Radioactivity
noun
It refers to the process that happens when an atom's nucleus breaks down and releases energy or particles.
Nuclear power plants are a source of radioactivity.

Often appears as...
- high radioactivity
- nuclear radioactivity
Usage tips
Technical
noun
It refers to the process that happens when an atom's nucleus breaks down and releases energy or particles.
Nuclear power plants are a source of radioactivity.

Often appears as...
- high radioactivity
- nuclear radioactivity
Usage tips
Technical
Definition 1 of 1

Scientific Term
Radioactivity is primarily used in scientific contexts to describe atomic decay processes.

Marie Curie's work advanced our understanding of radioactivity.
Health Hazard
Radioactivity can imply danger due to its association with nuclear waste and radiation sickness.

The abandoned city remains high in radioactivity, posing health risks.
Energy Source
Radioactivity also refers to a powerful energy source, especially in contexts like nuclear reactors.

This country's reliance on the radioactivity-produced energy is growing.
Compare with
irradiateradiate
Video examples
Making safe nuclear...
you now have a company you run a company and this is what you you aim to do what are the biggest challenges regulatory energy safety I mean what are you what do you face yeah well I mean the from a regulatory standpoint these reactors are nice because they have had the potential to release radioactivity removed so I do
Video examples
Returning to Fukushima PIPE...
for radiation. So every day, Mr. Ouchi here prepares all the local food that they have from this region, and then tests it for radioactivity. Have there have been times where you've checked and the radiation levels have been too high? TAKAO
Video examples
Radioactivity: Expect...
Although alpha cannot penetrate your skin, if you inhale or injest a radioactive nucleus, the health consequences can be severe. Radioactivity is both useful and deadly, but it is all around us as a background to the natural world.
Video examples
History’s deadliest...
And a century later, it was repurposed as an insecticide. Synthetic green was probably the most dangerous color in widespread use, but at least it didn't share radium's property of radioactivity. Another color did, though - orange.
Video examples
How do nuclear power...
Apart from radioactivity, there's an even greater danger with spent fuel. Plutonium can sustain a chain reaction and can be mined from the waste to make bombs. Storing spent fuel is thus not only a safety risk for the environment,
Video examples
How science fiction can...
includes no knowledge of radioactivity or nuclear physics. In his day, no forecast of the future could have predicted X-rays, or the atom bomb, let alone the theory of relativity or quantum mechanics. As Arthur C. Clarke has said,
Video examples
How I Teach Kids to Love...
because they're going to have to live with radioactivity their whole life. And so what we did with them is that we'd discuss the data we collected that day, and talk about where we should be going next -- strategy, itinerary, etc
Video examples
Extremophiles 101 PIPE...
and radioactivity. These harsh environments don't seem hospitable for life but some organisms not only survive but thrive under such extreme conditions. The name extremophile means extreme lover.
Video examples
The genius of Marie...
In 1898, they reported two new elements, polonium, named for Marie's native Poland, and radium, the Latin word for ray. They also coined the term radioactivity along the way.
Video examples
David Deutsch: A new way...
that, from an individual's point of view, the world never improved. Nothing new was learned. The first clue to the origin of starlight happened as recently as radioactivity.
Video examples
Making safe nuclear...
you now have a company you run a company and this is what you you aim to do what are the biggest challenges regulatory energy safety I mean what are you what do you face yeah well I mean the from a regulatory standpoint these reactors are nice because they have had the potential to release radioactivity removed so I do
Video examples
Returning to Fukushima PIPE...
for radiation. So every day, Mr. Ouchi here prepares all the local food that they have from this region, and then tests it for radioactivity. Have there have been times where you've checked and the radiation levels have been too high? TAKAO
Video examples
Radioactivity: Expect...
Although alpha cannot penetrate your skin, if you inhale or injest a radioactive nucleus, the health consequences can be severe. Radioactivity is both useful and deadly, but it is all around us as a background to the natural world.
Video examples
History’s deadliest...
And a century later, it was repurposed as an insecticide. Synthetic green was probably the most dangerous color in widespread use, but at least it didn't share radium's property of radioactivity. Another color did, though - orange.
Video examples
How do nuclear power...
Apart from radioactivity, there's an even greater danger with spent fuel. Plutonium can sustain a chain reaction and can be mined from the waste to make bombs. Storing spent fuel is thus not only a safety risk for the environment,
Video examples
How science fiction can...
includes no knowledge of radioactivity or nuclear physics. In his day, no forecast of the future could have predicted X-rays, or the atom bomb, let alone the theory of relativity or quantum mechanics. As Arthur C. Clarke has said,
Video examples
How I Teach Kids to Love...
because they're going to have to live with radioactivity their whole life. And so what we did with them is that we'd discuss the data we collected that day, and talk about where we should be going next -- strategy, itinerary, etc
Video examples
Extremophiles 101 PIPE...
and radioactivity. These harsh environments don't seem hospitable for life but some organisms not only survive but thrive under such extreme conditions. The name extremophile means extreme lover.
Video examples
The genius of Marie...
In 1898, they reported two new elements, polonium, named for Marie's native Poland, and radium, the Latin word for ray. They also coined the term radioactivity along the way.
Video examples
David Deutsch: A new way...
that, from an individual's point of view, the world never improved. Nothing new was learned. The first clue to the origin of starlight happened as recently as radioactivity.
Example 1 of 10
Quote examples
Mike Pompeo
American Politician
The Islamic State has apparently gained control of several dozen kilograms of radioactive material from research institutions in Mosul, Iraq. It cannot be made into a nuclear bomb, but it could be used in a 'dirty bomb' to contaminate a wide area with radioactivity.

Quote examples
Rick Wilson
American Author
As a Republican governor, a senator, or member of Congress, or as a Republican candidate, let me remind you: You're known by the company you keep. By associating yourself with or endorsing Trump, you own Trump's toxic radioactivity with voters outside his base.

Quote examples
Pardis Sabeti
Iranian Scientist
There is - I will just say that there was a disastrous day where I discovered really what radioactivity is and that just because you don't see it doesn't mean that it's not everywhere, so - Yeah. I was a slow learner for sure.

Quote examples
Marie Curie
Polish Scientist
In 1903, I finished my doctor's thesis and obtained the degree. At the end of the same year, the Nobel prize was awarded jointly to Becquerel, my husband and me for the discovery of radioactivity and new radioactive elements.

Quote examples
Richard P. Feynman
American Physicist
With the exception of gravitation and radioactivity, all of the phenomena known to physicists and chemists in 1911 have their ultimate explanation in the laws of quantum electrodynamics.

Quote examples
Irene Joliot-Curie
French Scientist
We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium by bombardment with alpha rays.

Quote examples
Frederic Joliot-Curie
French Physicist
The first unquestionable proofs of the transformation of elements into different chemical elements have been provided by the study of the phenomena of radioactivity.

Quote examples
William Scranton
American Politician
My time inside there was very short compared to the amount of time it took to take on and take off this suit and to test me for how much radioactivity I have.

Quote examples
Mike Pompeo
American Politician
The Islamic State has apparently gained control of several dozen kilograms of radioactive material from research institutions in Mosul, Iraq. It cannot be made into a nuclear bomb, but it could be used in a 'dirty bomb' to contaminate a wide area with radioactivity.

Quote examples
Rick Wilson
American Author
As a Republican governor, a senator, or member of Congress, or as a Republican candidate, let me remind you: You're known by the company you keep. By associating yourself with or endorsing Trump, you own Trump's toxic radioactivity with voters outside his base.

Quote examples
Pardis Sabeti
Iranian Scientist
There is - I will just say that there was a disastrous day where I discovered really what radioactivity is and that just because you don't see it doesn't mean that it's not everywhere, so - Yeah. I was a slow learner for sure.

Quote examples
Marie Curie
Polish Scientist
In 1903, I finished my doctor's thesis and obtained the degree. At the end of the same year, the Nobel prize was awarded jointly to Becquerel, my husband and me for the discovery of radioactivity and new radioactive elements.

Quote examples
Richard P. Feynman
American Physicist
With the exception of gravitation and radioactivity, all of the phenomena known to physicists and chemists in 1911 have their ultimate explanation in the laws of quantum electrodynamics.

Quote examples
Irene Joliot-Curie
French Scientist
We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium by bombardment with alpha rays.

Quote examples
Frederic Joliot-Curie
French Physicist
The first unquestionable proofs of the transformation of elements into different chemical elements have been provided by the study of the phenomena of radioactivity.

Quote examples
William Scranton
American Politician
My time inside there was very short compared to the amount of time it took to take on and take off this suit and to test me for how much radioactivity I have.

Example 1 of 8
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