user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: what subatomic particles did jj thomson discover? 
Knowledge Triplets: Electricity and matter, book.written_work.author, Joseph John Thomson
In 1922, the brilliant success of his work on atomic structure earned him the Nobel Prize for physics., base.kwebbase.kwsentence.kwtopic, Niels Henrik David Bohr
Thomson then developed experiments in which the rays were deflected by both magnetic and electrical fields., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
joseph john thomson worked under john william strutt, base.kwebbase.kwconnection.relation, worked under
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, His work related to that of Becquerel and Lorenz.
joseph john thomson taught paul langevin, base.kwebbase.kwconnection.other, Paul Langevin
Thomson, common.topic.notable_for, g.1258b_sgd
joseph john thomson work related to eugen goldstein, base.kwebbase.kwconnection.subject, Joseph John Thomson
Jj-thomson3, common.image.appears_in_topic_gallery, Joseph John Thomson
m.0n1hw_h, education.education.student, Joseph John Thomson
The Structure of Light, book.written_work.author, Joseph John Thomson
joseph john thomson knew arthur balfour, base.kwebbase.kwconnection.relation, knew
Joseph John Thomson, education.academic.advisees, Edward Victor Appleton
joseph john thomson taught julius robert oppenheimer, base.kwebbase.kwconnection.sentence, He taught Langevin, Bragg and Oppenheimer.
He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions., base.kwebbase.kwsentence.next_sentence, Deflection of the rays in electric and magnetic fields proved they were positive particles.
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, In 1884,  Thomson was chosen to replace Rayleigh as director of the Cavendish.
John William Strutt, base.kwebbase.kwtopic.connections_to, joseph john thomson worked under john william strutt
joseph john thomson work related to antoine-henri becquerel, base.kwebbase.kwconnection.relation, work related to
Ernest Rutherford, education.academic.advisors, Joseph John Thomson
joseph john thomson work related to eugen goldstein, base.kwebbase.kwconnection.relation, work related to
Joseph John Thomson, education.academic.advisees, John Sealy Townsend
joseph john thomson work related to antoine-henri becquerel, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson work related to albert einstein, base.kwebbase.kwconnection.other, Albert Einstein
joseph john thomson work related to eugen goldstein, base.kwebbase.kwconnection.other, Eugen Goldstein
Thomson scattering, symbols.namesake.named_after, Joseph John Thomson
George Paget Thomson, common.topic.notable_for, g.125dx7kkw
joseph john thomson fellow-psychic with arthur conan doyle, base.kwebbase.kwconnection.other, Arthur Conan Doyle
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, In Cambridge, he tried to simulate such cloud effects in the laboratory.
Joseph John Thomson, book.author.works_written, The Structure of Light
joseph john thomson taught paul langevin, base.kwebbase.kwconnection.subject, Joseph John Thomson
John Zeleny, education.academic.advisors, Joseph John Thomson
joseph john thomson fellow-psychic with alfred russel wallace, base.kwebbase.kwconnection.relation, fellow-psychic with
He taught Langevin, Bragg and Oppenheimer., base.kwebbase.kwsentence.contains_connections, joseph john thomson taught william henry bragg
Joseph John Thomson, book.author.works_written, Rays of positive electricity and their application to chemical analyses
m.03lsdr7, education.education.student, Joseph John Thomson
joseph john thomson work related to william crookes, base.kwebbase.kwconnection.relation, work related to
Thomson was awarded the 1906 Nobel Prize in Physics, and in 1908 he was knighted for his scientific achievements., base.kwebbase.kwsentence.dates, m.0c0_45h
Joseph John Thomson, influence.influence_node.influenced, Niels Henrik David Bohr
joseph john thomson taught max born, base.kwebbase.kwconnection.relation, taught
joseph john thomson opposed by wilhelm ostwald, base.kwebbase.kwconnection.relation, opposed by
In 1914, he found that positive rays consist of hydrogen nuclei., base.kwebbase.kwsentence.next_sentence, He and Edward Andrade, by diffracting them with a crystal, showed that gamma rays were electromagnetic waves.
Ernest Rutherford, base.kwebbase.kwtopic.has_sentences, He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions.
Thomson was awarded the 1906 Nobel Prize in Physics, and in 1908 he was knighted for his scientific achievements., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
Joseph John Thomson, education.academic.advisees, Lionel Robert Wilberforce
joseph john thomson work related to james clerk maxwell, base.kwebbase.kwconnection.other, Martha Maxwell
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, The Wilson cloud chamber was the first instrument to detect the tracks of atomic particles.
Joseph John Thomson, people.person.sibling_s, m.0v4xbcq
Notes on Recent Researches in Electricity and Magnetism, book.written_work.author, Joseph John Thomson
Tendencies of recent investigations in the field of physics, book.written_work.author, Joseph John Thomson
joseph john thomson fellow- psychic with oliver joseph lodge, base.kwebbase.kwconnection.other, Oliver Lodge
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, In 1900, Wilson solved this mystery.
Joseph John Thomson, common.topic.article, m.0j698
m.0646h0k, base.nobelprizes.nobel_subject_area.nobel_awards, Electron
Joseph John Thomson, people.person.education, m.02wpwkg
Thomson problem, common.topic.article, m.08rnn7
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to julius plucker
joseph john thomson fellow- psychic with oliver joseph lodge, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joan Paget Thomson, common.topic.notable_for, g.12h2wvysz
Joseph John Thomson, people.person.children, George Paget Thomson
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson fellow-psychic with alfred russel wallace
Thomson, astronomy.extraterrestrial_location.on_celestial_object, Moon
Joseph John Thomson, people.person.profession, Mathematician
joseph john thomson work related to julius plucker, base.kwebbase.kwconnection.other, Julius Plücker
joseph john thomson fellow-psychic with arthur conan doyle, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, He helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897).
joseph john thomson work related to johann wilhelm hittorf, base.kwebbase.kwconnection.relation, work related to
Charles Thomson Rees Wilson, education.academic.advisors, Joseph John Thomson
Joseph John Thomson, book.author.works_written, Conduction of electricity through gases
Max Born, base.kwebbase.kwtopic.has_sentences, In 1907 he went to Cambridge University to study electrons under British physicist J.J. Thomson.
m.0646h0k, base.nobelprizes.nobel_honor.nobel_prize_winner, Joseph John Thomson
Joseph John Thomson, book.author.works_written, The electron in chemistry
He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions., base.kwebbase.kwsentence.previous_sentence, Rutherford now began to investigate the nature of alpha rays.
Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus., base.kwebbase.kwsentence.next_sentence, In 1919, Rutherford succeeded Thomson as director of the Cavendish Laboratory at Cambridge.
In 1884,  Thomson was chosen to replace Rayleigh as director of the Cavendish., base.kwebbase.kwsentence.previous_sentence, This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later.
Joseph John Thomson, education.academic.advisees, William Lawrence Bragg
By 1934, it had been established that the nucleus consisted of two kinds of particles,  protons and neutrons., base.kwebbase.kwsentence.next_sentence, But it was unclear how those particles were arranged within the nucleus, and how the nucleus was shaped.
joseph john thomson fellow-psychic with alfred, lord tennyson, base.kwebbase.kwconnection.sentence, Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle.
joseph john thomson work related to james clerk maxwell, base.kwebbase.kwconnection.subject, Joseph John Thomson
Paul Langevin, base.kwebbase.kwtopic.connections_to, joseph john thomson taught paul langevin
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to antoine-henri becquerel
Frederick Vernon Thomson, people.person.sibling_s, m.0v4xbcq
Joseph John Thomson, book.author.works_written, Notes on Recent Researches in Electricity and Magnetism
He helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897)., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later., base.kwebbase.kwsentence.next_sentence, In 1884,  Thomson was chosen to replace Rayleigh as director of the Cavendish.
Joseph John Thomson, book.author.works_written, Application of Dynamics to Physics and Chemistry
Deflection of the rays in electric and magnetic fields proved they were positive particles., base.kwebbase.kwsentence.previous_sentence, He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions.
joseph john thomson opposed by wilhelm ostwald, base.kwebbase.kwconnection.other, Wilhelm Ostwald
Joseph John Thomson, education.academic.advisees, John Zeleny
Joseph John Thomson, common.topic.image, Jj-thomson2.jpg
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to eugen goldstein
joseph john thomson taught julius robert oppenheimer, base.kwebbase.kwconnection.relation, taught
Joseph John Thomson, education.academic.advisees, Max Born
Joseph John Thomson, education.academic.advisees, Ernest Rutherford
Joseph John Thomson, people.person.education, m.02kq0w4
Jj-thomson3, common.image.appears_in_topic_gallery, Hughes Medal
joseph john thomson taught william henry bragg, base.kwebbase.kwconnection.sentence, He taught Langevin, Bragg and Oppenheimer.
Joseph John Thomson, people.person.profession, Physicist
joseph john thomson taught julius robert oppenheimer, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson taught julius robert oppenheimer, base.kwebbase.kwconnection.other, J. Robert Oppenheimer
Charles Thomson Rees Wilson, common.topic.article, m.02rw7f
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, In 1911, after many attempts, Wilson succeeded in producing a working model of his new cloud chamber.
Joseph John Thomson, book.author.works_written, The discharge of electricity through gases
Thomson scattering, common.topic.image, Thomson scattering geometry
Joseph John Thomson, book.author.works_written, The Corpuscular Theory of Matter
Application of Dynamics to Physics and Chemistry, book.written_work.author, Joseph John Thomson
Thomson, common.topic.image, Mingenii
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson worked under john william strutt
joseph john thomson work related to johann wilhelm hittorf, base.kwebbase.kwconnection.other, Johann Wilhelm Hittorf
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson taught julius robert oppenheimer
joseph john thomson taught william henry bragg, base.kwebbase.kwconnection.relation, taught
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, From 1900 to 1910, Wilson's research was devoted to the study of electrical conduction in dust-free air.
George Paget Thomson, common.topic.article, m.035ztn
Joseph John Thomson, education.academic.advisees, Charles Glover Barkla
This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later., base.kwebbase.kwsentence.contains_connections, joseph john thomson work related to albert einstein
In 1919, Rutherford succeeded Thomson as director of the Cavendish Laboratory at Cambridge., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
joseph john thomson fellow-psychic with arthur conan doyle, base.kwebbase.kwconnection.sentence, Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle.
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to william crookes
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle.
Joseph John Thomson, education.academic.advisees, G. I. Taylor
He taught Langevin, Bragg and Oppenheimer., base.kwebbase.kwsentence.contains_connections, joseph john thomson taught paul langevin
Joseph John Thomson, symbols.name_source.namesakes, Thomson scattering
joseph john thomson work related to william crookes, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joseph John Thomson, common.topic.notable_types, Academic
joseph john thomson superseded by niels henrik david bohr, base.kwebbase.kwconnection.subject, Joseph John Thomson
Properties of Matter, book.written_work.author, Joseph John Thomson
In 1884,  Thomson was chosen to replace Rayleigh as director of the Cavendish., base.kwebbase.kwsentence.dates, m.0c0_41s
John William Strutt, base.kwebbase.kwtopic.has_sentences, He was succeeded by J. J. Thomson as Cavendish professor of experimental physics at Cambridge in 1884.
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, Thomson then developed experiments in which the rays were deflected by both magnetic and electrical fields.
Joseph John Thomson, book.author.works_written, Tendencies of recent investigations in the field of physics
Joseph John Thomson, book.author.works_written, Electricity and matter
Joseph John Thomson, common.topic.image, Jj-thomson3
Hughes Medal, common.topic.image, Jj-thomson3
Joseph James Thomson, common.topic.notable_for, g.12h2z2k31
Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle., base.kwebbase.kwsentence.contains_connections, joseph john thomson fellow- psychic with oliver joseph lodge
Thomson scattering, common.topic.article, m.02xz0m
Joseph John Thomson, book.author.works_written, Properties of Matter
Ernest Rutherford, base.kwebbase.kwtopic.has_sentences, Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus.
The discharge of electricity through gases, book.written_work.author, Joseph John Thomson
Rutherford became the first research student to work under English physicist J.J. Thomson at the Cavendish Laboratory., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
Charles Thomson Rees Wilson, people.person.profession, Physicist
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson knew arthur balfour
At his suggestion, the name \"proton\"  was given to the hydrogen nucleus in 1920., base.kwebbase.kwsentence.next_sentence, Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus.
Joseph John Thomson, education.academic.advisees, Charles Thomson Rees Wilson
He also showed that bombardment with alpha particles had its limits, finding that large nuclei repelled them without disintegrating., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
Joseph James Thomson, common.topic.notable_types, Person
joseph john thomson superseded by niels henrik david bohr, base.kwebbase.kwconnection.relation, superseded by
J, common.image.appears_in_topic_gallery, Joseph John Thomson
An introduction to chemical energetics, book.written_work.author, Joseph John Thomson
A treatise on the motion of vortex rings, book.written_work.author, Joseph John Thomson
joseph john thomson fellow- psychic with oliver joseph lodge, base.kwebbase.kwconnection.sentence, Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle.
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson taught william henry bragg
joseph john thomson fellow-psychic with alfred russel wallace, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson work related to albert einstein, base.kwebbase.kwconnection.relation, work related to
Joseph John Thomson, book.author.works_written, Elements of the mathematical theory of electricity and magnetism
Thomson, common.topic.article, m.03ycsr
J. Robert Oppenheimer, base.kwebbase.kwtopic.connections_to, joseph john thomson taught julius robert oppenheimer
Jj-thomson3, common.image.size, m.04rlctk
joseph john thomson work related to james clerk maxwell, base.kwebbase.kwconnection.relation, work related to
Joseph John Thomson, education.academic.advisees, Francis William Aston
This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
Joseph John Thomson, base.nobelprizes.nobel_prize_winner.nobel_honor, m.0646h0k
Thomson, common.topic.article, m.0ctgpx
Deflection of the rays in electric and magnetic fields proved they were positive particles., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
joseph john thomson work related to antoine-henri becquerel, base.kwebbase.kwconnection.sentence, His work related to that of Becquerel and Lorenz.
He taught Langevin, Bragg and Oppenheimer., base.kwebbase.kwsentence.contains_connections, joseph john thomson taught julius robert oppenheimer
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, Thomson was awarded the 1906 Nobel Prize in Physics, and in 1908 he was knighted for his scientific achievements.
Joseph John Thomson, education.academic.advisors, Edward Routh
joseph john thomson fellow-psychic with alfred, lord tennyson, base.kwebbase.kwconnection.subject, Joseph John Thomson
Thomson was awarded the 1906 Nobel Prize in Physics, and in 1908 he was knighted for his scientific achievements., base.kwebbase.kwsentence.dates, m.0c0_45p
joseph john thomson taught paul langevin, base.kwebbase.kwconnection.relation, taught
joseph john thomson superseded by niels henrik david bohr, base.kwebbase.kwconnection.other, Niels Henrik David Bohr
Joseph John Thomson, book.author.works_written, A treatise on the motion of vortex rings
Elements of the mathematical theory of electricity and magnetism, book.written_work.author, Joseph John Thomson
joseph john thomson work related to johann wilhelm hittorf, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joseph John Thomson, education.academic.advisors, John William Strutt
Thomson, astronomy.extraterrestrial_location.type_of_planetographic_feature, Impact crater
joseph john thomson fellow-psychic with alfred russel wallace, base.kwebbase.kwconnection.other, Alfred Russel Wallace
Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
Francis William Aston, education.academic.advisors, Joseph John Thomson
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson opposed by wilhelm ostwald
joseph john thomson worked under john william strutt, base.kwebbase.kwconnection.other, John William Strutt
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson superseded by niels henrik david bohr
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson fellow-psychic with arthur conan doyle
Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle., base.kwebbase.kwsentence.contains_connections, joseph john thomson fellow-psychic with alfred russel wallace
George Paget Thomson, education.academic.advisors, John William Strutt
Joseph John Thomson, education.academic.advisees, William Henry Bragg
He taught Langevin, Bragg and Oppenheimer., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
Ernest Rutherford, base.kwebbase.kwtopic.has_sentences, Rutherford became the first research student to work under English physicist J.J. Thomson at the Cavendish Laboratory.
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to albert einstein
Joseph John Thomson, common.topic.notable_for, g.125ddfsdr
m.02kq0w4, education.education.student, Joseph John Thomson
joseph john thomson work related to julius plucker, base.kwebbase.kwconnection.subject, Joseph John Thomson
Rays of positive electricity and their application to chemical analyses, book.written_work.author, Joseph John Thomson
joseph john thomson worked under john william strutt, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson work related to johann wilhelm hittorf
joseph john thomson taught max born, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson priority dispute with philipp eduard anton lenard, base.kwebbase.kwconnection.other, Philipp Lenard
joseph john thomson knew arthur balfour, base.kwebbase.kwconnection.other, Arthur Balfour
By 1934, it had been established that the nucleus consisted of two kinds of particles,  protons and neutrons., base.kwebbase.kwsentence.previous_sentence, During the 30s, Bohr turned to a new, but related, topic: the composition of the atomic nucleus.
Joseph John Thomson, base.kwebbase.kwtopic.connections_from, joseph john thomson taught paul langevin
His work related to that of Becquerel and Lorenz., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
Joseph John Thomson, people.person.education, m.03lsdr7
G. I. Taylor, education.academic.advisors, Joseph John Thomson
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, Using his cloud chamber, he demonstrated that ions are constantly present in the air, incessantly regenerating.
joseph john thomson taught paul langevin, base.kwebbase.kwconnection.sentence, He taught Langevin, Bragg and Oppenheimer.
Edward Routh, education.academic.advisees, Joseph John Thomson
Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus., base.kwebbase.kwsentence.previous_sentence, At his suggestion, the name \"proton\"  was given to the hydrogen nucleus in 1920.
Arthur Balfour, base.kwebbase.kwtopic.connections_to, joseph john thomson knew arthur balfour
joseph john thomson work related to albert einstein, base.kwebbase.kwconnection.sentence, This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later.
Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle., base.kwebbase.kwsentence.contains_connections, joseph john thomson fellow-psychic with arthur conan doyle
He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
joseph john thomson knew arthur balfour, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson taught william henry bragg, base.kwebbase.kwconnection.subject, Joseph John Thomson
Joseph John Thomson, book.author.works_written, An introduction to chemical energetics
The electron in chemistry, book.written_work.author, Joseph John Thomson
Joseph John Thomson, education.academic.advisees, Owen Willans Richardson
joseph john thomson work related to william crookes, base.kwebbase.kwconnection.other, William Crookes
Jj-thomson2.jpg, common.image.size, m.02brjtm
Ernest Rutherford, base.kwebbase.kwtopic.has_sentences, He also showed that bombardment with alpha particles had its limits, finding that large nuclei repelled them without disintegrating.
Joseph John Thomson, book.author.works_written, Recollections and Reflection
George Paget Thomson, people.person.profession, Physicist
Joseph John Thomson, education.academic.advisees, H. Stanley Allen
In 1914, he found that positive rays consist of hydrogen nuclei., base.kwebbase.kwsentence.previous_sentence, During the War, Rutherford's also continued to work at Manchester.
His work related to that of Becquerel and Lorenz., base.kwebbase.kwsentence.contains_connections, joseph john thomson work related to antoine-henri becquerel
By 1934, it had been established that the nucleus consisted of two kinds of particles,  protons and neutrons., base.kwebbase.kwsentence.kwtopic, Niels Henrik David Bohr
Joseph John Thomson, education.academic.advisees, Niels Henrik David Bohr
Rutherford now began to investigate the nature of alpha rays., base.kwebbase.kwsentence.next_sentence, He was sure they consisted of positively charged particles and specifically either hydrogen or helium ions.
joseph john thomson work related to antoine-henri becquerel, base.kwebbase.kwconnection.other, Antoine Henri Becquerel
Joseph John Thomson, common.topic.image, J
Conduction of electricity through gases, book.written_work.author, Joseph John Thomson
joseph john thomson opposed by wilhelm ostwald, base.kwebbase.kwconnection.subject, Joseph John Thomson
joseph john thomson work related to julius plucker, base.kwebbase.kwconnection.relation, work related to
In 1884,  Thomson was chosen to replace Rayleigh as director of the Cavendish., base.kwebbase.kwsentence.kwtopic, Joseph John Thomson
joseph john thomson knew arthur balfour, base.kwebbase.kwconnection.sentence, Knew Prime Minister Balfour.
joseph john thomson taught william henry bragg, base.kwebbase.kwconnection.other, William Henry Bragg
Joseph John Thomson, influence.influence_node.influenced, Lewis Fry Richardson
Niels Henrik David Bohr, base.kwebbase.kwtopic.has_sentences, By 1934, it had been established that the nucleus consisted of two kinds of particles,  protons and neutrons.
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, He also found that not only X-rays, but uranium rays and ultraviolet rays, produced the condensation nuclei.
In 1919, Rutherford succeeded Thomson as director of the Cavendish Laboratory at Cambridge., base.kwebbase.kwsentence.previous_sentence, Also in 1920, Rutherford speculated that uncharged particles, which were later called neutrons, must also exist in the nucleus.
Joseph John Thomson, base.nobelprizes.nobel_honor.nobel_prize_winner, m.0646h0k
Joseph John Thomson, people.person.education, m.0n1hw_h
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, Aitken theorized that  the dust particles acted as the nuclei on which the water vapor condensed.
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, He taught Langevin, Bragg and Oppenheimer.
joseph john thomson work related to albert einstein, base.kwebbase.kwconnection.subject, Joseph John Thomson
However, he later observed the same effect when alpha particles were fired into nitrogen., base.kwebbase.kwsentence.kwtopic, Ernest Rutherford
Jj-thomson2.jpg, common.image.appears_in_topic_gallery, Joseph John Thomson
joseph john thomson priority dispute with philipp eduard anton lenard, base.kwebbase.kwconnection.subject, Joseph John Thomson
Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle., base.kwebbase.kwsentence.contains_connections, joseph john thomson fellow-psychic with alfred, lord tennyson
Ernest Rutherford, base.kwebbase.kwtopic.has_sentences, In 1919, Rutherford succeeded Thomson as director of the Cavendish Laboratory at Cambridge.
The Corpuscular Theory of Matter, book.written_work.author, Joseph John Thomson
Charles Thomson Rees Wilson, base.kwebbase.kwtopic.has_sentences, In 1895 German physicist Roentgendiscovered X-rays, and Wilson immediately realized how useful X-rays could be in his studies on clouds.
joseph john thomson fellow-psychic with alfred russel wallace, base.kwebbase.kwconnection.sentence, Fellow member of Society for Psychical Research with physicists Lodge,  author Carroll,  evolutionist Wallace, poet Tennyson, and Conan Doyle.
Albert Einstein, base.kwebbase.kwtopic.connections_to, joseph john thomson work related to albert einstein
Joseph John Thomson, base.kwebbase.kwtopic.has_sentences, This was the first step towards Einstein's famous law of the equivalence of mass and energy published a decade later.

Answer: Electron