These particles, made up of protons and neutrons, are large and can only travel a short distance -- in fact, they can be stopped with just a piece of paper or even your skin. However, inhalation or ingestion of alpha particles can be very dangerous. Once inside your body, alpha ...
[单项选择题]The harm radiation has done to the Apollo crew members ___. 关键词: radiation members Apollo A.is insignificant B.seems overestimated C.is enormous D.remains unknown 本题来源:2013年西藏公共英语(Pets)考试真题卷(9) 查看最佳答案和解析...
Cosmic rays and background radiation ionize millions of cells every day and yet lifetime cancer incidence is only about 30% in the U.S. population. Other effects must modify this idea drastically. Cells can be repaired; they can be excreted without leading to a cancer, and so on. Whether...
can only travel a few cm in air radiation's range in air: several m radiation's range in air: > 100 m Range of radiation in air: > > a Range in a material Range in denser materials is because ionization occurs in equal distance. ...
Inescapable microwave irradiation during air travel can trigger brain edemas, blood pressure abnormalities, heart attacks, strokes and embolism in susceptible persons, especially at high altitudes where oxygen is deficient. German doctors have summarized the myriad organic disasters that occur within the...
Although gamma rays are electrically neutral, they can ionise atoms directly throughphotoelectric effectandCompton effect(Mcalister, 2012). It travels at speed of light and can travel thousands of meters in air before spending their energy (Kaur et al., 2018). Thus, they can easily penetrate ma...
Radiationis pretty scary stuff. You usually can't see, smell or taste it, and you can only detect it reliably with special devices that few people have lying around the house. Yet, we constantly hear that radiation causes a wide range of harmful effects, from cancer and sterility to severe...
ignite, light - cause to start burning; subject to fire or great heat; "Great heat can ignite almost any dry matter"; "Light a cigarette" set ablaze, set afire, set aflame, set on fire - set fire to; cause to start burning; "Lightening set fire to the forest" catch fire, take fi...
Through the work of Langevin33, one can calculate the sensitivity of a shielded cylindrical transducer in function of the ratio between the internal and external diameters, ϕ=ID/OD, and the electric potential piezoelectric constants of the ceramic compound, g31 and g33, M0=|Vp0|=OD2[g33...
The portion of the electromagnetic spectrum which is considered thermal covers the range of wavelength from 0.1 to 100 μm; in comparison, the visible light portion of the thermal spectrum in which humans can see is very narrow, covering only from 0.35 to 0.75 μm. If we were insects, we...