Why is nuclear fission considered a chain reaction? What is critical about critical mass? Why does nuclear fission produce radioactive waste? Explain what makes an isotope radioactive. Why do radioactive isotopes undergo radioactive decay? How does the energy re...
What makes cesium radioisotopes so toxic compared to other alkali metal isotopes undergoing radioactive decay? What is the source of the electrons produced in beta decay? a. an outer energy level b. a valence electron c. a neutron d. a proton There are many countries that are producing nucle...
One of the really interesting things about producing comics in Japan is that it's one of the few, kind of, autonomous careers that women can have. And so Japan has many, many female comic-book artists who write both for men, women, ...
where x0is the initial amount, and k is the growth rate. This model is applicable to multiple cases in nature. We see it in the growth of bacteria or simple population models, compound interest, the decay of radioactive materials, and so on. Exponential growth. (Photo Credit : Peter Her...
ETF Talk: ’Cause I’m Radioactive! Well, I’m not uptight Not unattractive Turn me on tonight ’Cause I’m radioactive… –The Firm, “Radioactive” Given the recent shift toward cleaner and more reliable energy sources, interest in nuclear energy is rising. This has led developed nations...
(22). In the 30 years since, there’s been almost no research involving wheat germ agglutinin and adsorptive endocytosis. So whether this happens in humans appears to be unknown, and obviously, it’s not easy to measure without opening a human brain or using things like radioactive tracers,...
Most iron meteorites formed by a very simple general sort of process: chondritic material was melted by heat from impacts or heat released by the radioactive decay of elements. The metal in most chondrites is ~85% iron, and ~15% nickel. There’s ~no natural way to concentrate large amou...
Some substances are radioactive: they naturally split into simpler substances and give off tiny particles or energy in the process. Again, this makes sense if atoms exist and they're built from smaller particles (protons, neutrons, and electrons). Scientists can split big atoms into smaller ones...
Thomas Edison's (1847–1931) curiosity led him totinkering with light bulbsand to the inventions of the phonograph and motion picture camera. Marie Curie (1867–1934) was a pioneering scientist who was curious about the properties of radioactive materials. She discovered the elements radium and ...
Antibodies are proteins your body makes to fight infection. A biopsy, where your doctor uses a thin needle to take a sample of tissue or fluid for testing. This is used to rule out cancer. A thyroid scan, in which your doctor injects a little radioactive material to create an image of...