Wave theory proposed by de Broglie (1921) suggested that all particles have the characteristics of an electromagnetic wave in addition to their well understood particulate nature.Edward L. AlpenRadiation Biophysics (Second Edition)
Mid-infrared photonics is the practical application of electromagnetic radiation with a wavelength between two and approximately twenty micrometres. This region includes a number of so-called water windows: wavelengths of light that can propagate through the Earth’s atmosphere without being absorbed by...
A bright, ultrashort X-ray pulse is used to transiently create and characterize warm dense copper. As the pulse intensity is increased, the opacity of copper is strongly altered. The recorded X-ray absorption spectra, substantiated by a theoretical electronic structure model, provide insight into ...
Aerothermal heating arises as the hypersonic vehicle pierces through the atmosphere. Fundamentally, the adiabatic dissipation of a vehicle’s kinetic energy into the viscous gas environment is responsible for the extreme thermal conditions of flight17. In the vehicle’s shock layer, (volume gas between...
(DLA) despite an apparent lack of X-ray absorption, rarely seen together in a single system, we present new observations across the electromagnetic spectrum from the radio to high-energy regime and discuss several key open questions: how much variability in each spectral band, how much reddening...
Electrical conductivity during incipient melting in the oceanic low-velocity zone 地幔熔融物有利于构造板块运动 http://www.douban.com/group/topic/54144980/ 11. Fast spin of the young extrasolar planet βPictorisb 太阳系外行星 “β Pictoris b”的旋转速度 http://www.douban.com/group/topic/...
Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy. While it's true that light can damage our eyes under certain circumstances, there's no scientific evidence suggesting that blue light is harmful to our eyes. But many people ...
Reasonable people can disagree about the optimal num- applications to US business schools are down by 11% (compared with bers and types of immigration. But at a time when the nation most needs a 2% drop in domestic applicants). And numbers of international this discussion, its dialogue is ...
Wave nature of sound and electromagnetic radiationWave nature of sound and electromagnetic radiation 收藏 分享 下载 举报 用客户端打开
A model is proposed whereby the observed low-frequency drop-off in pulsar spectra is explained in terms of free-free absorption of emergent radiation by magnetospheric electrons. This model requires a specific frequency dependence of the level of radiation production. Observed spectra of PSR 0809, ...