TTC Video

TTC Video – Nuclear Physics Explained
Course No. 1369 .MP4, AVC, 2000 kbps, 1280×720 English, AAC, 192 kbps, 2 Ch 24×30 mins + PDF Guidebook 11.22 GB
Lecturer: Lawrence Weinstein, Ph.D., Old Dominion University

Nuclear radiation is everywhere. At this moment, byproducts of cosmic rays are raining down on you from the galaxy, neutrinos produced in the Sun are piercing your body by the trillions, and nuclear particles from everyday sources in rocks, air, food, and water are bombarding you from all directions. If you had a supersensitive "Geiger counter" that picked up all nuclear particles, it would chirp nonstop.

Then, of course, there are nuclear weapons, which have arguably kept a fragile peace since the end of World War II, but which also threaten civilization with an unparalleled cataclysm. All of these insights, benefits, and dangers trace to an inconceivably tiny subatomic structure that was unknown until a century ago.

Throughout these lectures, Dr. Weinstein shows how nuclear physicists think, analyzing problems in a rapid, off-the-cuff style that dispenses with exact numbers in favor of rounding, making the math in the course easy to follow for anyone familiar with exponential notation. Viewers will find Dr. Weinstein's presentation clear, enthusiastic, and tinged with humor. Plus, Nuclear Physics Explained is richly illustrated with diagrams, charts, and computer animations, as well as lab demonstrations that bring the nuclear realm alive.
Move beyond Three-Mile Island
An astonishingly productive field, nuclear physics accounts for such diverse phenomena and applications as these:
Particle physics and beyond: The gigantic instruments often called "atom smashers" are in fact probes of nuclear and other subatomic matter, revealing not only the fundamental constituents of nature, but also how they combine.
Astrophysics and cosmology: Nuclear physics not only explains how atoms work but also how stars shine-and why they sometimes explode. It also gives insight into the birth and evolution of the universe.
Medical tools and treatments: Nuclear processes make possible a wide range of medical imaging tools, such as X-ray, CT scan, PET scan, and MRI, as well as treatments for killing cancer cells.
Nuclear power: The energy released from nuclear fission provides 20 percent of the electricity generated in the US, and a much larger fraction in countries such as France and Sweden.

Look inside the Nucleus
The key to understanding nuclear physics is knowing what goes on inside the nucleus. Here, Dr. Weinstein takes the mystery out of a notoriously arcane subject, explaining such key concepts as:
Protons and neutrons: An atom's central core, or nucleus, consists of positively charged protons and neutral neutrons (except for hydrogen, which has a single proton), held together by a short-range, but very strong, nuclear force. Surrounding the nucleus is a cloud of negatively charged electrons.

Radioactivity: Unstable isotopes are prone to disintegrate, releasing high-energy alpha particles (helium nuclei), beta particles (electrons or positrons), or gamma rays (high-frequency light waves). These are the primary forms of nuclear radiation.
Dr. Weinstein delves deeply into what binds protons and neutrons together, how both are made of different types of quarks, how the curve of binding energy explains processes of both fission and fusion, other types of radioactive decay, and the enormous utility of a two-dimensional graph of isotopes called the table of nuclides, which he presents in a colorful, easy-to-read chart.
How do we know all this? Dr. Weinstein answers this question with a fascinating four-lecture tour of the impressive electron linear accelerator and research halls at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility in Newport News, Virginia, which Dr. Weinstein knows inside and out. Later in the course, he takes you to the nearby Hampton University Proton Therapy Institute to witness the medical application of nuclear physics for targeting cancer cells with precision.
Risks and Rewards
Precision is vital with medical radiation so that healthy cells are not harmed. This underscores the risks as well as the benefits of radioactivity. Nuclear Physics Explained covers exactly what types of radiation are dangerous and which are less hazardous, including:

Radon: A radioactive gas, radon is a natural decay product of uranium and thorium in the Earth's crust. It can concentrate in mines and basements in certain geological regions, where it is easily inhaled. Radon is the leading cause of lung cancer among non-smokers.

Bananas: Bananas are mildly radioactive, though not dangerous, due to their potassium content, which includes a tiny percentage of a naturally occurring radioactive isotope. The "banana equivalent dose" is a humorous way to quantify the radioactivity around us.
You'll finish Nuclear Physics Explained by looking at how radiation reveals hidden worlds in space and time. For example, ratios of different isotopes can be used to date everything from human artifacts to continental collisions gamma-ray and neutrino telescopes chart the most energetic and distant events in the cosmos and cosmic rays-that ever-present rain of radiation from space-can be harnessed to analyze the structure of ancient buildings, such as the Great Pyramids. These examples and countless other applications show that nuclear physics is a versatile tool like no other.

Authors: TTC Video

Date: 2019

Upload Date: 8/1/2019 3:05:37 PM

Format: MP4

Pages:

OCR:

Quality:

Language: English

ISBN / ASIN: 0000000000

ISBN13:

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