Zitat des Tages über Strahlung / Radiation:
Most medical physicists work in the physics of radiation oncology making sure that the desired dose is given to the cancer and the dose to normal tissues are minimized.
I go for my completely routine mammogram and then I get a call from my gynecologist. And she says, 'Well, I have some - it's not such great news, but here it is, but it's very small and we're just going to get in there and take it right out, right away, and then you'll probably have radiation.'
Radio Astronomy has added greatly to our understanding of the structure and dynamics of the universe. The cosmic microwave background radiation, considered a relic of the explosion at the beginning of the universe some 18 billion years ago, is one of the most powerful aids in determining these features of the universe.
I was terrified of getting the chemo. It's not pleasant. And the radiation is not pleasant.
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.
My main frustration is the fear of cancer from low dose radiation, even by radiologists.
In the Radiation Laboratory we count it a privilege to do everything we can to assist our medical colleagues in the application of these new tools to the problems of human suffering.
My experiments proved that the radiation of uranium compounds can be measured with precision under determined conditions and that this radiation is an atomic property of the element of uranium.
Everything was going for me, I didn't even know the meaning of the word insecurity and suddenly I am surrounded by words like operation, cancer, chemotherapy, radiation.
From the beginning of the Radiation Laboratory, I have had the rare good fortune of being in the center of a group of men of high ability, enthusiastic and completely devoted to scientific pursuits.
The campaign finance scandal in America is the global warming of American political life - with cash substituting for deadly solar radiation.
When you're asked to have a CT scan or a nuclear scan, do you know how much radiation that involves? How many of those sorts of scans have you already had? Is it necessary? Is there an alternative? I don't think many people know about that.
There were schools and hospitals who were ready to take people with undescribed injuries, but not necessarily ready to take people with severe radiation poisoning.
Many people who did not die right away came down with nausea, headache, diarrhea, malaise, and fever, which lasted several days. Doctors could not be certain whether some of these symptoms were the result of radiation or nervous shock.
In the '50s, a lot of stories were built around radiation and the proliferation of new technology. In the '70s, there were a lot of stories that dealt with the Vietnam War. So comic books have always been a reflection of the times we live in.
Around 1998, I went through lots of pressures and struggles. My children got married within eight months of each other, my son was diagnosed with cancer and went through major surgery and radiation, my mother had five life-threatening hospitalizations where I stayed with her, my husband's dental office burned to the ground.
Asteroids are deep-space bodies orbiting the Sun, not the Earth, and traveling to one would mean sending humans into solar orbit for the very first time. Facing those challenges of radiation, navigation and life support on a months-long trip millions of miles from home would be a perfect learning journey before a Mars trip.
The technology used to detect if vehicles are carrying radioactive material is so sensitive it can tell if a person recently received radiation as part of a medical procedure.
Black holes are pretty scary when you ponder them. They seem nihilistic, infinitely destructive on an inconceivable scale, notwithstanding the ideas of Hawking radiation.
Everything we know about the universe is studied by using telescopes or other instruments that look at visible light, infrared, ultraviolet or X-ray - different wavelengths of electromagnetic interactions. Only 4 percent of what's in the universe gives off electromagnetic radiation, so we don't have any handle on the rest.
At my age, the radiation will probably do me good.
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.
If you go on a journey to Mars and get into deep space, there is several hundred times, maybe 300 times the radiation.
An antenna collects radiation from a desired direction incident upon an area, called its collecting area, and focuses it on a receiver. An antenna is normally designed to maximize its response in the direction in which it is pointed and minimize its response in other directions.
I joined the Army and was sent to the MIT radiation laboratory after a few months of introduction to electromagnetic wave theory in a special course, given for Army personnel at the University of Chicago.
It took me 45 minutes to get in all of the suits and putting all the dosimeters on me so that they knew how much radiation I got and the protective boots and everything.
Radiation doesn't recognize borders. A meltdown in Japan or India, say, is a danger to the whole world. Wind circulates the radiation everywhere. Water quality is affected. We all eat the same fish. We use products from all over the world - if something is contaminated, it will cause harm.
I am a type-2 diabetic, and they took me off medication simply because I ate right and exercised. Diabetes is not like a cancer, where you go in for chemo and radiation. You can change a lot through a basic changing of habits.
My project was radiation damage of Si and Ge by energetic electrons, critical for the use of the recently developed semiconductor devices for applications in outer space.
A radiometer is a device for measuring the intensity of radiation. A microwave radiometer consists of a filter to select a desired band of frequencies followed by a detector which produces an output voltage proportional to its input power.
I've gone through back surgery a couple times, and of course, my radiation treatments for six weeks got me to the point where I was not able to play at the level that I was accustomed to.
The doctors realized in retrospect that even though most of these dead had also suffered from burns and blast effects, they had absorbed enough radiation to kill them. The rays simply destroyed body cells - caused their nuclei to degenerate and broke their walls.
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.
The source of this energy is the sun's radiation.
In some cases radiation reduces the incidence of cancer.
When I entered the field in July 1958 I believed what they told me about radiation risks. I spent much effort reducing the dose to patients in radiology.
