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Answers in fundamental physics

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Why is it helpful to know about the particles absent around us?

Posted on August 24, 2014 by admin
The detector to study the quark-gluon plasma

Being born abundantly in each collision of collider beams Indeed, most of the observed matter consist of only three kinds of elementary particles: protons, neutrons and electrons. Apart from them, there are neutrinos and quanta of electromagnetic radiation — photons … Continue reading →

What is the subject of study of modern elementary particle physics?

Posted on August 24, 2014 by admin
Quanta of fields --- elementary particles -- leave trail of bubbles in detectors

About systematic study of the variety of particles, one after another In the second half of the last century it was created quite harmonious theoretical schemes that described interactions of the known elementary particles and predicted the existence of those … Continue reading →

How is quantum field theory connected with elementary particle physics?

Posted on August 24, 2014 by admin
Quanta of fields --- elementary particles -- leave trail of bubbles in detectors

Predicting new particles and explaining the properties of those already known The basis of knowledge about the construction of the universe is the notion of elementary particles and their impact on surroundings. When a particle approaches close to another one, … Continue reading →

How do we know about the variety of elementary particles?

Posted on August 24, 2014 by admin
Nearly the most complicated detector ATLAS for the biggest collider LHC

Slowly but surely revealing the theoretically predicted particles… With their own hands physicists allow new species of particles that do not exist in substances to be born. The birth occurs when particle beams collide with either a target or each … Continue reading →

How did the Standard Model of electroweak interactions win the trust?

Posted on August 24, 2014 by admin
Bubbles indicate a trace of an electron after emission of a neutral intermediate boson

On one of the peaks of human thought in particle physics According to the model of weak interactions existed in the 60’s, that was based on the Fermi’s theory of beta decay, muon neutrinos interacting with matter are to turn … Continue reading →

Who was the first having understood the design of atom?

Posted on August 24, 2014 by admin
Electrons orbit the nucleus of an atom

Moving along atomic orbits without emission From the standpoint of classical electrodynamics, electrons in the planetary model of atoms would be continuously emitting and then, having lost their energy, fall into the nucleus. In 1913, Niels Bohr suggested that an … Continue reading →

How did they guess the existence of neutrinos?

Posted on August 24, 2014 by admin
Neutrinos appear in the beta decay of neutrons in nuclei

Departing together with electrons and carrying the invisible energy The discovery of neutrons, it seemed, has clarified the structure of matter. All elementary particles needed to build atoms were known. It only remained unclear where are the electrons observed in … Continue reading →

How do ‘accidental’ discoveries happen in physics?

Posted on August 24, 2014 by admin
Neutrinos from the explosion of an old star -- a supernova

Expecting antineutrinos from the sun, but getting them from a supernova After a huge amount of work carried out by scientists to find a coherent theoretical scheme or to create experimental unit, new knowledge comes as it were perfectly normal. … Continue reading →

Is there any reason to trust the scientific imagination?

Posted on August 24, 2014 by admin
The laser beam is used for very many purposes

Doing real that exists in fantasies A striking example of the implementation of the human imagination is a laser. The power of a narrow beam of light has long been intuitively realized by people and was immortalized in the novels … Continue reading →

How is the fundamental physics moving forward?

Posted on August 24, 2014 by admin
The simplest experiment to theory of gravitation

How the physical experiment and theory are pushing each other Since ancient times, science has developed alternating experimental and theoretical studies. Based on the experiment, the scientists constructed a theory, and if its predictions coincide with the results of other … Continue reading →

Can we say there is nothing but the well-known today in the universe?

Posted on August 24, 2014 by admin
The surface of a hypothetical cosmic non-topological soliton of the quantum field condensate

On the formation of particles from the quantum field condensate Space observations of recent decades led scientists to the conclusion about the existence of dark matter and dark energy, the nature of which is not clear. Theoretical physics gives an … Continue reading →

How have they guessed the existence of neutrons?

Posted on August 24, 2014 by admin
Three quarks bound into a neutron

Subtle in atomic nuclei, but penetrating when radiated In the early thirties it became clear that (i) nuclei could not consist of protons and electrons as it was thought at the time, (ii) in beta decay, the electrons emitted from … Continue reading →

How have studies of electrons and the atomic structure started?

Posted on August 24, 2014 by admin
The first man-made source of electrons -- cathode-ray tube

About unknown energy emitted by cathodes and radium… In the discovery of electrons, a prominent role has been played by so-called cathode rays. Initially, to explain this phenomenon, the wave hypothesis was put forward: cathode rays would be a process … Continue reading →

How has the quantum concept appeared?

Posted on August 24, 2014 by admin
The quantum formula for spectrum of thermal radiation, obtained by Planck

Trying to write the correct formula of thermal radiation… At the end of the XIX century, the dependence of the thermal-radiation energy upon body’s temperature was being described by the Rayleigh-Jeans formula that, however, was not consistent with experiments for … Continue reading →

Why are physicists so passionate about their work?

Posted on August 23, 2014 by admin
Schvartsschild solves an equation for the gravity of a black hole

Not noticing anything around except a physical problem Contacts with the harmony of the universe make physical studies fascinating. Very often a physicist realizes the unique ability to look beyond the border of known quantity, and this makes him/her to … Continue reading →

Is it worth spending time and money on fundamental physics?

Posted on August 22, 2014 by admin
Man develops a science, and it brings the new technology

Opening new technical opportunities a century after century… Of course, the understanding of the laws of the universe does not directly lead to significant improvements in people’s live. However, in the development of fundamental science a number of quite revolutionary … Continue reading →

What is the subject of research in the study of the universe?

Posted on August 21, 2014 by admin
The fundamental physics knows of elementary particles, quantum fields and expansion of the Universe

Shaping the laws of the universe from the properties of elementary particles… In fundamental physics, there are three closely related areas: physics of elementary particles, quantum field theory and physical cosmology. Their subjects of study are the space-time and elementary … Continue reading →

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