Chapter 10 : The Sun THE SUNS ATMOSPHERE * the sun is so hot that it neither has a liquid or solid matter anywhere inside of it * moving down into the sun there is denser and hotter masses Photosphere (“sphere of light”) * The photosphere is the innermost of layer of the three layers that comprise the suns atmosphere * A gas layer of the sun that has the most visible light * It is about 400 km thick * Density of the photosphere is low by the earth standards about
Words: 7381 - Pages: 30
LED TO AN UNDERSTANDING OF THE PHOTOELECTRIC EFFECT AND BLACK BODY RADIATION 2.2.1 describe Hertz's observation of the effect of a radio wave on a receiver and the photoelectric effect he produced but failed to investigate 2.2.2 outline qualitatively Hertz's experiments in measuring the speed of radio waves and how they relate to light waves 2.2.3 identify Planck's hypothesis that radiation emitted and absorbed by the walls of a black body cavity is quantised 2.2.4 identify Einstein's contribution
Words: 927 - Pages: 4
A Black Hole is formed when a star is dying, it’s invisible to the human eye, they use special telescopes to look at a Black Hole. They’re not very big, some Black Holes only grow to be the size of one atom. There’s no way Earth can be sucked in a Black Hole because there is no Black Hole close enough to Earth to suck Earth into it. The only way scientists know a black hole is there is because they can see how the Black Hole effects gravity and sucks up the light
Words: 1147 - Pages: 5
Intro, childhood and disease Stephen Hawking is a man of great interest. Born on January 8th, 1942, to Isobel and Frank Hawking. He grew up in Oxford, England. His father was a researcher of trophic medicine (and studied biology), and tried to convince him to go into the field as well. However, Hawking found that the sciences of medicine and biology were not “exact enough”. He was an low to average student in lower education and college as well. Until the age of twenty-one, he lived, for the most
Words: 868 - Pages: 4
radio emission corresponding to the exact center of the Galaxy. This point is referred to as “Sagittarius A* or ‘Sgr A*’” and today, Sgr A* is believed to consist of a black hole about 3 times larger than the Sun and has a mass of 2 million times that of the sun.Interestingly, the intensity of x-rays being emitted from this massive hole was much less than expected. Scientists then realized
Words: 386 - Pages: 2
Dark matter guides growth of supermassive black holes Summary This article is about a new study between elliptical galaxies dark matter and their black holes. Previous studies revealed a relationship between a black hole’s mass and the mass of all the stars in an elliptical galaxy. We know of dark matter because of its gravitational attraction by holding galaxies and galaxy clusters. The dark matter halo is in every galaxy and is as dense as a trillion suns. There was a study of over 3,000
Words: 462 - Pages: 2
Stellar Evolution A star begins as a very light dispensation of interstellar gases and dust particles over a distance of a few twelve lightyears. Although there is intensely low pressure existing between stars, this dispensation of gas exists instead of a real vacuum. If the density of gas becomes bigger than 0.1 particles per cubic centimeter, the interstellar gas grows uncertain. Any small alteration in density, and because it is impossible to have a perfectly even distribution in these
Words: 2358 - Pages: 10
by the interactions of atoms or molecules of a material through which the heat is being transferred. Convection involves the transfer of heat by the mixing and motion of macroscopic portions of a fluid. Radiation or radiant heat transfer, involves the transfer of heat by electromagnetic radiation that arises due to the temperature of a body. CONDUCTION Conductive Heat transfer takes place as conduction if there is a temperature gradient in a solid or fluid Conduction
Words: 1201 - Pages: 5
that aren’t man made, a star has a life cycle. A star is made of mostly hydrogen and helium. The reason a star shines is because it burns hydrogen into helium in their cores. Eventually a star will become a black hole or a white dwarf, and that will be the end of the life cycle for the star. Just like the life cycle has to end somewhere it has to start somewhere too. The life cycle starts as a Stellar Nebula and there
Words: 625 - Pages: 3
Astronomy 2B03: Lecture 2: What’s Out There? * Objects in the universe come in a hierarchy of scales and sizes: * Planets * Stars * Galaxies * The universe as a whole * These scales are so different from one step to the next that they are incredibly hard to comprehend all at once – no “everyday” experience to refer them to * If the Earth were a basketball how big would the moon be? Tennis ball * How many Earths would fit into the Sun? ~ 1 million
Words: 18912 - Pages: 76
