How can there be positrons? How did it come about?

Updated on science 2024-04-09
9 answers
  1. Anonymous users2024-02-07

    Einstein's mass-energy formula e=mc 2, although it gives the relationship between the energy produced and the loss of mass, does not mean that "mass produces energy". It can only be said: the production of energy is accompanied by a loss of mass.

  2. Anonymous users2024-02-06

    According to quantum mechanics, the universe was born in which positive matter and antimatter exist at the same time. Later, positive matter became dominant. In a vacuum, there is a very low probability that positrons and antielectrons will appear and annihilate at the same time. Unleash energy.

  3. Anonymous users2024-02-05

    What was said upstairs was extremely true.

    It seems that in recent years, there have been instantaneous positron particles, and they have existed for a very short time.

  4. Anonymous users2024-02-04

    Positrons and negatives are just a definition.

    The positron electric field lines are outward.

    The negative electron electric field lines are inward.

    It is generally separated from the atoms.

    Addendum: In the abstract, matter is only a carrier and manifestation of energy.

    Proven by scientists.

    The universe is full of dark energy.

    And all kinds of our cosmic matter may be composed of dark energy.

    Even black holes are no exception.

  5. Anonymous users2024-02-03

    Electrons and negative electrons are both related and distinct. The connection refers to electrons including positrons and negative electrons, and electrons in general refer to negative electrons. The difference is that electrons are a general term for negative electrons and positrons, but negative electrons simply refer to electrons that are negatively charged.

    Negative electrons are what we call electrons in our daily life, because electrons generally refer to electrons that move in a high-speed circular motion around atoms, and they are generally negatively charged. The electricity we use in our daily life refers to the formation of the high-speed movement of negatively charged electrons in the conductor, and the direction of the current is opposite to the direction of the movement of the electrons.

    The positron was first discovered by Anderson and others at the California Institute of Technology, and the moving orbit of the positron was observed in a cloud chamber. According to the experimental observation data, the mass and volume shape of the positron are exactly the same as the negative electron, but the only difference is that the positron belt is positive, but the negative electron belt we usually come into contact with is negative.

    Positrons are antimatter with negative electrons, and positrons are very rare in nature. There are two main reasons for this, one is that the atoms of the elementary particles that make up matter in nature are all negative electrons. Second, once the positron encounters the negative electron, annihilation occurs, and a large amount of energy can be released.

    According to laboratory observations and the research of relevant scientists, the process of annihilation of positrons and negative electrons into two gamma photons releases enormous energy orders of magnitude higher than that of nuclear energy.

    In summary, positrons and negative electrons are a pair of antimatter, and everything else is the same except for the difference in the charge they charge. In addition, when the positron and the negative electron meet, annihilation occurs, and at the same time, a huge amount of energy is released that is several orders of magnitude higher than that of nuclear energy, and it is converted into photons.

    One day in the future, it is likely that we will be able to use the energy generated by the positrons and negative electrons to sail the universe. The combustion of several tons of chemical fuel is not comparable to the energy released by the annihilation of a single gram of antimatter.

  6. Anonymous users2024-02-02

    Positrons are a type of elementary particles, positively charged, equal to mass and electrons, and are antiparticles of electrons. Also called positive electron. It was first predicted theoretically by Dirac.

    On August 2, 1932, Anderson and others from the California Institute of Technology in the United States solemnly announced to the world that they had discovered the positron. In fact, before Anderson, there was a couple of philosophers, Joliot-Curie (son-in-law and daughter of Pierre Curie), who first observed the existence of positrons, but they did not pay attention to it and missed this great discovery. The Curies also made outstanding contributions to mankind, and in addition to missing the discovery of the positron, they also missed the discovery of the neutron and the discovery of nuclear fission, so that they reached the threshold of the Nobel Prize in physics three times but finally failed to break through.

    However, they were awarded the Nobel Prize in Chemistry in 1935 for their outstanding contributions to radioactivity.

  7. Anonymous users2024-02-01

    It was the first time that mankind theoretically predicted the existence of antiparticles. Then, in 1932, Carl Anderson discovered and confirmed the existence of positrons through Wilson's delayering experiments on cosmic rays. Following Anderson's discovery of the positron, Chamberlais discovered the antiproton in 1955 and the neutron in 1956.

    Around the 60s of the 20th century, a series of antiparticles were discovered, and the discovery of antiparticles made people think that all particles have antiparticles corresponding to them.

    Soon after, a series of experiments were conducted that found that almost all particles have antiparticles, except for a few particles such as photons. Since ancient times, human beings have believed in the idea that the universe is symmetrical, and people can't help but think that since particles can form matter, why can't antiparticles form antimatter? In the current general theory of the origin of the universe, it is clearly stated that there is indeed antimatter, and it is also predicted that there should be an equal amount of matter and antimatter in the universe.

    However, the road to exploring antimatter is long and difficult. It has been nearly 70 years since the discovery of the first antiparticle, and only a few antiparticles have been obtained from experiments, and the first antiatom, the antihydrogen atom, has only been synthesized in recent years. And for the other types of anti-atoms and anti-molecules that can constitute antimatter, there is still nothing, let alone antimatter.

    The reason for these difficulties is that the antiparticles found are obtained from the cosmic ray pathway, and the cosmic rays first have to pass through the atmosphere as thick as 3000 km to 4000 km when they reach the earth, so most of the antiparticles in the rays have been neutralized with the particles in the atmosphere before reaching the earth. Therefore, the antiparticles that can be detected by people are extremely small, and the antiparticles are very unstable and easy to annihilate with the surrounding material particles.

    Therefore, the scientists' view is that there is no possibility of antimatter in the material world we live in, and even if it exists, it will quickly neutralize with the surrounding matter. Therefore, the hope of exploring antimatter can only be pinned on the universe. In the depths of the universe, there may be a space that is completely opposite to the material world, where there will be a large amount of antimatter, based on this consideration, scientists from many countries have worked together for several years, and the "Alpha Magnetic Spectroscopy" has finally ascended into space.

    After 10 days of spaceflight, it will make a preliminary survey of the presence of antimatter in the universe. By 2002, the Alpha Magnetic Spectrometer will be placed on the newly built Discovery space station, and large-scale detection of antimatter will begin.

  8. Anonymous users2024-01-31

    It is a positively charged electron. We generally think of electrons as negatively charged, but a physicist in history, Dirac, suggested the possibility of positrons, which was later confirmed. That's it in a nutshell.

  9. Anonymous users2024-01-30

    Positron (E+), also known as positron.

    Positrons are antiparticles of electrons that have the same properties as electrons except for their positive charge. Positrons are unstable particles that annihilation occur when they encounter electrons, emitting two gamma ray photons, each with an energy of . When the positron comes into contact with the nucleus, it will be annihilated with the electrons outside the nucleus, which is the principle of the positron gun.

    Positrons are not the basic components of matter on Earth. Although the positron is relatively stable, it quickly annihilates and transforms into photons as soon as it touches the electron, so it is not easy to observe.

Related questions
5 answers2024-04-09

Because in the hydrogen-hydrogen fusion of stars, two hydrogens first fuse to form helium-2, but helium-2 is an extremely unstable element, which will immediately decay and release a positron and become hydrogen 2, which is a stable element. >>>More

19 answers2024-04-09

There are a huge number of positive and negative charges within protons and neutrons, and the positive charge in the proton is 1 more than the negative charge, so the proton is positively charged. When a proton releases a positive charge, the number of positive and negative charges in the proton is the same, so it is no longer charged, and it becomes a neutron. Whereas, the neutron itself has the same number of positive and negative charges inside, so it is not charged. >>>More

11 answers2024-04-09

You love what you love and don't care what others like Savage girls are not really barbaric That's called arrogance Generally, that kind of girl is outgoing and flamboyant, more energetic, and likes to be coquettish It's really savage, and it depends on the five big and three rough people who are foul all day long You like the kind of birdie girl who is gentle and considerate will make some people feel bored.

10 answers2024-04-09

About 10% of high blood pressure is secondary hypertension (also known as symptomatic hypertension). The so-called secondary hypertension means that the cause of hypertension is "well documented", and the increase in blood pressure is just one of its more prominent symptoms. >>>More

8 answers2024-04-09

The temperature of a word is the feeling you imagine in your mind when you read a word. >>>More