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History Of Particle Physics
The idea that matter consists of smaller particles and that there exists a limited number of sorts of primary, smallest particles in nature has existed in natural philosophy at least since the 6th century BC. Such ideas gained physical credibility beginning in the 19th century, but the concept of "elementary particle" underwent some changes in its meaning: notably, modern physics no longer deems elementary particles indestructible. Even elementary particles can decay or collide destructively; they can cease to exist and create (other) particles in result. Increasingly small particles have been discovered and researched: they include molecules, which are constructed of atoms, that in turn consist of subatomic particles, namely atomic nuclei and electrons. Many more types of subatomic particles have been found. Most such particles (but not electrons) were eventually found to be composed of even smaller particles such as quarks. Particle physics studies these smallest particles a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton
A proton is a stable subatomic particle, symbol , H+, or 1H+ with a positive electric charge of +1 ''e'' elementary charge. Its mass is slightly less than that of a neutron and 1,836 times the mass of an electron (the proton–electron mass ratio). Protons and neutrons, each with masses of approximately one atomic mass unit, are jointly referred to as "nucleons" (particles present in atomic nuclei). One or more protons are present in the nucleus of every atom. They provide the attractive electrostatic central force which binds the atomic electrons. The number of protons in the nucleus is the defining property of an element, and is referred to as the atomic number (represented by the symbol ''Z''). Since each element has a unique number of protons, each element has its own unique atomic number, which determines the number of atomic electrons and consequently the chemical characteristics of the element. The word ''proton'' is Greek for "first", and this name was given to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kanada (philosopher)
Kanada may refer to: *Kanada (philosopher), the Hindu sage who founded the philosophy of Vaisheshika *Kanada (family of ragas), a group of ragas in Hindustani music *Kanada (surname) *Kanada Station, train station in Fukuoka, Japan *Kannada, one of the major Dravidian languages of India *Kannada people *Canada, a country in North America (as it is spelled in many languages) *Kanada warehouses, Auschwitz, storage facilities in Auschwitz for looted property See also *Canada (other) *Kannada (other) *Kaneda Kaneda is a Japanese surname. Notable people with the surname include: * Hiroshi Kaneda (born 1953), astronomer * Masaichi Kaneda (1933–2019), baseball player * Sekiryo Kaneda (died 1949), president of Nintendo * Mario Kaneda (born 1976), crea ..., a Japanese surname * Kanata (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Philosophers
Indian philosophy refers to philosophical traditions of the Indian subcontinent. A traditional Hindu classification divides āstika and nāstika schools of philosophy, depending on one of three alternate criteria: whether it believes the Vedas as a valid source of knowledge; whether the school believes in the premises of Brahman and Atman; and whether the school believes in afterlife and Devas. There are six major schools of Vedic philosophy— Nyaya, Vaisheshika, Samkhya, Yoga, Mīmāṃsā and Vedanta, and five major heterodox (sramanic) schools—Jain, Buddhist, Ajivika, Ajñana, and Charvaka. However, there are other methods of classification; Vidyaranya for instance identifies sixteen schools of Indian philosophy by including those that belong to the Śaiva and Raseśvara traditions.Cowell and Gough, p. xii.Nicholson, pp. 158-162. The main schools of Indian philosophy were formalised and recognised chiefly between 500 BCE and the late centuries of the Common Era. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicurus
Epicurus (; grc-gre, Ἐπίκουρος ; 341–270 BC) was an ancient Greek philosopher and sage who founded Epicureanism, a highly influential school of philosophy. He was born on the Greek island of Samos to Athenian parents. Influenced by Democritus, Aristippus, Pyrrho, and possibly the Cynics, he turned against the Platonism of his day and established his own school, known as "the Garden", in Athens. Epicurus and his followers were known for eating simple meals and discussing a wide range of philosophical subjects. He openly allowed women and slaves to join the school as a matter of policy. Of the over 300 works said to have been written by Epicurus about various subjects, the vast majority have been destroyed. Only three letters written by him—the letters to ''Menoeceus'', ''Pythocles'', and ''Herodotus''—and two collections of quotes—the ''Principal Doctrines'' and the ''Vatican Sayings''—have survived intact, along with a few fragments of his other writing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Democritus
Democritus (; el, Δημόκριτος, ''Dēmókritos'', meaning "chosen of the people"; – ) was an Ancient Greek pre-Socratic philosopher from Abdera, primarily remembered today for his formulation of an atomic theory of the universe. None of his work has survived. Life Although many anecdotes about Democritus' life survive, their authenticity cannot be verified and modern scholars doubt their accuracy. Democritus was said to be born in the city of Abdera in Thrace, an Ionian colony of Teos,. Ancient accounts of his life have claimed that he lived to a very old age, with some writers claiming that he was over a hundred years old at the time of his death. Philosophy and science states that the relation between Democritus and his predecessor Leucippus is not clear; while earlier ancient sources such as Aristotle and Theophrastus credit Leucippus with the invention of atomism and credit its doctrines to both philosophers, later sources only credit Democritus, making defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucippus
Leucippus (; el, Λεύκιππος, ''Leúkippos''; fl. 5th century BCE) is a pre-Socratic Greek philosopher who has been credited as the first philosopher to develop a theory of atomism. Leucippus' reputation, even in antiquity, was obscured by the reputation of his much more famous pupil, Democritus, who is also credited with the first development of atomic theory. Few details about Leucippus' life are known, and even his historical existence has on occasion been questioned. Biography Leucippus's dates are not recorded and he is often mentioned in conjunction with his more well-known pupil Democritus. Diogenes Laertius lists possible birthplaces as Miletus, Abdera and Elea. Some sources claim that around 440 or 430 BCE Leucippus founded a school at Abdera, with which his pupil, Democritus, was closely associated. There is mention that a Leucippus founded the city of Metapontum, which honored this Leucippus with a coin. Philosophical views Leucippus is typically associ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Greek Philosophers
Ancient Greek philosophy arose in the 6th century BC, marking the end of the Greek Dark Ages. Greek philosophy continued throughout the Hellenistic period and the period in which Greece and most Greek-inhabited lands were part of the Roman Empire. Philosophy was used to make sense of the world using reason. It dealt with a wide variety of subjects, including astronomy, epistemology, mathematics, political philosophy, ethics, metaphysics, ontology, logic, biology, rhetoric and aesthetics. Greek philosophy has influenced much of Western culture since its inception. Alfred North Whitehead once noted: "The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato". Clear, unbroken lines of influence lead from ancient Greek and Hellenistic philosophers to Roman philosophy, Early Islamic philosophy, Medieval Scholasticism, the European Renaissance and the Age of Enlightenment. Greek philosophy was influenced to some e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomism
Atomism (from Greek , ''atomon'', i.e. "uncuttable, indivisible") is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms appeared in both ancient Greek and ancient Indian philosophical traditions. Leucippus is the earliest figure whose commitment to atomism is well attested and he is usually credited with inventing atomism. He and other ancient Greek atomists theorized that nature consists of two fundamental principles: ''atom'' and ''void''. Clusters of different shapes, arrangements, and positions give rise to the various macroscopic substances in the world.Berryman, Sylvia, "Ancient Atomism", ''The Stanford Encyclopedia of Philosophy'' (Fall 2008 Edition), Edward N. Zalta (ed.)online/ref> The particles of chemical matter for which chemists and other natural philosophers of the early 19th century found experimental evidence were thought to be indivisibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ajiva
''Ajiva'' (Sanskrit) is anything that has no soul or life, the polar opposite of " jīva" (soul). Because ''ajiva'' has no life, it does not accumulate ''karma'' and cannot die. Examples of ajiva include chairs, computers, paper, plastic, etc. Five categories of Ajiva In Jainism, there are five categories which ''ajīva'' can be placed into. Out of these, four categories, ''Dharma'' (medium of motion), ''Adharma'' (medium of rest), ''Akasha'' (space) and ''Pudgala'' (matter) are described as the ''asti-kaya dravya's'' (substances which possess constituent parts extending in space) while the fifth category ''Kala'' is an ''anasti-kaya dravya'' (which has no extension in space). Dharma-Astikaya Dharmastikaya is formed from the two words: Dharma & Astikaya. Dharma here isn't referring to religion, but instead its referring to the medium of motion. Astikay itself is formed of two words: Asti & Kaya. Asti means space, body or mode and Kaya means collection. So Astikaya means a col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mahavira
Mahavira (Sanskrit: महावीर) also known as Vardhaman, was the 24th ''tirthankara'' (supreme preacher) of Jainism. He was the spiritual successor of the 23rd ''tirthankara'' Parshvanatha. Mahavira was born in the early part of the 6th century BCE into a royal Kshatriya Jain family in ancient India. His mother's name was Trishala and his father's name was Siddhartha. They were lay devotees of Parshvanatha. Mahavira abandoned all worldly possessions at the age of about 30 and left home in pursuit of spiritual awakening, becoming an ascetic. Mahavira practiced intense meditation and severe austerities for twelve and a half years, after which he attained '' Kevala Jnana'' (omniscience). He preached for 30 years and attained Moksha (liberation) in the 6th century BCE, although the year varies by sect. Historically, Mahavira, who revived and preached Jainism in ancient India, was an older contemporary of Gautama Buddha. Jains celebrate ''Mahavir Janma Kalyanak'' every ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parshvanatha
''Parshvanatha'' (), also known as ''Parshva'' () and ''Parasnath'', was the 23rd of 24 ''Tirthankaras'' (supreme preacher of dharma) of Jainism. He is the only Tirthankara who gained the title of ''Kalīkālkalpataru (Kalpavriksha in this "Kali Yuga").'' Parshvanatha is one of the earliest ''Tirthankaras'' who are acknowledged as historical figures. He was the earliest exponent of Karma philosophy in recorded history. The Jain sources place him between the 9th and 8th centuries BCE whereas historians consider that he lived in the 8th or 7th century BCE. Parshvanatha was born 273 years before Mahavira. He was the spiritual successor of 22nd tirthankara Neminatha. He is popularly seen as a propagator and reviver of Jainism. Parshvanatha attained moksha on Mount Sammeda ( Madhuban, Jharkhand) popular as Parasnath hill in the Ganges basin, an important Jain pilgrimage site. His iconography is notable for the serpent hood over his head, and his worship often includes Dharanendr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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