Getting Meson (2024)

FAQs

What is the use of Meson? ›

The Meson program is used to configure the source directory and generates either a Ninja build file or Visual Studio® build files.

There are two different ways of invoking Meson. First, you can run it directly from the source tree with the command /path/to/source/meson.py . Second, Meson may also be installed in which case the command is simply meson .

Meson is a build system that is designed to be as user-friendly as possible without sacrificing performance. The main tool for this is a custom language that the user uses to describe the structure of his build. The main design goals of this language has been simplicity, clarity and conciseness.

Examples of mesons are the p, h, r and w mesons. Mesons do not last long because they have no net baryon or net lepton number and can decay. For instance a p₀ meson can decay into two photons. An object made of a red, a green and a blue quark is also colorless.

meson in British English

(ˈmiːzɒn ) noun. any of a group of elementary particles, such as a pion or kaon, that usually has a rest mass between those of an electron and a proton, and an integral spin. They are responsible for the force between nucleons in the atomic nucleus. Former name: mesotron.

Meson is available in the Python Package Index and can be installed with pip3 install --user meson . This does not require any special privileges. This will install the package in ~/. local/ , so you will have to add ~/.

meson-python is a Python build backend built on top of the Meson build system. It enables using Meson for the configuration and build steps of Python packages. Meson is an open source build system meant to be both extremely fast, and, even more importantly, as user friendly as possible.

To compile any given configuration, just go into the corresponding build directory and run meson compile . Meson will automatically add compiler flags to enable debug information and compiler warnings (i.e. -g and -Wall ). This means the user does not have to deal with them and can instead focus on coding.

Mesons are the interaction agents between nucleons (protons and electrons). The rest mass of the mesons lies between 250-100mₑ . The most common type of mesons are the pions (pi mesons), kaons (K mesons) and the eta meson (η-meson).

Mesons are made up of a quark and an anti-quark. Mesons have L = 0 and B = 0, and they have no net leptons or baryons in their ultimate decay products. The number of mesons is not conserved, so there is no "meson number." After the discovery of pions other particles were discovered in rapid pace.

Who coined the term meson? ›

Complete Step by Step Answer: Hideki Yukawa coined the term 'mesons'. A scientist called David Anderson discovered a particle Meson which has mass between electron and proton and the name of the particle was then changed to Mesotron by taking advice from Millikan.

Measurements of the lifetime of mesons which have traversed varying distances in air have been made and show that the value of τμc2 is constant. The existence of a spectrum of life-times is therefore excluded. The most probable value of τμc2 from our measurements is 2.6±0.3 × 10−14 sec./ev.

According to current quark theory mesons consist of quark–antiquark pairs. They exist with positive, negative, and zero charges, but when charged the charge has the same magnitude as that of the electron. They include the kaon, pion, and psi particles.

Because a meson consists of a particle and an antiparticle, it is very unstable.

According to the meson theory, protons and neutrons continuously emit and reabsorb pions. The transfer of these pions is responsible for a force of attraction in the same way as the exchange of electrons is responsible for bonds between adjacent atoms.

Explanation: Mesons are what are called exchange particles. Nuclear force is experienced by exchange of mesons inside the nucleus. This was first hypothesized by Yukawa to explain the short range of nuclear forces.

π - mesons are regarded as the nuclear glue to hold up neutrons and protons in nucleus. Assertion :Mesons have mass more than electron whereas hyperons have mass more than protons. Reason: Mesons (short lived) on decomposition gives mesons, electrons, positrons, neutrinos, antineutrinos and γ-rays.

Mesons are intermediate mass particles which are made up of a quark-antiquark pair. Three quark combinations are called baryons. Mesons are bosons, while the baryons are fermions. There was a recent claim of observation of particles with five quarks (pentaquark), but further experimentation has not borne it out.