CE ÎNSEAMNĂ RADIATION ÎN ENGLEZĂ?
radiație
În fizică, radiația este un proces în care undele electromagnetice călătoresc printr-un vid sau prin medii care conțin materii; nu este necesară existența unui mijloc de propagare a valurilor. O definiție diferită, dar înrudită, spune că radiația este un subset al acestor valuri electromagnetice combinate cu o clasă de particule energetice subatomice cu energii cinetice foarte mari; acestea se numesc radiații ionizante, iar particulele se numesc radiații particulare. Alte tipuri de valuri, cum ar fi cele acustice, seismice, hidraulice și altele, nu sunt de obicei considerate forme de "radiație" în ambele sensuri. Vom lua în considerare prima definiție și vom reveni la cea de-a doua. Cuvântul provine din fenomenul undelor care radiază dintr-o sursă. Acest aspect conduce la un sistem de măsurători și unități fizice care se aplică tuturor tipurilor de radiații. Deoarece o astfel de radiație se extinde pe măsură ce trece prin spațiu și pe măsură ce energia ei este conservată, puterea tuturor tipurilor de radiații care radiază dintr-o sursă punctuală urmează o lege inverso-pătrată în raport cu distanța de la sursă.
Definiția radiation în dicționarul Engleză
Prima definiție a radiației în dicționar este emisia sau transferul de energie radiantă sub formă de particule, unde electromagnetice, sunet etc. Alte definiții ale radiației sunt particulele emise, de exemplu particulele și razele gamma emise în decăderea nucleară. Radiația este, de asemenea, numită: tratament radioterapie utilizând o substanță radioactivă.
CITATE ÎN ENGLEZĂ CU «RADIATION»
Citate renumite și propoziții cu cuvântul
radiation.
Information of fundamental importance to the general problem of atomic structure has resulted from systematic studies of the cosmic radiation carried out by the Wilson cloud-chamber method.
When X-rays traverse matter of any kind, this matter becomes a source of a radiation similar in character to that of the primary radiation falling upon it.
The process of radiation may be, and is, continuous - at any rate within limits extending to far smaller quantities than the quantum.
Direction coupling between the various radiations generated in a nuclear reaction both with one another and with the initiating radiation can also be detected and measured by coincidences; this provides valuable information about the structure of the atomic nuclei.
In this case, the particle formed has correspondingly less energy, whereas the product nucleus passes into the ground state with emission of the quantity of energy saved as gamma radiation.
The material particle nature of primary cosmic radiation has been confirmed, although the processes turned out to be extraordinarily more complicated than we had assumed.
I am now almost certain that we need more radiation for better health.
My main frustration is the fear of cancer from low dose radiation, even by radiologists.
Too many radiologists still believe there is a risk from a chest x-ray. Few radiologists can explain radiation to the patient in words the patient can understand.
It is likely that we need more radiation to improve our longevity.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «RADIATION»
Descoperă întrebuințarea
radiation în următoarea selecție bibliografică. Cărți în legătură cu
radiation și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Radiation Detection and Measurement
This is the resource that engineers turn to in the study of radiation detection.
2
Radiation Oncology: A Question-based Review
It is also an ideal preparation tool for written and oral board examinations. Organized in chapters and sections by site, the book covers in detail all the sites and cancer types currently treated with radiotherapy.
Boris Hristov, John P. Christodouleas, Steven H. Lin,
2010
3
Basic
Radiation Oncology
The third section describes radiation treatment regimens appropriate for the main cancer sites and tumor types. The book has been designed to ensure that the reader will find it easy to use.
Murat Beyzadeoglu, Gokhan Ozyigit, Cüneyt Ebruli,
2010
4
Introduction to Radiological Physics and
Radiation Dosimetry
A straightforward presentation of the broad concepts underlying radiological physics and radiation dosimetry for the graduate-level student.
Frank Herbert Attix,
2008
5
Radiation: Doses, Effects, Risks
Few scientific issues arouse as much public controversy as the effects of radiation. This booklet is an attempt to summarize what is known about radiation and provide a basis for further discussion and debate.
United Nations Environment Programme,
1985
6
Radiation: What It Is, What You Need to Know
The essential guide to radiation: the good, the bad, and the utterly fascinating, explained with unprecedented clarity. Earth, born in a nuclear explosion, is a radioactive planet; without radiation, life would not exist.
Robert Peter Gale, Eric Lax,
2013
7
An Introduction to Atmospheric
Radiation
This book describes interactions between the atmosphere and radiation.
This book looks at the many different types of radiation. Find out where radiation comes from, why it is important, and how it can be extremely dangerous. Book jacket.
9
Handbook of
Radiation Oncology: Basic Principles and ...
Whether you are a practicing radiation oncologist or a student of medicine, nursing, physics, dosimetry, or therapy, this handbook is a valuable resource covering the issues most pertinent to patients undergoing radiation therapy.
Bruce G. Haffty, Lynn D. Wilson,
2009
10
Applied
Radiation Chemistry:
Radiation Processing
Applied Radiation Chemistry takes a long hard look at the entire field of radiation processing: its history, the current state of technology, level of use, controversial applications, and promising developments.
Robert J. Woods, Alexei K. Pikaev,
1994
ȘTIRI NOI CARE INCLUD TERMENUL «RADIATION»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
radiation în contextul următoarelor știri.
New Study Questions Use of Whole-Brain Radiation to Treat Cancer
CHICAGO—Using whole-brain radiation to treat cancer that has spread to the brain is a treatment that for many patients is worse than the disease, a new study ... «Wall Street Journal, Mai 15»
13 Workers Exposed To Radiation At N.M. Nuclear Waste Dump
The plant's safety systems quickly kicked in: The air from inside the underground facility was sucked through a series of filters designed to catch radiation before ... «NPR, Feb 14»
Radiation Levels Fall after Nuclear Waste Leak in New Mexico
Radiation levels within and around the United States' only deep-underground nuclear waste facility continue to drop, nearly two weeks after a mysterious leak ... «Scientific American, Feb 14»
Mexico men detained over Mexico radiation truck robbery
"None are showing immediate signs of radiation poisoning," said Mr Noble. They have been discharged by doctors but have been handed over to Mexican ... «BBC News, Dec 13»
Radiation levels hit new high near Fukushima water tanks
Radiation levels around tanks storing contaminated water at Japan's crippled Fukushima nuclear plant have risen by a fifth to a new high, officials say. «BBC News, Sep 13»
Fukushima radiation levels 18 times higher than previously thought
Radiation near a pipe connecting two other tanks had been measured at 230 ... the workers carried dosimeters to measure their exposure to radiation, and some ... «The Guardian, Sep 13»
What is radiation and how dangerous is it?
But if the reactor becomes badly damaged - as happened in Fukushima in Japan in 2011 - radiation can escape and become dangerous to the environment. «CBBC Newsround, Aug 13»
How Radiation in Space Poses a Threat to Human Exploration …
Radiation in space takes the form of subatomic particles from the sun as well as from sources in the Milky Way galaxy and beyond. These high-speed particles ... «Space.com, Mai 13»
Fukushima Watch: Food Exports Still Restricted by Radiation Fears
That's because the U.S. is one of 44 countries and regions that still haven't lifted all restrictions on food imports from Japan due to worries about radiation in the ... «Wall Street Journal, Mar 13»
Report: Fukushima's radiation damaged more souls than bodies
As Fukushima Daiichi unraveled in global public view with fire, explosions and radioactive emissions for weeks, people living nearby were exposed to radiation ... «CNN, Feb 13»