- Discover essay samples


4.9 of 5.0 (185 reviews)

549 words
Science & Nature

Supernovas Page 1
Supernovas Page 2
The above thumbnails are of reduced quality. To view the work in full quality, click download.

A very large star explodes, somewhere in the unfathomable space of our galaxy. The star's core collapses. The monstrous pressure crushes its atoms and smashes their electrons into the nuclei. There, the negatively charged protons change to neutrons and neutrinos. Billions of neutrinos particles, that have no electrical charge and little or no mass, escape through the star's outer shell into space. Traveling at nearly the speed of light, they penetrate clouds, reach Earth, and pass harmlessly through the bodies of millions of people and everything else in their ways.
A Supernova such as this occurs about once every 30 years in any one galaxy. At some time in their long lives, the supernova-spawned neutrinos of 20 million electron voltes or less interact with matter. These neutrinos include low energy electrons that give off light and can be detected in pure water.
are massive exploding giant stars. When the explosion occurs, the resulting illumination can be as bright as an entire galaxy. One of the most energetic explosive happenings known is a supernova. occur at the end of a stars lifetime, when its nuclear fuel is exhausted an it is no longer supported by the release of nuclear energy. If the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast waver that ejects the stars envelope into interstellar space. The result of the collapse may be, in some cases, a rapidly rotating neutron start that can be observed many years later as a radio pulsar. As a result of gravitational forces acting against the nuclear structure of the core of a fuel depleted star, tremendous shock wavers are generated which cause the outside layers of the star to be blown away from the core. This can happen in one of two ways depending on the type of supernova.
There are two main type of supernovae Type I and Type II then others branch off of these. The Type I involves two stars. One star is a white dwarf whose gravitational attraction is so intense that it is capable of siphoning off material from its companion. Unfortunately for the star, the white dwarf exceeds its Chandrasekhar limit of stability causing it to go into thermonuclear instability and produces one of the largest explosions known in the universe, the Type I SN. There are currently three types of Type I SN accepted by the astronomical community in general. The subclass types are basically determined by the state of the white dwarf's companion star, though to qualify as a Type I SN the companion should have released its hydrogen layer. They carry no spectroscopic evidence of hydrogen gas in the exploding material. Lack of oxygen indicates a beginning in highly evolved stars that have exhausted or ejected their hydrogen. Type II , while they also apparently derive from well-evolved stars, have abundant hydrogen in addition to the many other elements identifiable in their spectra. Current thinking is that Type Is result from rarer and much more massive stars then Type Is. Such stars with from about 8 times to as much as 50 times the mass of the sun, burn a sequence of heavier elements starting with hydrogen. Each supernova stage occurs at a suceedingly higher temperature and ...

You are currently seeing 50% of this paper.

You're seeing 549 words of 1097.

Keywords: supernova, supernova knyga, supernova (2020 film), supernova filmas, supernova imdb, supernova player, supernova uab, supernova_plus

Similar essays


is a science and a study of behavior and mental processes. Some parts of that we use in everyday life and in extra curricular activities are perception, learning, memory, thinking, and language. There are many extra curricular activities that uses these concepts but for now I will focus on the sport of soccer. I have played soccer since I was f...

75 reviews
Venus Flytrap

Venus flytrap What does it eat? Flies and other flying insects supplement its nutrition from the soil on which it lives. Sometimes if there is a large it will eat a small frog or toad. The Venus flytrap lives on soils that are poor in nutrients, and in particular nitrogen compounds, such as nitrates, that the roots can absorb. The insect "diet"...

173 reviews
The Atom

AP Physics Period 2 In the spring of 1897 J.J. Thomson demonstrated that the beam of glowing matter in a cathode-ray tube was not made of light waves, as "the almost unanimous opinion of German physicists" held. Rather, cathode rays were negatively charged particles boiling off the negative cathode and attracted to the positive anode. These parti...

114 reviews

This paper will define and discuss the volcano to include: types of volcanoes, formation of a volcano, and elements of a volcano; such as, lava, rock fragments, and gas. This paper also tells a little bit about volcanic activity in different parts of the world. What is a volcano? A volcano is a vent in the earth from which molten rock and gas er...

140 reviews
Coral Reefs 3

Coral reefs are one of the oldest types of living systems on earth, and certainly one of the most spectacular. They are massive underwater structures formed by the limestone skeletons of tiny invertebrate animals. Reefs house a greater diversity of body forms, chemistry, and animal phyla (thirty-two compared to the eight that inhabit the most biodi...

210 reviews
Atsisiųsti šį darbą