Thermal Food Processing New Technologies and Quality Issues, Second Edition Contemporary Food Engine

author ivy   2 год. назад
17 views

0 Like   0 Dislike

How the Universe Works - Blow your Mind of the Universe - Space Discovery Documentary

The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model accounts for the fact that the universe expanded from a very high density and high temperature state, and offers a comprehensive explanation for a broad range of phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure and Hubble's Law.If the known laws of physics are extrapolated to the highest density regime, the result is a singularity which is typically associated with the Big Bang. Detailed measurements of the expansion rate of the universe place this moment at approximately 13.8 billion years ago, which is thus considered the age of the universe. After the initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity in halos of dark matter, eventually forming the stars and galaxies visible today. Timeline of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. On the left the dramatic expansion occurs in the inflationary epoch, and at the center the expansion accelerates (artist's concept; not to scale). Since Georges Lemaître first noted in 1927 that an expanding universe could be traced back in time to an originating single point, scientists have built on his idea of cosmic expansion. While the scientific community was once divided between supporters of two different expanding universe theories, the Big Bang and the Steady State theory, empirical evidence provides strong support for the former.[8] In 1929, from analysis of galactic redshifts, Edwin Hubble concluded that galaxies are drifting apart; this is important observational evidence consistent with the hypothesis of an expanding universe. In 1965 the cosmic microwave background radiation was discovered, which was crucial evidence in favor of the Big Bang model,[9] since that theory predicted the existence of background radiation throughout the universe before it was discovered. More recently, measurements of the redshifts of supernovae indicate that the expansion of the universe is accelerating, an observation attributed to dark energy's existence.[10] The known physical laws of nature can be used to calculate the characteristics of the universe in detail back in time to an initial state of extreme density and temperature.[11] The Big Bang theory developed from observations of the structure of the universe and from theoretical considerations. In 1912 Vesto Slipher measured the first Doppler shift of a "spiral nebula" (spiral nebula is the obsolete term for spiral galaxies), and soon discovered that almost all such nebulae were receding from Earth. He did not grasp the cosmological implications of this fact, and indeed at the time it was highly controversial whether or not these nebulae were "island universes" outside our Milky Way.[37][38] Ten years later, Alexander Friedmann, a Russian cosmologist and mathematician, derived the Friedmann equations from Albert Einstein's equations of general relativity, showing that the universe might be expanding in contrast to the static universe model advocated by Einstein at that time.[39] In 1924 Edwin Hubble's measurement of the great distance to the nearest spiral nebulae showed that these systems were indeed other galaxies. Independently deriving Friedmann's equations in 1927, Georges Lemaître, a Belgian physicist and Roman Catholic priest, proposed that the inferred recession of the nebulae was due to the expansion of the universe.[40] In 1931 Lemaître went further and suggested that the evident expansion of the universe, if projected back in time, meant that the further in the past the smaller the universe was, until at some finite time in the past all the mass of the universe was concentrated into a single point, a "primeval atom" where and when the fabric of time and space came into existence.[41] Starting in 1924, Hubble painstakingly developed a series of distance indicators, the forerunner of the cosmic distance ladder, using the 100-inch (2.5 m) Hooker telescope at Mount Wilson Observatory. #Universe #Space #Documentary

How The Universe Works - Universe Explore - Space Discovery Documentary

Explore the biggest question of all. How far do the stars stretch out into space? And what's beyond them? In modern times, we built giant telescopes that have allowed us to cast our gaze deep into the universe. Astronomers have been able to look back to near the time of its birth. They've reconstructed the course of cosmic history in astonishing detail. From intensive computer modeling, and myriad close observations, they've uncovered important clues to its ongoing evolution. Many now conclude that what we can see, the stars and galaxies that stretch out to the limits of our vision, represent only a small fraction of all there is. Does the universe go on forever? Where do we fit within it? And how would the great thinkers have wrapped their brains around the far-out ideas on today's cutting edge? For those who find infinity hard to grasp, even troubling, you're not alone. It's a concept that has long tormented even the best minds. Over two thousand years ago, the Greek mathematician Pythagoras and his followers saw numerical relationships as the key to understanding the world around them. But in their investigation of geometric shapes, they discovered that some important ratios could not be expressed in simple numbers. Take the circumference of a circle to its diameter, called Pi. Computer scientists recently calculated Pi to 5 trillion digits, confirming what the Greeks learned: there are no repeating patterns and no ending in sight. The discovery of the so-called irrational numbers like Pi was so disturbing, legend has it, that one member of the Pythagorian cult, Hippassus, was drowned at sea for divulging their existence. A century later, the philosopher Zeno brought infinity into the open with a series of paradoxes: situations that are true, but strongly counter-intuitive. In this modern update of one of Zeno's paradoxes, say you have arrived at an intersection. But you are only allowed to cross the street in increments of half the distance to the other side. So to cross this finite distance, you must take an infinite number of steps. In math today, it's a given that you can subdivide any length an infinite number of times, or find an infinity of points along a line. What made the idea of infinity so troubling to the Greeks is that it clashed with their goal of using numbers to explain the workings of the real world. To the philosopher Aristotle, a century after Zeno, infinity evoked the formless chaos from which the world was thought to have emerged: a primordial state with no natural laws or limits, devoid of all form and content. But if the universe is finite, what would happen if a warrior traveled to the edge and tossed a spear? Where would it go? It would not fly off on an infinite journey, Aristotle said. Rather, it would join the motion of the stars in a crystalline sphere that encircled the Earth. To preserve the idea of a limited universe, Aristotle would craft an historic distinction. On the one hand, Aristotle pointed to the irrational numbers such as Pi. Each new calculation results in an additional digit, but the final, final number in the string can never be specified. So Aristotle called it "potentially" infinite. Then there's the "actually infinite," like the total number of points or subdivisions along a line. It's literally uncountable. Aristotle reserved the status of "actually infinite" for the so-called "prime mover" that created the world and is beyond our capacity to understand. This became the basis for what's called the Cosmological, or First Cause, argument for the existence of God. #universedocumentary #spacedocumentary #Universe

How to Avoid Taking a Test | Lele Pons

WATCH MORE ▶ https://youtu.be/OXGjzQnIwmA SUBSCRIBE HERE ▶ http://www.youtube.com/channel/UCi9cDo6239RAzPpBZO9y5SA?sub_confirmation=1 THANKS FOR WATCHING! :) LIKE & SUBSCRIBE FOR MORE VIDEOS! ----------------------------------------------------------- FIND ME ON: Instagram | http://instagram.com/lelepons Twitter | http://twitter.com/lelepons Facebook | http://facebook.com/lele CAST: Lele Pons | http://youtube.com/c/lelepons Twan Kuyper | https://youtube.com/twan Adam Waheed | https://instagram.com/adamw Chelsea Rae Barton | https://instagram.com/chelsearae__ Diana Popick | https://instagram.com/dianapopick Bryant Wood | https://instagram.com/bryantwoodtv Jalen | https://instagram.com/jalenjh Sebastian Genta | https://instagram.com/sebastiangenta Nina Brock | https://instagram.com/ninacbrock FOLLOW THE SHOTS FAMILY ▶ http://instagram.com/theshotsfamily Shots Studios Channels: Alesso | http://youtube.com/c/alesso Anitta | http://youtube.com/c/anitta Anwar Jibawi | http://youtube.com/c/anwar Awkward Puppets | http://youtube.com/c/awkwardpuppets Delaney Glazer | http://youtube.com/c/deeglazer Hannah Stocking | http://youtube.com/c/hannahstocking Lele Pons | http://youtube.com/c/lelepons Marlon Wayans | http://youtube.com/c/marlonwayans Rudy Mancuso | http://youtube.com/c/rudymancuso Shots Studios | http://youtube.com/c/shots The Shots Family | http://youtube.com/c/theshotsfamily #Lele #LelePons

The Bill Nye theme except it’s playing in the classroom next door while your class is doing a packet

Credit to Joel.07z on Instagram for the inspiration

College Degrees That Earn The Most Money

The first 1,000 people to sign up to Skillshare will get their first 2 months for free: https://skl.sh/infographics9_3 What should you study if you want to make the most money in your life? These degrees will set you up for success and make it so that you can one day be rich! Deciding on a degree is a difficult choice. Although following your passions might be the most sensible, there’s only so many vacancies for football stars, astronauts, movies stars, and models. So getting practical might be the way forward. And if you’re being practical you better start about thinking about the money too. Because, what’s more practical than having enough cash to pay your bills, What degree has the graduate walking away from academia and landing a high paying job? In what subjects do the big dollars lay? That’s what we will try to find out in today’s Infographics Show as we look at– These degrees will make you the most money. So today we’re looking at five degrees that could have you paying back those fees and putting a dent in the student loan in a matter of months. In the United States there are more than 4500 colleges with programs that vary wildly in cost. The cost of getting a degree is based not only on the tuition fees and the expenses students pay on living, rent, books, transportation etc – there are numerous other costs. Some degree programs are free, some are sponsored by grants, and others accept students on a non-profit basis. Getting a degree will probably cost you anywhere in the range of $0 up to $55,000 and maybe much more when you factor in living costs. Today we’re are looking at five degree programs that should see you getting back that outlay within the first year of employment. First up and potentially the most lucrative of our five degrees is Petroleum engineering. With an average starting pay of $108,000 this industry is a sure way to start earning big fast. Petroleum engineering relates to the production of hydrocarbons, namely crude oil or natural gas. Once oil and gas exploration has taken place it needs to be extracted from the source and refined into a usable energy source. That’s where petroleum engineers come in. Petroleum engineering focuses requires an in-depth understanding of oil, water and gas within porous rock at high pressure. Graduates of a 4 year degree in petroleum engineering will need a solid understanding of math and science and be prepared to work in far flung places. Oil and gas workers can be offshore for months working on drilling rigs, refineries, and pipelines. After 10 or 12 years a petroleum engineering expert can expect to almost double that salary earning up to $185,000 per year making this the most lucrative career path on our list. SUBSCRIBE TO US -► http://bit.ly/TheInfographicsShow -------------------------------------------------------------------------- WEBSITE (SUGGEST A TOPIC): http://theinfographicsshow.com SOCIAL: Twitter........► https://twitter.com/TheInfoShow Subreddit...► http://reddit.com/r/TheInfographicsShow -------------------------------------------------------------------------- Sources for this episode: https://pastebin.com/BvipQV7T

Comments for video: