X Ray SpectraThe problem of whether hard X-rays and microwaves are emitted from the same electrons in common or closely separated sources is reviewed on direct and indirect observational evidence. Detailed analyses of time structure and peak flux suggest that hard X-rays and microwaves are emitted...
common source 美 英 un.共用源 网络共源;共同源极;共源极 英汉 网络释义 un. 1. 共用源
The problem of whether hard X-rays and microwaves are emitted from the same electrons in common or closely separated sources is reviewed on direct and indirect observational evidence. Detailed analyses of time structure and peak flux suggest that hard X-rays and microwaves are emitted from nearly ...
Thunderstorms emit fluxes of gamma rays known as gamma-ray glows1,2, sporadically observed by aircraft1,3,4,5,6,7, balloons8,9,10,11 and from the ground12,13,14,15,16,17,18. Observations report increased gamma-ray emissions by tens of percent up to two orders of magnitude above the...
Multiple lung nodules look like spots or lesions on an X-ray. They usually measure 3 centimeters (roughly 1.2 inches) or less in diameter.10Multiple lung nodules are a common finding, occurring in between 3.9 and 6.6 of every 1,000 chest X-rays in the United States.1 ...
10 Multiple lung nodules are a common finding, occurring in between 3.9 and 6.6 of every 1,000 chest X-rays in the United States.1 Cancer is a concern whenever there are multiple lung nodules seen on a scan. Although lung nodules are more likely to have one of many different benign ...
The macroscopic characteristics of the fragments of pinewood associated with the bone fragments, such as their annular amplitudes and their carbonisation state, as well as microscopic diagnostic elements such as medullary rays and resin channels, all appeared to be the same and almost perfectly ...
To appear in the Astrophysical Journal X-rays in the Orion Nebula Cluster: Constraints on the origins of magnetic activity in pre-main sequence stars A recent observation of the Orion Nebula Cluster with the ACIS instrument on board the Chandra X-ray Observatory detected 1075 sources (Feigelson ...
After introducing Leonardo da Vinci’s (LdV) predecessors in the field of light propagation research, his drawings on the topic of reflecting light by a spherical mirror are analysed. The discovery of LdV is presented, according to which, at an infinitel
X-rays can detect injuries in bone and dense tissue. MRIs can reveal damage to bones, as well as softer tissues like muscles, ligaments, or tendons. Another advantage of an MRI is that it can show inflammation. CT scans provide more accurate detail than an X-ray and may be used to exa...