background radiation

简明释义

背景辐射

英英释义

例句

1.Radiation detectors can distinguish between background radiation 背景辐射 and other sources of radiation.

辐射探测器可以区分<背景辐射>和其他辐射源。

2.The instruments are calibrated to measure levels of background radiation 背景辐射 accurately.

这些仪器经过校准，以准确测量<背景辐射>的水平。

3.Scientists study the effects of background radiation 背景辐射 on human health.

科学家研究<背景辐射>对人类健康的影响。

4.The safety standards for nuclear plants include monitoring background radiation 背景辐射 levels.

核电厂的安全标准包括监测<背景辐射>水平。

5.In certain areas, the level of background radiation 背景辐射 can be significantly higher due to natural sources.

在某些地区，<背景辐射>的水平可能由于自然来源而显著提高。

作文

Background radiation is a term used to describe the low-level radiation that is always present in our environment. This radiation comes from various natural and artificial sources, including cosmic rays from outer space, radioactive materials in the earth, and even some man-made products. Understanding background radiation (背景辐射) is crucial for both public health and scientific research, as it helps us comprehend the levels of radiation we are exposed to daily and its potential effects on our health.The primary sources of background radiation (背景辐射) include cosmic rays, which are high-energy particles from the sun and other stars, and terrestrial radiation, which originates from radioactive elements like uranium, thorium, and radon found in the earth's crust. Additionally, human activities such as nuclear power generation and medical procedures also contribute to the overall radiation levels we encounter.One significant aspect of background radiation (背景辐射) is that it varies depending on geographical location. For example, people living at higher altitudes are exposed to more cosmic radiation compared to those living at sea level. Similarly, areas with high natural radioactivity, such as regions with granite rocks, can have elevated levels of background radiation (背景辐射). This variability can influence the risk assessment for radiation exposure and the establishment of safety standards.Despite the constant presence of background radiation (背景辐射), it is important to note that the levels are generally low and not considered hazardous to health. The average person receives about 2 to 3 millisieverts (mSv) of radiation per year from background radiation (背景辐射) alone. To put this into perspective, a single chest X-ray can expose a person to approximately 0.1 mSv. However, certain populations, such as those living near nuclear power plants or in areas with high natural radiation, may receive higher doses, necessitating careful monitoring and regulation.In recent years, scientists have become increasingly interested in studying the effects of background radiation (背景辐射) on human health. Some studies suggest that low levels of radiation might even have beneficial effects, stimulating the immune system and promoting cellular repair mechanisms. This phenomenon, known as radiation hormesis, remains a topic of debate among researchers.Moreover, understanding background radiation (背景辐射) is essential for evaluating the safety of new technologies and practices. For instance, as we explore the potential of space travel and colonization of other planets, comprehending the cosmic component of background radiation (背景辐射) becomes critical. Astronauts will be exposed to higher levels of cosmic rays, which could pose significant health risks over extended periods.In conclusion, background radiation (背景辐射) is an integral part of our environment, stemming from both natural and artificial sources. While it is generally low and not harmful, understanding its sources and effects is vital for public health, safety regulations, and advancing scientific knowledge. As we continue to explore the universe and develop new technologies, the study of background radiation (背景辐射) will remain an important field of inquiry, ensuring that we protect ourselves and future generations from potential hazards associated with radiation exposure.