| 词汇 | 光谱 |
| 释义 | 光谱 The energy of light varies across the spectrum blue light is more energetic than red but only a certain amount of energy is needed to knock an electron free. Different elements or compounds absorb and emit different colors or wavelengths of light, and by studying a star's spectrum, one can divine what its composition might be. Hundreds of Been there readers sent in images this month, which featured every colour in the spectrum. Already from this class if I told you that I gave you energies in some spectrum but they were off by a factor of four, what would you think? Those in between fill in the spectrum with colours such as green. You could break a steam generator tube, you could break an instrument line and you could have a spectrum of pipe breaks in a BWR inside of containment. So we're looking only for the neutrons at energy E from this spectrum. Their work will begin at the Rutherford Appleton Laboratory in Oxford, where the researchers will use lasers and molecular spectroscopy to choose the particles they want to use. We have a yield rate of neutrons, if a fission occurs at energy E this is the spectrum of neutron energies that are produced. Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify. We are looking at other planets and their spectral signatures. The researchers tested their new black material with near- infrared radiation, just beyond the red end of the visible spectrum. Because they can be tuned across the whole spectrum they might provide a safe and environmentally friendly replacement for pigments in paint. With the multiple color changes, the color transformations need to be scripted so that they move through the spectrum in the correct order. The question then arose, would it satisfactorily explain the spectrum of hydrogen? In the spectrum of Liberian politics, Ms Sirleaf is arguably the best president the country has ever had. This would be a two group analysis where you have a thermal and a fast spectrum. Most of this refracted light is in the red part of the spectrum and as a result the moon, seen from Earth, turns a reddish, coppery or orange hue, sometimes even brownish. There is also the problem that the carbon in methane comes in different isotopic forms, and the different forms have subtly different spectra. Kylie Catchpole, a research fellow at the Australian National University in Canberra, says the design is promising because it works over a broad band of the spectrum. He applied it to the problem of the electron in the hydrogen atom and worked out the spectrum of hydrogen. |
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