in geometry. We have this kind of litigious society where the state is constantly trying to mediate between the rights of all of these atomic individuals. 1.3 Relating to or using the energy released in nuclear fission or fusion. （核聚变或裂变释放的）原子能的；与原子能有关的；利用原子能的 the atomic age required a new way of political thinking 原子能时代要求一种新的政治思维方式。 atomic weapons 核武器。 Example sentencesExamples The atomic fallout is still falling, a silent, ominous dust that isn't remarked upon, only suggested. This is like depending on super weapons to defend us in an atomic age. According to sources in the security services, upon his release the former atomic reactor technician is to be prevented from travelling abroad. It is precisely those features which are undesirable in a nuclear reactor that are vital in an atomic weapon. That the cooperation with the Kremlin had limits was shown in the Manhattan Project, the secret Anglo-American effort to acquire an atomic weapon before the Germans. Cheney said recent information gleaned from a top former Pakistani nuclear scientist provided compelling evidence that Pyongyang has an active atomic weapons program. This was the first film to suggest that mankind will have to conquer its destructive nature and control its atomic weapons if it ever wants to join the rest of the peace-loving Universe. The threat of nuclear proliferation will abate as dangerous stockpiles of atomic weapons are quickly used up. Leahy's position on atomic weapons was affected by the fact that he simply did not believe that the bomb would work. Has your recipe for nuclear fuel changed much since the birth of the atomic age? The centrality of atomic fission and fusion is giving way to the collection, processing, fusion, and dissemination of information. Dr Barnaby worked in a British atomic weapons laboratory in the 1950s, and later headed up the Stockholm International Peace Research Institute. Mining of uranium ores has been a controversial issue because of its use in atomic weapons and the potential for accidents at nuclear power stations. We can scoff now at the innocence of the early atomic age when we were all advised that in a nuclear attack it was safe to hide under the kitchen table. Israel has always maintained a policy of nuclear ambiguity, refusing to confirm or deny it has atomic weapons. Robert Oppenheimer, one of the scientists who created the American atomic bomb, characterized the atomic age as like two scorpions trapped in a glass jar. Following the initial use of an atomic weapon against his country, the Japanese war minister, General Korechiki Anami, attempted to persuade the Japanese Supreme Council to continue the war. The strike against Hiroshima on 6 August 1945 signaled the beginning of the atomic age and a revolution in strategic affairs. The atomic fallout would settle along the beaches and cities of the world - including New Zealand and Canada. Since Hiroshima and Nagasaki, historians have devoted nearly as much energy to debating who made the decision to use the bomb as was released in the atomic explosions. Then, in late 1953, the Atomic Energy Commission succeeded in developing a high-yield, lightweight atomic weapon. Nuclear fusion is sort of the Holy Grail of energy production, whereby atomic nuclei slam together at high temperatures, fuse and release a great deal of energy. Just as nuclear scientists concerned about lethal radioactivity oppose atomic weapons, should marine scientists campaign for an end to coal-fired power stations? The Soviets had exploded their first atomic device in 1949, but they lacked credible delivery systems to threaten the United States directly. Radio Bikini reminds us that as long as there are atomic weapons around the world, what happened in that out of the way atoll is just another dumb decision, probably destined to be repeated. Shock at this event and fear of the possibility of atomic attack, led to the installation of a new system of cable communication in the USA. Derivatives atomically adverb The process described herein will enable reduction of surface roughness at the interfaces of multilayered thin films to produce atomically smooth surfaces. Example sentencesExamples It is atomically flat, hydrophilic, and, in water, negatively charged. The researchers use a technique called nanoscale electro-machining (nano-EM) to etch nanopores as small as 8-10 nanometers in diameter on an atomically flat gold surface. ‘If we use substrate-mediated interactions to direct the arrangement of monomers prior to chemical bonding, we may be able to build atomically precise structures,’ says Weiss. We are each so atomically numerous and so vigorously recycled at death that a significant number of our atoms - up to a billion for each of us, it has been suggested - probably once belonged to Shakespeare. Origin Late 17th century: from modern Latin atomicus, from atomus 'indivisible' (see atom). Rhymes agronomic, astronomic, comic, economic, ergonomic, gastronomic, metronomic, palindromic, physiognomic, subatomic, taxonomic, tragicomic Definition of atomic in US English: atomic adjectiveəˈtɑmɪkəˈtämik 1Relating to an atom or atoms. 原子的 the atomic nucleus 原子核。 Example sentencesExamples Whilst we are a long way away from turning lead into gold, science at the atomic level, or nanotechnology, is with us already. Dispersed material may range in size from particles of atomic and molecular dimensions to particles whose size is measured in millimeters. The region occupied by some atomic orbitals is spherical with the nucleus of the atom at the center of the sphere. Particles from the atomic realm such as photons, electrons or atoms are fired at the first plate, which has two vertical slits in it. One strategy for studying phase transitions is to sweep aside all the intricacy of atomic or molecular structure and build the simplest model that exhibits the behavior of interest. The breakthrough may help to address concerns about the safety of nanotechnology - the engineering and use of materials at an atomic or molecular scale. An atomic orbital is the region around the nucleus of an atom where an electron of a particular energy is most likely to be found. Later, Rutherford also discovered the atomic nucleus and the proton. Studies of complex biological molecules at the atomic level will play a crucial role in this process. Its output of particles (electrons, protons, ions and atomic nuclei) is approximately one million tonnes per second. The study of molecular and atomic structure is called quantum chemistry, or quantum mechanics. This device was originally used to map surfaces at the atomic level by using a single atom held at the tip of a probe. All substances occur in atomic form, each atom being eternal and indestructible. Because of its weak interaction with atomic nuclei, the neutrino travels freely through any material object and is very difficult to observe. Early studies of radioactivity revealed that certain atomic nuclei were naturally radioactive. In conventional superconductors, atomic vibrations induce the electron pairing. Nanotechnology is the study and manipulation of materials on atomic and molecular scales measured in billionths of a meter. The latter half of the twentieth century has opened to scientists an entirely new world: the world of atomic and subatomic particles. ‘To me a table is a bowl of Jello,’ he says, a reference to the constant jitters that occur on the atomic level. The electromagnetic force holds electrons in orbit around atomic nuclei and is thus responsible for holding together all material with which we are familiar. 1.1Chemistry (of a substance) consisting of uncombined atoms rather than molecules. 〔化〕（物质）由原子（而不是分子）组成的 atomic hydrogen 原子态的氢。 Example sentencesExamples At that temperature, the gas has enough energy to excite molecular hydrogen but not atomic hydrogen. It consists of atomic and molecular hydrogen, with 10 per cent of helium. The team has used gases such as ethanol to prevent oxidation and atomic oxygen or hydrogen to remove contamination and provide in-situ cleaning. Using a molecular beam epitaxy chamber, scientists spray-paint a surface with atoms under high temperatures, creating an atomic coating. When she observed the galaxy later using the radio telescope, she found that it is embedded in a huge disk of atomic hydrogen gas. Scientists have broken water down to its atomic material. 1.2 Of or forming a single irreducible unit or component in a larger system. （体系中）不可再分的；最小单位的 a society made up of atomic individuals pursuing private interests 一个以各自追求私利的个人为基本单位组成的社会。 Example sentencesExamples The whole issue is compromised by millennia of animal-human interaction that make it difficult to achieve moral clarity even in the atomic system of one owner and one pet. Jeff is no stranger to the issues involved, but even knowing the requirements, it is still difficult to split patches into atomic pieces that each either fix or implement a single thing. The triangle is a kind of atomic unit in geometry. Naturally showing all of these components in full atomic detail does not get us anywhere, since there are way too many atoms. We have this kind of litigious society where the state is constantly trying to mediate between the rights of all of these atomic individuals. Computational docking and fitting techniques have been developed to assemble the atomic structures of their components. From a philosophical point of view, one has to ask whether modeling growth using atomic units (modules or cells) makes sense at all. This is expressed by saying that compound propositions are truth-functions of their component atomic propositions. For low-resolution data, it is not necessary to consider the whole set of individual atomic positions. Iin this case it uses the atomic unit of digital life - a single screen of data on a Palm, a little brick of reality we spend so much time staring at all day long. It was a dream in which man cast off his atomic individuality, as the lycanthrope surrendered to the multiplicity of the wolf pack. The human community, as he conceives it, is neither a mere juxtaposition of atomic individuals nor a superorganism living its own life apart from the individual members. 1.3 Relating to, denoting, or using the energy released in nuclear fission or fusion. （核聚变或裂变释放的）原子能的；与原子能有关的；利用原子能的 the atomic age required a new way of political thinking 原子能时代要求一种新的政治思维方式。 atomic weapons 核武器。 Example sentencesExamples Israel has always maintained a policy of nuclear ambiguity, refusing to confirm or deny it has atomic weapons. This was the first film to suggest that mankind will have to conquer its destructive nature and control its atomic weapons if it ever wants to join the rest of the peace-loving Universe. That the cooperation with the Kremlin had limits was shown in the Manhattan Project, the secret Anglo-American effort to acquire an atomic weapon before the Germans. The threat of nuclear proliferation will abate as dangerous stockpiles of atomic weapons are quickly used up. Radio Bikini reminds us that as long as there are atomic weapons around the world, what happened in that out of the way atoll is just another dumb decision, probably destined to be repeated. Has your recipe for nuclear fuel changed much since the birth of the atomic age? We can scoff now at the innocence of the early atomic age when we were all advised that in a nuclear attack it was safe to hide under the kitchen table. Dr Barnaby worked in a British atomic weapons laboratory in the 1950s, and later headed up the Stockholm International Peace Research Institute. Leahy's position on atomic weapons was affected by the fact that he simply did not believe that the bomb would work. According to sources in the security services, upon his release the former atomic reactor technician is to be prevented from travelling abroad. The strike against Hiroshima on 6 August 1945 signaled the beginning of the atomic age and a revolution in strategic affairs. The atomic fallout is still falling, a silent, ominous dust that isn't remarked upon, only suggested. Since Hiroshima and Nagasaki, historians have devoted nearly as much energy to debating who made the decision to use the bomb as was released in the atomic explosions. Just as nuclear scientists concerned about lethal radioactivity oppose atomic weapons, should marine scientists campaign for an end to coal-fired power stations? Following the initial use of an atomic weapon against his country, the Japanese war minister, General Korechiki Anami, attempted to persuade the Japanese Supreme Council to continue the war. Cheney said recent information gleaned from a top former Pakistani nuclear scientist provided compelling evidence that Pyongyang has an active atomic weapons program. Nuclear fusion is sort of the Holy Grail of energy production, whereby atomic nuclei slam together at high temperatures, fuse and release a great deal of energy. The Soviets had exploded their first atomic device in 1949, but they lacked credible delivery systems to threaten the United States directly. Shock at this event and fear of the possibility of atomic attack, led to the installation of a new system of cable communication in the USA. The atomic fallout would settle along the beaches and cities of the world - including New Zealand and Canada. The centrality of atomic fission and fusion is giving way to the collection, processing, fusion, and dissemination of information. Then, in late 1953, the Atomic Energy Commission succeeded in developing a high-yield, lightweight atomic weapon. Robert Oppenheimer, one of the scientists who created the American atomic bomb, characterized the atomic age as like two scorpions trapped in a glass jar. It is precisely those features which are undesirable in a nuclear reactor that are vital in an atomic weapon. Mining of uranium ores has been a controversial issue because of its use in atomic weapons and the potential for accidents at nuclear power stations. This is like depending on super weapons to defend us in an atomic age. Origin Late 17th century: from modern Latin atomicus, from atomus ‘indivisible’ (see atom).
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